Building Automation Knowledge Base

Issue IP address using DHCP Product Line EcoStruxure Building Operation Environment IP network Cause Bacnet or Modbus IP loses communication Resolution The AS or ES may be configured using DHCP (Dynamic Host Configuration Protocol), this is usually set up using "Device Manager" See Troubleshooting AS configuration issues with IP address. However many other systems use fixed IP address and use the IP address to specify the controller or server. Thus it is usually best to use fixed IP addresses for the Automation Server and Enterprise Server, especially if using Bacnet or Modbus over IP NOTE When the IP address of an AS is manually changed, the IP address of the Bacnet or Modbus IP interface needs also to be manually changed

Issue Remove the Routing tables from I/NET and Xenta 527 devices Host conflict or station conflict error messages displayed at the I/NET Host. Incorrect Links, Hosts and IP addresses that do not exist in your Network are shown when penetrating Network Configuration. Product Line Other, TAC INET, TAC Vista Environment I/NET IP Routers Xenta 527 Cause Host or station conflict errors can be caused by old information stored in a routing table. From time to time, it may be necessary to purge that information and allow the tables to be rebuilt automatically. The only way that routing tables can become corrupted is if a laptop was used to connect to the system from a different Network or from the Outside. Once connected, its IP table is broadcasted to the other devices like PCs and NPRs, thus populating the table with entries that does not belong or is non-existent for this location or system.  Resolution Managing I/NET Routing Tables   I/NET Host Workstation View the I/NET Routing Table See Viewing the routing tables on a PC using I/NET Seven for complete instructions. Delete a Single entry in the I/NET Routing Table Go to Start > Run Type Telnet and hit Enter Type open, hit the space bar, then enter the IP address of the PC Press Enter When the login comes up, type csi, hit enter Type LA  and hit enter to list all routing table entries Type ipdel xxx.xxx.xxx.xxx with xxx.xxx.xxx.xxx being the IP address of the device you wish to delete Press enter Clearing the I/NET Routing Table Shutdown the I/O Server Open Windows Explorer Browse to C:\INET Seven Data (or C:\Program Files\INET Seven) Delete the .dat files (you may want to save a backup to another location) Delete the routing table from any device listed as a Reference Host or the table will repopulate Start I/NET Other Method: See Bogus Links, Hosts and IP's in Netcon for instructions on using the delall command in Telnet     Xenta 527-NPR; Xenta 913; Xenta 527 Web Server (See Clear the IP routing tables of a Xenta 913)  Viewing the I/NET Routing Table View Connecting a serial cable to a Xenta 5/7/9xx controller to configure HyperTerminal to communicate to the Xenta Device. Log into the Xenta Device as the root user At the dsh/> type “inet ip” Press enter Deleting a Single entry in the I/NET Routing Table View Connecting a serial cable to a Xenta 5/7/9xx controller to configure HyperTerminal to communicate to the Xenta Device. Log into the Xenta Device as the root user At the dsh/> type “inet ipdel” then the IP address of the device you wish to delete Press enter Clearing the I/NET Routing Table View Connecting a serial cable to a Xenta 5/7/9xx controller to configure HyperTerminal to communicate to the Xenta Device. Log into the Xenta Device as the root user At the dsh/> type “inet delall” Press enter Type “inethost” and press enter Verify or set the Reference Hosts Clear the routing table from any referenced device to ensure old data is not repopulated Restart the Controller to re-populate the routing table   You can also realize this through the web page of Xenta device. Open the web page of Xenta controller, browse to Utilities-I/NET-I/NET Command Line, and type the command below or above. The result is the same as using HyperTerminal, which is also an easier way. Typing “inet help” or “inet” gives every I/NET option within the controller inet - I/NET Help ip - Display IP table list ls - Display Link/Station table list cp - Display Compressed table list gp - Display Global Point table list mm - Message masking all - Display all lists ipadd - Add an IP address to the tables ipdel - Delete a single ip record delall - Delete all ip records   NPR-2000 Viewing the I/NET Routing Table Go to Start>Run then type “Telnet” and hit Enter Type open hit the space bar then enter the IP address of the NPR Press Enter When the login comes up, type csi hit enter Type “LA”  and hit enter to list all routing table entries Deleting a Single entry in the I/NET Routing Table Go to Start>Run then type “Telnet” and hit Enter Type open hit the space bar then enter the IP address of the NPR Press Enter When the login comes up, type csi hit enter Type “LA”  and hit enter to list all routing table entries Type “ipdel xxx.xxx.xxx.xxx” with xxx.xxx.xxx.xxx being the IP address of the device you wish to delete Press enter Clearing the I/NET Routing Table (See Bogus Links, Hosts and IP's in Netcon)  Go to Start>Run then type “Telnet” and hit Enter Type open hit the space bar then enter the IP address of the PC Press Enter When the login comes up, type csi hit enter Type “LA”  and hit enter to list all routing table entries Type “delall” and hit enter to clear the table   Appendix A: I/NET Telnet Commands Glossary: Help – Displays all available commands in the NPR or I/O Server.  Note there are some differences between the NPR and I/O Server. ipadd a.b.c.d – Adds the IP to the routing tables. ipdel a.b.c.d – Deletes the IP from the routing tables. gpadd LLSSPPBBTT XX | a.b.c.d – Adds a global point link or global point IP to the routing tables. delall – Deletes “all” local routing table entries. setpass password – Change the telnet login password (6 characters max). +cpdel LLLL SS – Deletes the specified link/site address from the CP table. +debug gp on|off – Turns global point debugging on or off. +reboot – Reboots the NPR. +wdog – Reports watchdog errors. +wdogrst – Clears the watchdog errors. +Dx – Toggle debug output to COM3.  x=0/1; 0 = off, 1=on.   List Commands: +LR – IP Stack routing table. LI – IP routing table. LM – IP routing masks. LL – Link/Station routing table. LG – Global point routing table. +LC – Compressed routing table. +LS # - Compressed routing table: station to site maps for the specified link #. LA – All routing tables. LU – System metrics. *LD – Dial maps.  + = NPR only * = Host PC only   Appendix B: Method for Clearing Routing Tables at a Large Site See Possible solution to doing a Telnet session with a system wide firewall setup.   Appendix C: Suggested Reference Host Settings   Click here to be linked to the TAC INET Seven Getting Started. Click here to be linked to the TAC INET Seven Operator Guide.   A Reference Host is any TAC I/NET workstation, NPR, or Xenta 527/527-NPR that will serve as a source of IP addresses. Any of these devices attached to an Ethernet LAN can be used as a Reference Host. Each time I/O Server is started on a workstation, it provides the workstation’s IP address to each remote host designated as a Reference Host. I/O Server also requests and receives a list of all host IP addresses that are known to the remote host at that time. I/O Server must be running on the remote host for this address exchange to occur. I/O Server compiles and maintains a list of all the remote hosts that it learns about. Ultimately, all hosts in the network will know the IP addresses of all the other hosts. Ideally, you should determine 1 or at most 2 devices to serve as your Reference Host.  This device would ideally be a Xenta Server or an NPR, but a Host workstation that has I/O Server running 100% of the time will work as well.  All devices on the system will use this as a single Reference Host. No others are needed.  When the device comes online it will contact the Reference Host and get the site’s Routing Table.  The Reference Host can have an empty routing table.  Once the Routing Table is shared, Reference Hosts are no longer needed.  You can leave the single entry in place. This will allow a quick recover, in the event of a critical system failure. Here are a few reasons for using multiple Reference Hosts: Temporarily add a new device as a Reference Host on the Sites Reference Host or a workstation to aid in bringing it online A large site may desire to have 2 Reference Hosts in case one is offline when a device comes online. An I/NET site that spans multiple locations may wish to declare a local Reference Host for each building and a network Reference Host  

Issue The MVB actuator is no longer available from Schneider Electric Replacing a Controlli S300 Actuator Product Line Field Devices Environment VMB valves MVB actuators S300 actuator Cause Only the actuator requires replacing but the MVB is no longer available from Schneider Electric. Resolution Note: The MVB actuators are still manufactured by Controlli, but not distributed by Schneider Electric. Use the AG52 valve linkage kit 880-0129-000. For the Controlli MVB22, MVB26 and MVB28 or S300 replace with the MV15B-230 actuator For the Controlli MVB46 replace with the MV15B-24 actuator For the Controlli MVB32, MVB52 and MVB56 replace with the M800 880-0310-030 actuator If a D36 auxiliary switch was fitted in the  the MVB actuator or if the auxiliary switch was used in the S300 actuator then the following auxiliary switch packs can be used: M800, use the 880-0104-000 kit or order the M800-S2 880-0311-030 actuator which includes 2 auxiliary switches. MV15B-24/230, use the 880-0469-000 kit. Note: if the valve also requires replacing see VSB, VSB..F, VMB, VMB..F Schneider Electric replacement valves.

Issue How to get the XIF file of Xenta free programmable controllers? Product Line TAC Vista Environment Xenta Free programmable controllers (Xenta 281, Xenta 282, Xenta 283, Xenta 301, Xenta 302,  Xenta 301C, Xenta 302C, Xenta 401, Xenta 401B, Xenta 401C) TAC Menta editor Cause If Xenta free programmable controllers need to play as a third party device in another system, a XIF file is needed. Resolution Open the preprogrammed Menta file in the Menta Editor.  Note: If you are opening the file directly from the Vista database, it will first need to be saved to the local harddrive before generating an XIF. Go to Options > Simulate (or press F12) Go to Commands > Generate An XIF file with the same name as the .MTA file will be generated in the same location on the harddrive as the. MTA.   Alternatively, if you are connected live to the controller, you can also generate an XIF by connecting live: Open the preprogrammed Menta file in the Menta Editor. Connect the Xenta free programmable controller to the computer with a RS232 to USB cable. For details please refer to Downloading a Xenta Device Using Direct Connection to Menta Programming Tool. Go to Options->Simulate (F12), and select connect. A XIF file will automatically generated under the same folder that the Menta file is saved. NOTE: in order for third party system to be able to view points in Menta, those points need to be set as SNVTs.

Issue TC3XX thermostat is off when power is restored after a power loss Product Line Field Devices Environment TC300 TC303 TC353 Cause The default operation mode when the TC3xx thermostat is powered up is in OFF mode. Resolution An internal system setting (parameter 03) allows the possibility to alter the behaviour of the thermostat upon power restoration. 00 = Restores with previous status  01 = Restores with power off.  (this is the factory default setting) 02 = Restores with power on. Once power is restored, the thermostat will remember all parameters (** with the exception of the TC303-3A2DPMS and TC303-3AADPMS) that were in place before the power failure. The following specification numbers allow the thermostat’s restored state to be configured: - TC303-3A2L TC303-3A4L TC303-3A2DLS * TC353-3A2DLS TC303-3A4 * TC353-3A2L TC303-3A2DLMS * TC353-3A4DLS TC303-3A2LM * TC353-3A4L TC303-3A4DLMS ** TC303-3A2DPMS       ** TC303-3A4DPMS For guidance and instruction on how to perform the adjustment of internal system parameters, please contact your local/regional support team. * The TC353-3A2L, TC353-3A4L, TC353-3A2DLS and TC353-3A4DLS have been discontinued. Refer to PA-00686 - Product ObsolescenceNoticefor EMEA and APAC for further details. ** The TC303-3A2DPMS and TC303-3A4DPMS temperature set point will revert back to the default value after power is restored. This is as per designed. Please note: internal system parameters MUST ONLY be changed by a trained Schneider Electric or an approved Partner technician.Incorrect setting of such internal system parameters may result in either undesired operation of the thermostat or irreversible damage.

Issue Tam32 error message appears when Editing a Function Block program. When editing the program, this error appears and elements are removed from the program. Product Line EcoStruxure Building Operation Environment Function Block/Menta Editor Found when files created in an older version are used in a newer version of StruxureWare Building Operation. Cause This error message is literal. The line indicated as an error is a corrupted part of the function block program. You can determine this line by editing the file in a text editor such as Notepad++ and viewing the indicated line. NOTE: These programs will continue to work as originally programmed. Resolution To identify the part of the program causing the error: Edit the Program that is in error When the message appears, note the line number and file before you press ok. Do not edit or attempt to save the program. Locate the file specified in the error message. In this case tempaut1 The AppData folder is usually hidden, so you will need to manually type the file path into Windows Explorer Edit the file with notepad++ or another text editor Find the indicated line and determine what type of object is in error. In this example, the line indicated in the error was 116. It is a comment. Method 1: Compare the error line to another other line of the same type in the document and correct any abnormalities. In this case, I removed an extra comma. If it is a Comment, note that @ = carriage return and should be left in, but remove any other symbols or uncommon characters from the comment. You may just want to replace all of the comment text between the : and } with filler text. DO NOT delete the line of code. Save the edited file to the desktop, be sure not to save it as a .txt If needed, right click>edit the program from the system tree and click OK when the error appears. Select File>Import Import the edited file saved on the desktop. Check to see if the changes you made have corrected the application and Save. Method 2: May be used if the build the file was created in is significantly different than the current build. Edit the program Copy the indicated tempaut file to the desktop Install the version of SmartStruxure which the function block was created on or locate a PC at an older revision Import the files to an AS or ES at the original build Edit the program Remove the objects in error. Export the edited files and re-import in the current build Add back any removed elements that are required for the program to function.

Issue TRD-IO-16 and TRD-IO-34 Installation (Wiring) & Configuration Guides Environment Niagara G3 Cause Quick access Resolution These guides are also available at http://www.niagara-central.com. TRD-T-IO-16 TRD-T-IO-34

Issue All efforts to move a Continuum Virtual License from one host machine to another are unsuccessful. Product Line Andover Continuum Environment Continuum Cyberstation Cause The license type is not shown as Re-hostable in the Sentinal Admin Control Center webpage.   The license type is not shown as re-hostable after applying the Re-hosting upgrade activation file received from Andover Upgrade Services.   The error Invalid Recipient information, process canceled! is displayed when entering the recipient id file (.id) in the RUS Key Utility.   The HaspRuntimeForContinuum.exe is the wrong version. Resolution Contact Andover Upgrade Services and provide them with a new host information file (.c2v) produced using the RUS Key Utility. On the host from which the license is to be transferred... HaspRuntimeforContinuum.exe is the most current version available on Exchange. Rus Key Utility is the latest version available on Exchange. Contact Product Support Services for assistance. On the host the license will be transferred to... The most current version of HaspRuntimeForContinuum.exe must to be installed prior to using the RUS Key Utility to generate the recipient fingerprint file (.id). The HaspRuntimeforContinuum must be installed As Administrator. On the host licensed host… HaspRuntimeforContinuum.exe is the most current version available on Schneider Electric Exchange.   A demonstration of the rehosting process can be viewed here.

Issue A dialog of "Cannot open .NET editor with .NET Framework" comes up with new installation of Webclient or after a Microsoft update of .NET 4.5.x. There was an error trying to create the .NET control for this page. Product Line Andover Continuum Environment Continuum Webclient Windows 7 Windows Server 2008 Windows 10 Internet Explorer Cause Microsoft changed the behavior of Internet Explorer when .net 4.5.x is installed on a PC. It turns off .net 2.0 support which is needed for several editors to function on Webclient browser PCs Resolution See web.Client v2.0 .Net Editor Hotfix on the EcoXpert Extranet This is a registry key file that installs the registry keys mentioned further down in this article. It allows Internet Explorer to utilize .net 2.0 that several webclient editors use. This hotfix contains a .reg file which changes the registry, it is recommended to make a Windows Restore point or a backup (export) of the existing registry folder (hive). The hotfix only updates the following keys, so the changes can also easily be made manually. On an 32-bit (x86) Operating System Add a DWORD attribute with the name EnableIEHosting to KEY_LOCAL_MACHINE\SOFTWARE\Microsoft\.NETFramework Set the value to 1 On an 64-bit Operating System Add a DWORD attribute with the name EnableIEHosting to KEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\.NETFramework Set the value to 1 A reboot of the webclient browser PC is required after the change is made. Each browser PC will need to have this fix applied. Microsoft Edge can also be used on newer client PCs, see the following article: Microsoft Edge can be used for webclient client PCs   

Issue If there is a " in any of the Xenta OP screens, the application will not compile/download correctly. Error message states "ERROR c":\program files\tac\tac menta 4.2.3\temp\opdoc.gop Error in line: xx " Environment Xenta programmable controllers Menta Xenta OP Tree (.dop) Cause The character " is not allowed in the Xenta OP. Resolution Do not use the character " in the Xenta OP tree.

Issue Unable to change set point from the thermostat when adjusting the value from a BAS Product Line EcoStruxure Building Expert Environment Smart Struxure Lite Cause Misconfiguration of the object and BACnet priority level Resolution 1)     When discovering the object from the BMS, it will integrate as; type: numeric point | Property ID: Present value | Name: Occupied cool Setpoint as an example. The variable will be for reading only the actual value set.   2)     To change values from the BMS and thermostat, the object shall be configured as follow: ·        Type: numeric WRITEABLE ·        Enabled: True ·        Property ID: RELINQUISH DEFAULT   From the thermostat, If the value is highlighted in RED by going to set point page 1/2, the object is misconfigured repeat step 2  

Issue Are any of the Schneider Electric access software products FIPS compliant? Environment FIPS compliant access control Cause New U.S. Government access control regulations. Resolution FIPS Compliance information The Federal Information Processing Standard 140-1 (FIPS 140-1) and its successor FIPS 140-2 are United States Government standards that provide a benchmark for implementing cryptographic software. They specify best practices for implementing crypto algorithms, handling key material and data buffers, and working with the operating system. Both IPSec and the Encrypting Files System (EFS) in Windows 2000, Windows Server 2003 and Windows XP use the FIPS-140-1 evaluated Kernel Mode Cryptographic Module to encrypt the traffic packet data and file contents respectively if configured appropriately with the selections of FIPS compliant algorithms. The FIPS-compliant, kernel-mode, crypto module lets organizations deploy FIPS 140-1-compliant, Internet Protocol Security (IPSec) implementations using: L2TP (Layer Two Tunneling Protocol)/IPSec VPN client and server. L2TP/IPSec tunnels for gateway-to-gateway VPN connections. IPSec tunnels for gateway-to-gateway VPN connections. IPSec-encrypted, end-to-end, network traffic between client and server, and server to server. Currently, I/NET Seven is not FIPS Compliant. There are not any plans to make I/NET Seven FIPS Compliant. The Continuum product line is FIPS Compliant. Click here for a PDF with more information. FIPS 140-2 Validation Certificate http://csrc.nist.gov/groups/STM/cmvp/documents/140-1/140crt/140crt1355.pdf Schneider Electric Continuum Network Security Module http://csrc.nist.gov/groups/STM/cmvp/documents/140-1/140sp/140sp1355.pdf

Issue How do I run Continuum Analyzer and get a report Product Line Andover Continuum Environment Continuum 1.7 onwards Cause The Continuum Analyzer is designed to provide installers and troubleshooters with a point of reference for discovering problem areas within their installations.  The software is proactive in that it enables you to 'clean' orphaned and mismatched objects from the database, thereby recovering from a minimal amount of database corruption.  Continuum Analyzer also performs a system information check and provides full reporting on all aspects of the installation, as well as alerts regarding deficiencies. Resolution Always ensure the site database backed up before Continuum Analyzer is used to "Clean" the database. Go to - Start - All Programs - Continuum - Continuum Analyzer Type in User Name and Password (usually andover97 and (not disclosed due to public access)) for the Continuum DB or you can use the system admin user name and password. Click on the version "System Tests", then "Run Wizards" There should be zero failed. Then "Generate Report". To save click on top left disk icon and save as .html file If there are any failures, then ensure the database has been saved before a "Clean" is performed There was a bug in some Analyzer versions that caused a ghost alarm on the AlarmInfo test, also see Continuum Analyzer Failure for Continuum 1.92 & 1.93

Issue A UNC was upgraded from version 431 to 5xx and polled GCM objects update more slowly.  What settings can be reviewed to ensure they are set at recommended values? Environment Niagara R2 UNC-520 (all revisions) Cause The older revision of the UNC and the age of the installation could play a role in the station settings, for the GCMCommService, not being set at recommended values. Resolution Appendix B of the Niagara Network 8000 Serial Driver Engineering Guide (F-27070) reviews the recommended settings of the GCMCommService.  Below is Figure 48 illustrating the General - Config tab of the GCMCommService properties with the required changes from Technical Bulletin 03_03:     Below is Figure 52 illustrating the Poll - Config tab of the GCM object.  Use a cycleTime of 0 ms to synchronize the GCM's Poll Cycle with that of the GCMCommService.  It is best to use the same cycleTimes for both the GCMCommService and the GCM object itself.

Issue If a Xenta I/O module has experienced a hardware failure it may be necessary to replace it with a new controller. Product Line TAC Vista Environment Xenta I/O Modules Xenta 411, 421, 422, 422A, 452, 452A, 471, 491 Cause Hardware failure of a Xenta I/O module requires it to be replaced. Resolution Physically replace the I/O module The next steps depend on whether the I/O module is part of an LNS system or a Vista Classic Network. LNS System Right click on the I/O module in the LNS management tool (LonMaker or NL220) Select Replace Service pin or manually enter the new neuron ID Open Vista System Plug-in Update the TAC Network Update the Vista database Download the base programmable controller Vista Classic Network Go to How to set the neuron ID of an I/O Module in a Vista classic network for instructions on setting the neuron ID for the new I/O module. Service pin or manually enter the new neuron ID Download the base programmable controller

Issue Basic information about configuring Continuum for physical access control. Environment CyberStation CX9900 CX9702 CX9680 ACX5720 ACX5740 ACX781 AC1 AC1 Plus Cause Learn the basics and get started with Continuum access control hardware/software. Resolution See the Access Control Essential Guide PDF: Andover Continuum CyberStation v1.93 Access Control Essentials Guide Andover Continuum CyberStation v1.94 Access Control Essentials Guide Andover Continuum CyberStation v2.01 Access Control Essentials Guide

Issue Customers question the time sync function in AS-P for BACnet devices Environment SE8650, Viconic, SBO, AS-P, SmartStruxure, Room Controller, MSTP, 3rd Party BACnet Devices Cause It is important to understand what happens when AS-P or Room Controller lose power. Resolution SE8650 firmware version 1.7.1-56d and SBO 1.9.3.24 were used in the test. The testing was done with the fieldbus speed at both 38400 and 76800 baud. 1. The first test was to confirm AS-P sends out time sync signal 38 minutes after each hour periodically. A review of all the timeSync data packets during the capture reveals that the time sync packets are sent every hour when the time in AS-P is 38 after the hour minutes mark. 2. The second test was to confirm that the AS-P will send out a timeSync data packet if a device comes back online after a power outage. First the time was synchronized between the SE8650 with AS-P. SE8650 was then powered down and the AS-P server time changed so that the times in the two devices would not match.   A review of the time synchronization packets in the packet capture confirms that the AS sends out a time synchronization once the SE8650 is powered and boots up. 3. If the AS-P and SE8650 both lost power the SE8650 will boot up before the AS-P. The AS-P will then sends out a timeSync once the BACnet communication is settled.

Issue Replacing a CSC2701 compensator with a CSC5252. Environment CSC 2701 5252 compensator Cause The CSC2701 compensator has been superseded by the CSC5252. Resolution The conversion is normally fairly straight forward, but can be more complicated if an SVT is used to provide a boost signal. . Please note that the link between terminals 34 and 35 is only fitted where a 24 volt actuator is used. In the chart above the old and the new terminal numbers are shown. If the old controller was connected to an SVT, which provided a boost facility, terminals 1, 4 and 5 were used to achieve this. With the new CSC, this facility is achieved using the "Setup" function. This is achieved by linking SVT terminals 4/5 to 7/8 on the CSC, having first removed the link. To review the CSC2701 data sheet, please click HERE. To review the CSC5252/5352 data sheet, please click HERE. Please be aware: since July 2016 the CSC compensator and other descrete controllers were withdrawn from service. To see "PA-00479 - Discrete Controllers - Notice of Withdrawal - Satchwell" click here.

Issue Unable to log into the Controllers web page. How do I reset the Password on  a ACX5740 from the Continuum front end? Environment Continuum  1.8X Continuum 1.9X ACx57XX Cause Password Unknown Resolution Open Continuum Explorer Expand the Network Select the ACX 57XX Select the Controller User folder Edit the ACC user and reset the password. 

Issue At start up, anything requiring the SOAP Service to function will fail to work properly. Logging in to Web Client fails with a "No License found for SOAP Interface" message. The Data Sync Service will generate incorrect username or password error messages. Product Line EcoStruxure Security Expert Environment Security Expert SX-SOAP SX-DB-SYNC Cause The SOAP Service fails to start up properly after a Windows restart under certain conditions. Resolution 1. Set the Security Expert Data and (if installed) the Security Expert Data Sync Services to Automatic (Delayed Start). 2. Restart the PC.