Cannot uninstall Powerchute 2.1.1

[mrvv_apc]

This was originally posted on APC forums on 12/12/2013

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Windows Server 2008 R2

Powerchute 2.1.1 will not uninstall. In Programs and Features, Powerchute reports "this item may already have been uninstalled. Do you want to remove the Program entry"

System restore is not a viable option on this production server.

Manual removal instructions would be appreciated so that I can upgrade to pcns310win-x86-64

[BillP]

This reply was originally posted by Bill on APC forums on 12/12/2013

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Hi,

Sorry but PCNS 2.1.1 was discontinued more than 10 years ago so there is no documentation available for it. I suggest searching in the registry for APC, PCNS, PowerChute Network Shutdown and remove those entries. You should back the registry up first just in case you accidental remove something that causes a system issue. You can find instruction on how to back up the registry at   Back up the registry - Microsoft Windows Help

Here is a list of registry entries PowerChute Network Shutdown (PCNS 3.x) creates. HKLM below stands for HKEY_LOCAL_MACHINE.

32-bit Registry Keys

Base Key: HKLM\Software\APC\PowerChuteNetworkShutdown\

Version: REG_SZ 3.0.0

ImagePath: REG_SZ

64-bit Registry Keys

Base Key: HKLM\Software\Wow6432Node\APC\PowerChuteNetworkShutdown\

Version: REG_SZ 3.0.0

ImagePath: REG_SZ

32-bit Service Registry Keys

Base Key: HKLM\SYSTEM\CurrentControlSet\Services\PCNS1

Description: REG_SZ Reliable network based shutdown of multiple servers.

DisplayName: REG_SZ PowerChute Network Shutdown

ErrorControl: REG_DWORD 0x00000001

ImagePath: REG_EXPAND_SZ \group1\pcns.exe

ObjectName: REG_SZ LocalSystem

Start: REG_DWORD 0x00000002 (2)

Type: REG_DWORD 0x00000110 (272)

64-bit Service Registry Keys

Base Key: HKLM\SYSTEM\CurrentControlSet\Services\PCNS1 WOW64 REG_DWORD 0x00000001 (1)

32-bit Uninstall Registry Keys

Base Key: HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\PowerChute Network Shutdown

DisplayIcon: REG_SZ /group1/pwrchute.ico

DisplayName: REG_SZ PowerChute Network Shutdown

DisplayVersion: REG_SZ 3.0.0

Publisher: REG_SZ APC by Schneider Electric

UninstallString: REG_EXPAND_SZ /uninst~1.exe

URLInfoAbout: REG_SZ http://www.apc.com/support/

64-bit Uninstall Registry Keys

Base Key: HKLM\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Uninstall\PowerChute Network Shutdown

DisplayIcon: REG_SZ /group1/pwrchute.ico

DisplayName: REG_SZ PowerChute Network Shutdown

DisplayVersion: REG_SZ 3.0.0

Publisher: REG_SZ APC by Schneider Electric

UninstallString: REG_EXPAND_SZ /uninst~1.exe

[mrvv_apc · Accepted solution]

This was originally posted on APC forums on 12/13/2013

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Removed all registry entries as suggested.

Installed pcns3.1
Uninstalled pcns3.1 (required to remove the legacy PowerChute service)

Re-installed pcns3.1

Resolved. All systems working.

Many thanks