Issue
Webpages were able to be viewed from controllers in the past but no longer work. The controller can be pinged which indicates that it is online.
Product Line
Andover Continuum
Environment
- B4920
- BCX
- 99xx
- Windows OS
Cause
If running the latest versions of Microsoft Office, there are a lot of extensions installed in the registry under accepted documents which create a very long string for a HTTP request.
Resolution
In a test environment, Microsoft Office suite 2007 was installed for testing. Webpages could be opened from the bcx and 9702 controllers but not from the b4920 or webpages on a 9900. The latest Microsoft Office packages added a few accepted document extensions that allow things like word docs and spreadsheets to be opened in Internet Explorer. If the extensions are removed, the docs and xls files can still be downloaded and can be opened locally instead of through the browser. The TCP streams below show the different http request.
Request with latest extensions:
GET / HTTP/1.1 Accept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/x-shockwave-flash,
application/vnd.ms-excel, application/vnd.ms-powerpoint, application/msword, application/xaml+xml,
application/vnd.ms-xpsdocument, application/x-ms-xbap, application/x-ms-application, */*
Request with default extension:
GET / HTTP/1.1 Accept: */*
If running the latest versions of Microsoft Office, there are a lot of extensions installed in the registry under accepted documents which creates a very long string for a HTTP request. In order to work around this, you can edit the registry. Editing of the registry should be done with extreme caution. Be sure to export a copy of your registry.
- Look under the registry key
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Accepted Documents - Then you can export all of the keys under the above location and delete all but the default key.
- Once this has been done, restart your browser and you should be able to open your controller's webpages.
