If you encounter the MSDN help error message "No topics could be located that were relevant to the F1 request.", try the following steps:
1. Repair the MSDN Library using the installation disc.
2. If that doesn't solve the problem, repair the installation of Microsoft Document Explorer 2005. Navigate to:
- Start Menu → Control Panel → Programs and Features
- Click on Microsoft Document Explorer 2005
- Click Uninstall/Change and select the Repair option.
3. Otherwise check whether the following entries are in the registry:
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\VisualStudio\8.0\Help\x0409\{E589AA14-E52E-4f7c-88CF-E4E3C1260EEE}]
"(Default)"="MSDN Library for Visual Studio 2005"
"Filename"="ms-help://MS.MSDNQTR.V80.en"
"VS_Docs"="8.0"If these entries are missing, then you have a problem with the MSDN Library installation.