Unspecified Error with MSDN Library for VS2008 in IE7
My MSDN for VS2008 started suddenly to raise this error.

and I had no idea why. This occurred on my home machine which is XP Pro with latest upgrades.
I tried following steps:
- I uninstalled and reinstalled entire MSDN Library for VS2008
- I tried to repair IE (basically by reinstalling IE7)
- I even deleted everything from C:\Program Files\Common Files\Microsoft Shared\Help and C:\Program Files\Common Files\Microsoft Shared\Help9 and then un/reinstalled help
Nothing helped.
But I got help on a private discussion list, to try to delete all Temporary Internet Files. And doh! It started to work again...
Trying to clear all the IE temp file content didn't cross my mind although I've seen weird issues related to it before this. For example hyperlinks sometimes link in totally weird way when IE has "enough" those temporary files, frames might open inside themselves (repeating the opened content) or nothing just happens. Clearing temporary files solves that with no exception.