Had a strange issue where a client could not open PDF’s from a Web Folder, or an explorer folder view that was actually a website, on Windows XP.   I had tried changing the file associations and everything and nothing seemed to allow the user to open the files via Adobe acrobat.   Come to find out that there is a hotfix from Microsoft for this issue.

Microsoft has released hot fix KB943337 that should resolves the problem for most users with webfolders (also known as webdav) and PDFs. You must request this hot fix as it is not part of their automatic update process.

http://support.microsoft.com/kb/943337

Sources:

http://mydocsonline.blogspot.com/2008/10/problems-opening-pdf-files-using-web.html

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