JSI Tip 7705. You are unable to open MMC Help files (or MSDN library files)?

When you press Help on the toolbar of a MMC snap-in, the Help file does NOT open, and no error message is displayed.

When you attempt to start the MSDN library, you may receive:

Cannot open C:Program FilesMicrosoft Visual StudioMSDN9898VSa1040msdnv6a.col.

These problems will occur if there is a problem with a tag in thehhcolreg.dat file, used by the HTML Help viewer (Hhctrl.ocx).

To fix this problem:

1. Open a CMD.exe prompt.

2. Type notepad "C:Documents and SettingsAll UsersApplication DataMicrosoftHTML Helphhcolreg.dat" and press Enter.

2. Locate the XML tag.

3. Replace the XML tag with .

4. Save the file.

5. Exit Notepad.

6. Exit the CMD prompt.