Windows Installer error 1327: Invalid drive letter

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When you receive Error 1327: Invalid drive X: (where X: is you drive letter), try the following:

1. Click Start, and then click Run.

2. In the Open box, type regedit, and then click OK.

3. In Registry Editor, locate the following registry key:

  • HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders

4. In the right pane, note the values in the Data field of each entry. If any value contains a drive that is not correct for your computer, right-click the entry, type c:\my documents in the Value data box, and then click OK.

5. Repeat step 4 for each entry whose Data value contains an incorrect drive.

6. Repeat steps 3 through 5 for each of the following registry keys:

  • HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\User Shell Folders
  • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion
  • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders
  • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\User Shell Folders

7. Close Registry Editor. You should now be able to start the BOINC installer and run it without problems.

Original writer Original FAQ Date
Jorden 507 17-12-2009