Workaround for VirtualBox 4.0.8 regression bug

The current version of Oracle’s VirtualBox (4.0.8) has Version 4.0.8 had a regression bug which seems to only manifest itself when using Debian based hosts with 64-bit and Windows 7 64-bit guest system.

Here is the summary of the workaround posted as VirtualBox Ticket 8948:

  1. Edit the settings file to allow the VM to start again (Replace control characters in line 315 with 4.0.8).

  2. Start the Windows guest

  3. Run regedit

  4. Go to HKLM\SOFTWARE\Oracle\VirtualBox Guest Additions

  5. Create a string key VersionEx (use exactly this spelling)

  6. Give it a reasonable value (ie 4.0.8)

  7. Shut down the VM.

  8. Repeat step 1

  9. Restart and shutdown windows guest again

That’s it.

Edit: This bug has been fixed in version 4.0.10 (released 2011-06-27).

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