I recently started receiving the following error from SkyDrive Pro (not to be confused with the Free ‘SkyDrive’) after changing some hardware in my computer. I have Windows 8 Professional 64bit with Office 2013 Professional Plus. This solution will also work for users of Office365

[SkyDrive Pro Critical Error]

SkyDrive Pro needs to close becuase of a hardware or configuration problem.

Error Description: Unspecified error

HRESULT: 0x8004005

AssertTag: 0x00c6d180


After much searching, I found the following to be the solution to the problem.

  1. Close any SkyDrive related processes. Look for SkyDrive and Groove in your process list. Stop them all!
  2. Open a command prompt (Not PowerShell!) and change to the directory where Microsoft Office 2013 is installed.

(type) cd “C:Program FilesMicrosoft OfficeOffice15” (press enter)

(type) groove.exe /clean /all (press enter)

The above command clears all SkyDrive Pro cache and settings, setting it back to default again.  You can now restart SkyDrive services and sync from SharePoint / Office365 again.


  • http://support.microsoft.com/kb/982279

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