Information Rights Management trial service for Office is disrupted by certification error

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Follow these steps, and then exit Registry Editor:

1. Click Start, click Run, type regedit, and then click OK.
2. Locate and then click the following registry key, depending on the version of Office.
   
   For Office 2003:
   
   

   HKEY_LOCAL_MACHINE\Software\Microsoft\Office\11.0\Common\DRM
   For 2007 Office system:
   
   
   

   HKEY_LOCAL_MACHINE\Software\Microsoft\Office\12.0\Common\DRM
   For Office 2010:
   
   

   HKEY_LOCAL_MACHINE\Software\Microsoft\Office\14.0\Common\DRM
   For 32-bit editions of Office 2010 running on 64-bit versions of Windows:
   
   

   HKEY_LOCAL_MACHINE\Software\Wow6432Node\Microsoft\Office\14.0\Common\DRM
3. On the Edit menu, point to New, and then click String value.
4. Type CloudCertificationServer, and then press ENTER.
5. On the Edit menu, click Modify.
6. Type https://certification.drm.microsoft.com/certification, and then click OK.