Thumbnail previews not displayed in Windows Explorer

Posted on October 18, 2012

I recently ran into an issue with picture thumbnails not working; a preview of the picture would not display, only the picture icon would be shown.

This solution worked for me.

To enable the thumbnail view:

  1. Open My Computer
  2. Press the ALT button on your keyboard
  3. Select the Tools menu
  4. Select Folder Options
  5. Click the View tab.
  6. At the top, if it’s checked off, uncheck the following option: Always show icons, never thumbnails
  7. Click Apply
  8. Click OK

Your thumbnails should now be displayed.

Windows backed up failed with following error code ‘2155348129’ – Hyper-V VSS Writer – [5] Waiting For Completion – Unexpected Error

Posted on October 15, 2012

We've run into several instances where this error presents itself on Windows 2008R2 servers running Hyper-V. When you see this error in the event log around the time your backup fails, it will look similar to:

Event ID: 521
The backup operation that started at '‎2012‎-‎10‎-‎15T01:44:31.444000000Z' has failed because the Volume Shadow Copy Service operation to create a shadow copy of the volumes being backed up failed with following error code '2155348129'. Please review the event details for a solution, and then rerun the backup operation once the issue is resolved.

There are numerous issues that will cause this error. The most interesting was relating to virtual machine drive-space. In our case, we found a few virtual machines with little or no free drive space were the cause.

First determine if the issue is related to the Hyper-V Writer:

1) Load a command prompt
2) vssadmin list writers

look for the:

Writer name: 'Microsoft Hyper-V VSS Writer'
Writer Id: {66841cd4-6ded-4f4b-8f17-fd23f8ddc3de}
Writer Instance Id: {c73cdd59-f1d2-40be-b1b4-0c11449528a3}
State: [1] Stable
Last error: Unexpected Error

** Definitely related to the Hyper-V VSS writer ***

3) net stop vmms 
4) net start vmms
5) Check that the "last error:" has cleared itself:

vssadmin list writers

look for the:

Writer name: 'Microsoft Hyper-V VSS Writer'
Writer Id: {66841cd4-6ded-4f4b-8f17-fd23f8ddc3de}
Writer Instance Id: {c73cdd59-f1d2-40be-b1b4-0c11449528a3}
State: [1] Stable
Last error: No Error

6) Ensure you have at least 15% free diskspace on all Hyper-V Virtual Machines drives. 
7) Re-run your backup and monitor

If it repeats itself, I suggest looking at alternative solutions found online including resetting folder permissions.