The problem usually occurs when MS Photo Editor gets uninstalled after upgrading MS Office.

The Symptom: When you open a folder that is configured to show a thumbnail view of .jpg files, you see an outline of the thumbnail and a small program icon rather then the image that should be displayed.

Note: before doing the following steps, make sure you make a backup copy of the registry.

To resolve this issue, use Regedit to re-associate the .jpg file extension in the registry:
1. Click Start, click Run, type regedit in the Open box, and then click OK.
2. Locate and click the HKEY_CLASSES_ROOT\.jpg registry key.
3. Right-click the HKEY_CLASSES_ROOT\.jpg registry key, point to New, and then click Key. Name the new key ShellEx.
4. Right-click the ShellEx registry key that you created, point to New, and then click Key. Name the new key {BB2E617C-0920-11d1-9A0B-00C04FC2D6C1}.
5. Click the {BB2E617C-0920-11d1-9A0B-00C04FC2D6C1} registry key that you created, right-click the Default value in the right pane, click Modify, and then type the following value data in the Value data box: {7376D660-C583-11d0-A3A5-00C04FD706EC}

Reboot…That’s it…

Dog not included!

Regards,
Jared Blake