Important This section, method, or task contains steps that tell you how to modify the registry. However, serious problems might occur if you modify the registry incorrectly. Therefore, make sure that you follow these steps carefully. For added protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs.
To resolve this issue, use Regedit to 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}