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. For more information about how to back up and restore the registry, click the following article number to view the article in the Microsoft Knowledge Base:
322756 How to back up and restore the registry in Windows
This problem occurs when there is an incorrect entry in the registry that is used by the Disk Cleanup utility to locate compressed files. To work around this problem, follow these steps:
Click Start, and then click Run.
Type regedit in the Start Search box, and then press ENTER.
On the File menu, click Export, click Desktop, type VolumeCaches in the File name box, and then click Save.
Note This step creates a backup of the VolumeCaches registry key. If you experience any problems after you complete the steps that are listed in this procedure, you can use this backup to restore the VolumeCaches key to its original state. To restore the key, double-click the VolumeCaches.reg file on your desktop, and then click Yes.