Remove compress old files from reg

1. Click on Start > Run > Regedit (or Regedt32.exe)
2. Backup your current registry. To do this, click on File > Export and enter a name.
3. After you have backed up your registry, drill down as follows:HKey Local Machine > Software > Microsoft > Windows > Current Version > Explorer > Volume Caches > Compress Old Files
4. In the right hand pane, double click on the REG_SZ (default) variable to edit it
5. A window pops up that will have a long string of characters in the Value Data field:B50F5260-0C21-11D2-AB56-00A0C9082678
6. Press DEL to remove (clear out) the value data field, then click OK and then exit the RegEdit program. Note: we are NOT deleting the actual key, just the value assigned to the key!
7. That's it, and you don't even have to reboot.