Problem: To run the Disk Defragmenter shortcut from Start > Programs > Accessories > SystemTools > Disk Defragmenter, only an error window “MMC cannot open the file C:\Windows\system32\dfrg.msc. This may be because the file does not exist, is not an MMC console, or was created by a later version of MMC. This may also be because you do not have sufficient access rights to the file.” appears.
Solution
Solution
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