Article ID: 238165
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When you run the Disk Defragmenter tool in Windows 98, you may receive the following error message:
Error Defragmenting Drive C
Windows cannot finish defragmenting this drive because it has encountered a problem. Click Help and carry out the instructions for running Scan Disk, and then try defragmenting again.
This issue can occur if the Applog file in the hidden C:\Windows\Applog folder is damaged.
To resolve this issue, follow these steps: