How to Modify or Disable Disk Defragmenter Schedule in Windows 7 and Windows Vista

The Disk Defragmenter in Windows 7 and Windows Vista is scheduled to run every Wednesday at 1:00 AM. This article tells you how to disable the defragmenter schedule in case you’ve installed a third-party defragmenter, or modify the schedule accordingly.

Disk Defragmenter Scheduled Task

Click Start, type dfrgui.exe and press {ENTER}. When you are prompted for an administrator password or confirmation, type the password or provide confirmation. To disable defragmenter schedule, uncheck the following option:

If you’re using Windows Vista, enable the Run on a schedule (recommended) checkbox, and click OK

In case you want to modify the defragmenter schedule, click the Modify schedule… button, and select the frequency, time in the resulting dialog.

If you’re using Windows 7, the user interface varies a bit, and appears as below:

Schedule is enabled by default. In case its disabled in your system, click the Turn on schedule… button.

Click the Run on a schedule (recommended) checkbox, and there you can modify the day and time accordingly.

About the author

Ramesh Srinivasan founded back in 2005. He is passionate about Microsoft technologies and has a vast experience in the ITeS industry — delivering support for Microsoft's consumer products. He has been a Microsoft MVP [2003 to 2012] who contributes to various Windows support forums.