Security News > 2020 > November > Windows 10 Defrag TRIM bug still not fixed after six months
After the release of two Windows 10 feature updates and numerous cumulative updates, Microsoft has still not fixed a bug causing Windows Defrag to TRIM non-SSD drives.
In May 2020, Microsoft released Windows 10 2004, the May 2020 Update, and introduced two bugs causing SSD drives to be defragged too often and for the TRIM operation to be attempted on non-SSD drives.
The first bug prevented the Windows 10 Automatic Maintenance feature from remembering when a drive was last optimized when the operating system was restarted.
In September, Microsoft released the "2020-08 Cumulative Update Preview for Windows 10 Version 2004" update, which fixed the Automatic Maintenance bug causing SSD to be defragged too often.
The second bug caused the Windows 10 defrag feature, Optimize Drives, to attempt to TRIM non-SSD drives.
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