Woody Leonhard has also mentioned this in a short article. Note – the updated DLL files for the ms defrag fix are defragproxy.dll, defragres.dll & defragsvc.dll – all 3 of them with ver. "We fixed an issue that causes the Optimize Drives dialog to incorrectly report that previously optimized drives need to be optimized again." The KB4571744 update for Win10 v2004 & v20H2 includes the defrag/optimization bugfix as mentioned by MS in their blog: EP already mentioned in this comment (ths) that the optimization bug should be fixed by this update. The announcement of the update KB4571744 for Windows 10 20H2 was made in the Windows Blog, where you can read the extremely long list of fixes. But since Windows 10 version 2004 gets the same updates, the fixes are applicable for this version as well.īut now Microsoft is testing an update for Windows 10 20H2 with Windows insiders in the Beta Channel as well as in the Release Preview Channel for Windows 10 Version 2004. The update is intended for Windows 10 20H2, which is expected in autumn. Update KB4571744 for Windows 10 V2004 and 20H2Ĭurrently Microsoft is testing update KB4571744 with Windows Insiders, as I mentioned in the blog post Windows 10 Insider Preview Build 19042.487 (20H2).
Defrag also wants to perform trims on non-SSD drives and unnecessarily tries to optimize hard drives as well, because the information when a drive was optimized last time is forgotten. This leads to the unpleasant effect that SSDs are optimized more often than necessary. Blog reader Volker had already noted this in this German comment at the end of May 2020. The drive optimization of Windows Update (Version 2004) no longer remembers the latest version, but shows 'Never run, optimization required'. I had already mentioned the problem in June 2020 in the blog post Windows 10 2004: Bug defragments SSDs too often.
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