If you’re experiencing sudden high CPU usage in Windows 11, Microsoft may know what’s causing the problem. A nasty File Explorer bug affects Windows 11 21H2 and 22H2, according to a software giant based in Redmond, Washington.
in particular, microsoft says Users can share files/folders[セキュリティの詳細設定]dialog box[有効なアクセス]The menu cannot be displayed. Instead of properly responding to user commands, it says “Query results may not be displayed and explorer.exe may continue to use CPU even after the Advanced Security Settings dialog is closed.”
Microsoft reports that high CPU usage continues to plague Windows 11 systems until the currently logged in user signs out or the system is rebooted. According to Microsoft, simply locking Windows will not fix the bug.
Note that this File Explorer bug was introduced in KB5026368 and KB5026372 in Windows 11 21H2 and 22H2 respectively. These are the Patch Tuesday Cumulative Updates released on May 9th. The interesting thing is that it took over a month for Microsoft to realize the problem. However, this seemingly slow response time seems to be explained by the company’s statement:
“Consumers with Windows devices at home are less likely to experience this issue.”
If you are currently experiencing high CPU usage when accessing this particular feature, you can try the logout/restart workaround recommended by Microsoft. In the meantime, the company says it is currently working on a fix internally and will be rolling out later this month.