High CPU usage and Windows Search Bug, which were unknown issues in the Cumulative Update KB4512941, hit a number of Windows 10 users a few days ago. Microsoft was quick enough to acknowledge the issue and promised a fix in the subsequent Cumulative Updates and while the company did issue a fix in the latest Patch Tuesday Update(KB4515384), some users are now complaining that Windows Search still returns a blank plage instead of the desired results — a bug that Microsoft claims to have resolved in the yesterday’s Patch Tuesday Update, which was issued to Windows 10 1903 users.
“Addresses an issue that causes high CPU usage from SearchUI.exe for a small number of users. This issue only occurs on devices that have disabled searching the web using Windows Desktop Search,” yesterday’s changelog reads.
A user reported the issue on Microsoft’s Feedback Hub saying, “KB4515384 should address an issue that causes high CPU usage from SearchUI.exe for a small number of users. But this update again introduces the same problem as the previous update. Part of the problem is a high CPU usage (~30%) and a totally broken search function. Currently, I see no other option than to blacklist this update also to prevent update to reinstall it again and again.”
Another user on Reddit corroborated a similar story saying, “Sigh, searching for anything on the Start Menu results in a blank window again after installing this update.”
Aside from the Search bug, some users complaing about broken Start Menu after installing the latest Patch Tuesday Update.
“I tried install KB4515384 on one of my workstation with no luck. Menu start stopped working with critical error and sign out demand. After uninstall latest CU problem with start menu was solved but action center won’t open now. Reinstalling update do nothing. Windows 10 especially 1903 is the most bugged OS ever. I suggest stay at 18362.295 as long as possible or until all flaws will be finally fixed,” a user noted.
On the Windows Search bug, Microsoft earlier said that users who disabled the web integration in Windows Desktop Search are going to get affected by the Search bug. However, no official words came from Microsoft on the return of the Windows Search bug, and broken Start Menu issue yet.