The KB4535996 optional update is expected to be the second-highest”-over after Windows 10, with users reporting problems after its late February release, including failed installation, failed power, game drop frames, blue screen, and SignTool.exe crash. Microsoft acknowledged the problem in a community post and promised to provide a fix by mid-March.
In response to the SignTool.exe crash issue, the company said: “Following the installation of the latest optional updates for Windows 10 Version 1903 and Version 1909 (KB4535996), we acknowledge the SignTool.exe crash issue. If you experience a problem with signtool.exe or receive an error, you can uninstall the optional update KB4535996”
KB4535996 has the following issues
There is user feedback that KB4535996 cannot be installed and displays generic error messages such as 0x800f0922 and 0x80070003.
A user in Feedback Hub wrote: “Windows Update lists this as an optional update, and I can click Download and Install.” It downloads 0 to 100%, then it takes some time for the installation to reach 100%, then asks for a restart, then starts updating on the blue screen: count to 6%, and then restart. Indicates that the update could not be completed, that the changes could not be undone, and that the troubleshooter could not find any reason. “
Random card death
Other users also indicated that there was a “random card-dead” option after the update upgrade and other performance issues. One user said: With the latest driver, XPS 15 installed KB4535996 after a random card death problem.
Cannot be switched on after installation
Another user said: “I just installed this update on my PC and I can’t start it right now.” A series of beeps (a completely blank screen) caused the BIOS POST test to fail. “
SignTool.exe (Signature Tool) Crash
Sign tool (SignTool.exe) is a command-line tool for digital verification or signature files. Many system administrators report crashes after installing this particular update.
On a PC running Windows 10 KB4535996, Microsoft’s Signature Tool (SignTool.exe) may crash and display the error message 1073741502. This has been confirmed by many people in the Posts and Comments section of the Feedback Center.
One user wrote: “After installing KB4535996, all my projects in Visual Studio 2019 failed to sign Authenticode with DLL, EXE or MSI using signature tools. Sign Tool is executed from the command line, or nothing is displayed when you execute PowerShell without providing parameters. “
Game FPS drop frame and audio caton
A Reddit post wrote that the quality update caused some games to drop FPS frames and audio cassons. “It’s not particularly serious, but my game frames are down about 10 frames and there’s an occasional caton phenomenon,” the user said. After uninstalling the cumulative update, everything is fine. “
Can’t put PC to sleep
One user wrote in a comment: “Surface Laptop 2 can’t sleep after installing the update. Even when it is closed, the screen wakes up after a few minutes. It appears that the update has compromised the power management system. “
Another user wrote: “This is definitely an issue that needs to be addressed. If you want to prevent problems, you need to prevent this optional update from being installed. I have chosen to postpone the update for 7 days and uninstall KB4535996 again. This update keeps my laptop and desktop from going to sleep mode. “
Another user wrote: “This update prevented 2 computers from going to sleep mode. Both devices run Windows 10 v1909 Home. After I uninstall the updates, they all work fine. “
One user wrote on Twitter: “My computer wakes up from sleep every few hours due to the latest Windows 10 updates KB4537572 and KB4535996. “