Unable to install Windows Updates KB5039211 and KB5039299 - Error 0x80070643

[criminalforester]

Hello, I’m having trouble installing the Windows updates KB5039211 and KB5039299. After attempting the installation, I encounter the error code 0x80070643. I tried a solution I found in another discussion, which involved using the reagentc /disable command, but this resulted in an error saying "operation failed: 17" and "an error has occurred."

Now, I’m not sure what to do next. and I cannot access any browsers as the pages crash and I’m unable to open most applications because they won’t load.

 

[Bighorn]

So what are you using to post the question? This forum, and most all others, use an Internet Browser such as Edge, Firefox, SeaMonkey, Brave, Opera, Vivaldi, etc., to display their pages and allow responding.