Windows 11 the latest cumulative update is failing to install for some users with no explanation as to why.
This problem with Microsoft’s August patch round (KB5016629), which was deployed last week, is that, with a few installation attempts, it’s stalling with one of the normally uninformative error messages we’re unfortunately used to seeing (and sighing, no doubt).
As latest windows (opens in new tab) In reports, the installation error quotes a nonsensical code ‘0x80073701’, with several users complaining that the update will not trigger on Microsoft’s Feedback Hub.
A message says, “It takes a long time to download and then this error pops up – no other info – someone at Microsoft must know what the error code means and how to fix it.”
This issue was also raised in Microsoft’s official Answers.com (opens in new tab) help forum. The suggestions made here – take them with caution as this is not official advice as such – include uninstalling malwarebytes (or at least temporarily disabling real-time protection) and also disabling the .NET Framework 3.5.
So far, Microsoft hasn’t acknowledged this issue, so if the company is investigating, it’s doing so quietly.
There are, however, some known issues that the software giant flagged with KB5016629, related to XPS Viewer and Edge browser (specifically with IE mode tabs in the latter case); so watch out for that too.
Another thing to note here is that in addition to applying various security fixes, this patch addresses a serious issue with the Start menu – that is, that some users cannot open it. So if you’ve been affected by this glitch, as well as the install failure bug above, then this is going to be a frustrating combination of factors working against you. That said, this overlap will likely just be a very small niche of particularly unlucky people, no doubt.
We hope to hear an official word from Microsoft about this bug soon, and maybe we’ll see a fix implemented quickly. In the meantime, you could at least try to temporarily turn off your antivirus as suggested above to see if that helps.