On the Microsoft side, the latest update for Windows 11 is causing chaos among users of the system. Indeed, the KB5074109 update causes display problems, breaks the Outlook email client, and/or prevents connections to Windows 365 and Azure Virtual Desktop services. Handy for professionals…
Windows 11: a problematic KB5074109 update!
Broadly speaking, this new update aims to deploy around a hundred security fixes, including zero-day vulnerabilities… But things rarely go as planned with Windows 11, and this update is causing a lot of trouble.
First, we’ve noticed black screen issues that occur without warning for a few moments before disappearing. No manufacturer seems immune to this, and both AMD and NVIDIA cards are affected. The cause has not yet been identified, but some users have found a workaround by switching the DisplayPort standard from 1.4 to 1.2… Then switching back to 1.4. Otherwise, in a less serious case, wallpapers disappear, leaving a black background. Okay, it’s annoying, but all you have to do is put a background image back on the desktop.
Windows updates are like Russian roulette…
More annoyingly, the Outlook client (with POP email account) is broken. Once closed, the process remains active in the background. As a result, it is impossible to restart it by clicking on its icon… Or an error message appears. To work around this problem, you have to use the task manager to kill the process before restarting it.
Finally, even more annoying, it is impossible to connect to Windows 365 and Azure Virtual Desktop services without getting a 0x80080005 error. This issue was quickly fixed by removing the faulty feature via KIR. This requires updates KB5077744 for versions 25/24H2 of W11 and KB5077797 for 23H2 of the system. However, you have to search for it and install it manually via the Windows Update catalog.
Basically, you should avoid installing this update as much as possible until fixes have been deployed. It must be said that modern operating systems are incredibly complex, and the deployment of new features can interact negatively, creating this kind of problem… But Microsoft is no longer a simple solo developer in his garage: we would like to see an end to this kind of problem.
