Documentation for the known and recurring Microsoft issue (SaaS): January 11, 2017 - June 15, 2026

The Substack post where you can discuss this issue can be found here: When Microsoft announces a Windows update, you should know your second monitor is likely to die.

For additional reading:

June 16, 2026 post: If you don’t think SaaS jeopardizes every bit of your work, think again.
March 26, 2025: SaaS and the perils of cybersecurity: What President Biden understood and Waltz-Hegseth do not.
March 7, 2025: SaaS and the perils of cybersecurity: What we can learn from Intuit’s behavior.

January 11, 2017. Microsoft’s latest Windows update breaks multi-monitor gaming | ExtremeTech, by Joel Hruska. “With Windows-as-a-service, you never need to worry about installing a patch because every Microsoft patch is guaranteed, 100%, to always work, never cause problems, and certainly never break previous functionality. That, at least, is the official corporate line. Microsoft’s ability to deliver on that promise is highly questionable to nonexistent, as evidenced by a new problem baked into the January 10, 2017 build (KB3213986 (OS Build 14393.693)).”
Snarky comment: We believed them! When Office 365 became a SaaS, no one protested. We let them extort us.

December 16, 2017. Latest update has messed with my dual monitors. “Help! The automatic updates happened a few days ago and since then my dual monitors are completely messed up. Now they are just a duplicate of each other, instead of working independently and the whole display has changed, it’s stretched and looks like a computer in the 80’s. I’m not particularly tech-savvy and don’t know what to do. It’s horrible! A previous update also messed up my monitors but only in the respect that it wouldn’t recognise the second monitor at all, I had to manually extend it each time until a following patch fixed it. But now this latest one has really messed my screens up. I don’t get why this keeps happening, driving me nuts! And at such a mad time of year... please help! Thanks.”

October 19, 2019. Computer won’t detect monitor after latest Windows 10 update. “Windows applied a new update this morning and since then one of my monitors isn’t working. If I have it plugged in by itself it stays active (the light stays green) and the loading screen appears for a second, but then the screen turns black even though Windows is obviously running. The moment I plug in my second monitor the login screen appears on that screen as normal. If I have both plugged in at once the first monitor goes into idle mode, as in the light turns yellow.
“This has happened before after an update and I managed to fix it then, but I’m not sure how. I fiddled with a bunch of things and then rebooted and it suddenly worked. That was a while ago and I’ve forgotten what exactly I did, unfortunately.
“This time I’ve tried a number of things. I tried unplugging the monitor from the computer and plugging it back in, and I tried a different DVI port but neither worked. I tried updating the graphics card driver, disabling the graphics card, reinstalling it, nothing. I checked to see if I could roll back the driver to an earlier installation but the option was greyed out. I tried changing the screen refresh rate from 60 to 59 but that didn’t help. I haven’t tried going back to a restore point before the latest Windows update because I didn’t try that last time so I figure this can be fixed without resorting to that.
“Any suggestions would be welcome. Thanks.”

June 20, 2021. Windows 11 update will finally improve multi-monitor setups | Windows Latest, by Mayank Parmar. “With Windows 11, Microsoft is taking steps to improve the experience for those who utilize two or more monitors/displays.
“When you use two or more monitors with Windows 10, you may have encountered a problem where open programs or tabs get moved to a different location of the monitor or crammed onto a single display when you leave the device untouched some time and it goes to sleep.”

March 15, 2023. Main External Monitor Not Working After Windows Update? Screenshot.

July 12, 2023. Display issues after latest Windows 11 update. “I just installed the latest Windows 11, and since then my screen resolution has changed (slightly) but the settings are the same. The windows transitions are laggy, I can’t change the brightness of the screen anymore. It’s not a GPU issue, I uninstalled the drivers, reinstalled older ones, no change.

“It’s definitely due to the latest update, so is there a way to rollback the update? In the settings I can only rollback to updates I’ve installed months ago.”

October 11, 2023. Did the 10/11 updates kill the ability to use an external monitor? “My Surface laptop updated last night and my PC no longer recognizes or can find my external monitor. I’ve tried multiple different monitors, cables and none of them work any longer. Device manager scans won’t even see the monitor.”

September 10, 2024. Autumn’s big Windows update is apparently causing display problems | PCWorld. “There’s a major Windows 11 update coming this season and it seems to be causing various screen-related issues for beta testers.
“MSPoweruser reports that several users — both on Microsoft’s support forums as well as on Reddit — have complained about numerous monitor and display problems ever since they started testing the latest version of the Windows 11 operating system.”

November 11, 2024. My PC restarted for an update last night and now the monitor gets no signal from it. “The PC boots up fine, power light turns on, fans spin, keyboard and mouse light up, but nothing I try will make monitor turn on. Cable connections are fine and I checked monitor with another computer and it worked fine. I’ve tried things like restarting graphics driver but using the shortcut to do so doesn’t seem to do anything. I don’t think it’s a hardware issue because I’ve never had a problem like this before and PC was running well prior to restart. Help?”

January 18, 2025. External Monitors Not Responding After Latest Windows Update. “Since installing the latest Microsoft update, my laptop (connected to a docking station for operating without being open and running multiple monitors) has been experiencing an issue where the external monitor does not respond to the keyboard when I close the laptop. This means I can’t turn on the screens or access my computer without manually opening the laptop every time I want to use the computer, which is very inconvenient. I changed the power settings, thinking sleep mode or power-saving options were causing this issue, but it seems not to be the case. Has anyone else experienced this issue, and do you have any suggestions for a fix?”

April 21, 2025. Windows 11 keeps changing my monitors. “Every time I turn on my computer, Windows changes my monitor scale, and resolution. I have to set it back to the way I want it. Very annoying. I have 16 monitors, a huge pain to set them all up again every time I wake my computer, or start it up.
“Any way to stop this annoying action from Microsoft ?
“NOTE: All updates. Drivers up to date. Once its running, its fine (Usually, sometimes windows will reset cards for no particular reason). Using a myriad of after tools. Even wrote some software to fix it. (Kinda works). I found that windows 11 simply thinks there are new monitors (There are not) so it re-detects all. Which of course wrecks the good settings.
“Suggestions ?”

June 13, 2025. my laptop monitor won’t work after windows update. “I updated my Windows 11 Home using Windows Update yesterday. As of now, I can only view my desktop (or anything else) when I plug in an external monitor. My laptop monitor still works; when I ran a BIOS update from Lenovo, I saw the progress bar on my laptop monitor.
“I went to Display, and it was set on ‘Only display on 2’. I changed the settings several times, but only the external monitor displays anything.”

August 1, 2025. Screenshot of known issue (my computer).

August 18, 2025. 2nd monitor not working after new update August 12, 2025—. “first time asking for help. not sure if its related but since the new update my HP laptop does not detect the 2nd monitor. It’s not the monitor or the cord, both works fine with my other laptops. i even used a 2nd monitor on the HP that is in question and still does not display. i rebooted, checked for updates even on the graphic card and i am at a loss, Possibly the connection or some piece broke inside and that could be the cause, but it worked fine on Friday, update came on Saturday and today no 2nd monitor and again it does not detect it. any ideas?”

August 22, 2025. my monitors wont work properly after windows 11 update. “Hi, so my pc has been facing alot of issues ever since i updated to windows 11, the biggest i have been facing is my monitors will not work radomally. orignally i turned on my pc abou ta day after i updated and my screen froze befroe i could even log in and my monitors turned off, it wasnt the cable connection or anything its something to do with my pc. however after about 30 minutes if panicking it randomally started working again. the next day the same thing happened bwhen i opend phas so i contacted microsofts chat help and i the end the result was that i should use the shift ctr, windows, b shortcut to make my monitors work again, i dont know if this worked but my moniors worked for a good week after that and i changed a few display setting and lowered my graphics to prevent it from happening again. however just a couple hours ago my pc was working completely fine, but when i went to go on it again my monitors wont work, they just say no signal and will not connect to my pc, it is not a cable issue and i tried the reset shortcut and unplugged all my cables and it wont work, i need advice.”

November 6, 2025. Known monitor issue after update. Screenshot from my computer.

November 26, 2025. Microsoft teases transformative upgrade for Windows 11 multi-monitor users | PC World, by Kristian Kask. “If you use multiple monitors on your computer, it can be a bit difficult to access all the controls to change the brightness and contrast of the different screens. But a new tool in Microsoft’s downloadable Powertoys collection of utilities for Windows enthusiasts will soon make it easier.”

November 30, 2025. I believe a recent Windows update broke how it outputs to monitors | Reddit. If anyone knows symphonia117, please thank him/her for one of the most detailed explanations of what happens with these Microsoft updates. Detailed to the max!
Note: Microsoft needs to school its devs responsible for Windows updates on this post and tell them that if they don’t learn from it, that if they do this one more time, they’re fired.

December 12, 2025. Windows Update Possibly Causing Dual External Monitors Detected as One Display on Laptops? “We are experiencing an issue affecting multiple laptops where users cannot extend to dual external monitors. The laptop detects both external monitors as one combined display, preventing proper extended mode.
“This issue started suddenly across multiple users on the same week.
“The dual-monitor adapters, cables, and Samsung monitors have been verified working on another laptops that is not affected. We currently using dual-monitor adapter…”

January 13, 2026. multiple monitors stopped working after upgrading to windows 11. “Laptop was connected to multiple monitors and running windows 10. After upgrade to windows 11 the laptop does not see the devices when trying to update in display. Error message is “we did not find another display.”

January 14, 2026. My second monitor doesn’t work after update. “My computer updated overnight. January 13, 2026—KB5074109 (OS Builds 26200.7623 and 26100.7623). Now my second monitor doesn’t work, it is not detected. How do I fix this? And how to prevent it in the future?”
Note: Microsoft’s response was that he should roll back the update. But as usual, that is not possible, because most of these are also security updates and cannot be uninstalled.

January 14, 2026. After update no longer detecting a connected screen. “I have two monitors connected to my laptop via a dock. After the update, I can no longer even detect the third display, only my lap top screen and the main monito. Nothing changed except the update. I’m not an IT professional, what settings can I change to get my system to detect the second monitor?”

February 15, 2026. 02/12/26 - After the update my computer has ‘lost’ my 2 additional monitors. “I ran the update as requested and now both of my additional monitors are dead. The system does not find them, I have tried unplugging/replugging to get the computer to ‘see’ them. I have mannually tried to add them back.”

February 28, 2026. New Windows 11 Update broke my monitor(?)/PC(?) | Reddit. This Redditor is smarter than the average bear and gave lots of very good detail. It’s a long thread, because of all the Me Toos.

March 4, 2026. Multiple displays. “I had an update last night, when I came into my office only 1 display was showing. I have 3. It will not detect the other 2 displays.”

March 31, 2026. Windows 11 suddenly limited to one external monitor after update. “After installing the March 2026 Windows 11 cumulative update (likely KB5079473), the system was limited to one external monitor + internal display. Hardware was unchanged and Intel Graphics Command Center continued to report support for 4 displays. Issue resolved immediately by deleting the following registry keys and rebooting: HKLM\SYSTEM\CurrentControlSet\Control\GraphicsDrivers - Configuration - Connectivity – ScaleFactors
“This forces Windows to rebuild the display topology (MST/port routing). This appears to be caused by corrupted cached display configuration data introduced by the update. Reinstalling Intel and NVIDIA drivers did not help.
“Verified that this solution works on all connected display devices via all ports and configurations.”

April 5, 2026. Windows update issues with screen resolution? Screenshot.

June 15, 2026. Screenshot from my ticket.

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