Update KB5094126 breaks sleep mode

Question

Update KB5094126 breaks sleep mode

Paul in PSL 10

I just find this incredible the latest update once again breaks sleep mode. This has not been a good year for PV/QA at msft. In January an update did the same thing. I believe that was KB5074109. It was then fixed a month later. Then in March an update broke the fix and later that was corrected. Now we are here in June and Voila the sleep mode is broken again. For the love of God can someone log this and roll the fix into your regression tests. You cant tell me that this is a new problem. It's clear that the patch to fix the sleep mode issue is not being rolled up into the main code branch. Please get this addressed. :(

Paul in PSL 10 Reputation points

2026-07-21T12:55:48.6666667+00:00

Well Guess what the latest update breaks it again. KB5121767. UNBELIEVABLE :( The first question I have is there a way to permanently disable updates. I see I can pause them for about a month or so but that is not sufficient. I was able to get my system back to an operating point by backing out update after update to get to KB5087051 (looks like the May update). I may have gone back a bit far but it seems like that one works. I really dont have the time to keep messing with this issue. I have found the microsoft site with the update catalog. I see a later update that also worked and downloaded it but have not yet installed it to try and see if that one works. Any ideas?
Paul in PSL 10 Reputation points

2026-07-21T19:38:15.3833333+00:00

Ok I spent the better part of the day messing around with this and maybe just maybe i might have found something. First I was getting a message about a usb device that the system was unhappy with. I have seen this for quite some time and just ignored it because everything was working fine prior to the KB updates. Probably should have looked into this. Hunting around the web I found a post on how to fix that issue. I had to uninstall the device and when windows rebooted it would re-install it if it needed it. Well that didnt happen but I found another post about powered USB hubs connected through an extension cable which is what I have on this setup. Apparently Win 11 is not happy with some of those. My config had an extension cable 3' from the back of the desktop to the powered USB Hub. I disconnected the hub and the extension cable and now in device manager I see no errors or warnings in the USB section. I then ran the Update and got KB5101650 installed. I just tested it and it looks like the sleep mode is working. I am going to let this sit for the next couple of days and see if this is still the case. If so then it appears there is some type of glitch in the USB sensing that is causing the issue. Easy enough to fix once you know what your looking for. Stay tuned.
Emma1-N 10,135 Reputation points Microsoft External Staff Moderator

2026-07-22T07:23:31.4233333+00:00

Hello Paul in PSL,

I'm really glad you were able to find a workaround and a solid troubleshooting path for the issue. Please keep me posted on the results over the next few days.
Paul in PSL 10 Reputation points

2026-07-23T12:12:45.38+00:00

Ok here is an update. Just after my last post I performed a hard shutdown of the machine and 30-40 minutes later it rebooted itself. This is a strange behavior since I have tried to use task scheduler to do this and have been unsuccessful in the past (another issue all together maybe). I looked at event viewer and tried to figure out what could have caused that. Scrolling through the list I saw some errors and warnings and one pointed to a task that had an issue. I opened up task scheduler and found a bunch of items some of which I have entered myself. Below is a snapshot of the tasks defined. I disabled the adobe task, the HP task, Microsoft edge update tasks and now the sleep mode is working perfectly. I am not sure about the cause and effect but this seems to have had a positive effect. Maybe this can help others.

2 answers

Your answer

Paul in PSL 10 Reputation points

2026-07-21T12:55:48.6666667+00:00

Well Guess what the latest update breaks it again. KB5121767. UNBELIEVABLE :( The first question I have is there a way to permanently disable updates. I see I can pause them for about a month or so but that is not sufficient. I was able to get my system back to an operating point by backing out update after update to get to KB5087051 (looks like the May update). I may have gone back a bit far but it seems like that one works. I really dont have the time to keep messing with this issue. I have found the microsoft site with the update catalog. I see a later update that also worked and downloaded it but have not yet installed it to try and see if that one works. Any ideas?
Paul in PSL 10 Reputation points

2026-07-21T19:38:15.3833333+00:00

Ok I spent the better part of the day messing around with this and maybe just maybe i might have found something. First I was getting a message about a usb device that the system was unhappy with. I have seen this for quite some time and just ignored it because everything was working fine prior to the KB updates. Probably should have looked into this. Hunting around the web I found a post on how to fix that issue. I had to uninstall the device and when windows rebooted it would re-install it if it needed it. Well that didnt happen but I found another post about powered USB hubs connected through an extension cable which is what I have on this setup. Apparently Win 11 is not happy with some of those. My config had an extension cable 3' from the back of the desktop to the powered USB Hub. I disconnected the hub and the extension cable and now in device manager I see no errors or warnings in the USB section. I then ran the Update and got KB5101650 installed. I just tested it and it looks like the sleep mode is working. I am going to let this sit for the next couple of days and see if this is still the case. If so then it appears there is some type of glitch in the USB sensing that is causing the issue. Easy enough to fix once you know what your looking for. Stay tuned.
Emma1-N 10,135 Reputation points Microsoft External Staff Moderator

2026-07-22T07:23:31.4233333+00:00

Hello Paul in PSL,

I'm really glad you were able to find a workaround and a solid troubleshooting path for the issue. Please keep me posted on the results over the next few days.
Paul in PSL 10 Reputation points

2026-07-23T12:12:45.38+00:00

Ok here is an update. Just after my last post I performed a hard shutdown of the machine and 30-40 minutes later it rebooted itself. This is a strange behavior since I have tried to use task scheduler to do this and have been unsuccessful in the past (another issue all together maybe). I looked at event viewer and tried to figure out what could have caused that. Scrolling through the list I saw some errors and warnings and one pointed to a task that had an issue. I opened up task scheduler and found a bunch of items some of which I have entered myself. Below is a snapshot of the tasks defined. I disabled the adobe task, the HP task, Microsoft edge update tasks and now the sleep mode is working perfectly. I am not sure about the cause and effect but this seems to have had a positive effect. Maybe this can help others.

Answer 1

Vincent Williams 0

I have the same problem. The computer is an ASUS PN50 mini PC and it won't wake up after sleeping after this update is installed. I tried various steps to troubleshoot and the only fix is to uninstall this update and pause Windows updates. Please escalate and fix this issue.

rainstar 0 Reputation points

2026-07-18T14:26:50.35+00:00

Same here: ASUS PN50 mini PC having the same problem.
Hoping this problem will be fixed soon...

Answer 2

Emma1-N 10,135 Microsoft External Staff Moderator

Welcome Paul in PSL,

I understand how frustrating it can be after installing update KB5094126 on Windows 11, your system’s sleep mode is no longer functioning correctly, and similar issues have occurred with previous updates.

Before proceeding, I’d like to clarify a couple of points:

Does the device fail to enter sleep, or does it immediately wake up after sleeping?
Have any recent driver or BIOS/firmware updates been installed along with or after this Windows update?

In the meantime, you can try these workaround steps below to troubleshoot the issue:

Option 1: Check current power configuration

Open Command Prompt as administrator
Run: powercfg /a to confirm available sleep states

Option 2: Identify wake sources

Open Command Prompt (admin) from the Start menu
Run: powercfg /lastwake
Run: powercfg /waketimers

Option 3: Update or roll back display and chipset drivers

Open Device Manager from the Start menu
Expand Display adapters and System devices
Update drivers, or if recently updated, use Properties > Driver > Roll Back

I hope the steps above help you deal with your issue.

P.S: If the answer is helpful, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment".

Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.

Paul in PSL 10 Reputation points

2026-06-13T11:39:06.15+00:00

Emma1-N

Thanks for the reply. Here are my responses to your questions.

The device immediately wakes up after trying to go into sleep mode.

There were no updates to drivers or BIOs prior to this issue showing up again

Powercfg /a responds with

The following sleep states are available on this system:

Standby (S3)

Powercfg /lastwake responds with

Wake History Count - 1

Wake History [0]

Wake Source Count - 0

Powercfg /waketimers responds with

Timer set by [SERVICE] \Device\HarddiskVolume3\Windows\System32\svchost.exe (SystemEventsBroker) expires at 8:15:33 PM on 6/13/2026.

Reason: Windows will execute 'NT TASK\HP\HP Print Scan Doctor\Printer Health Monitor' scheduled task that requested waking the computer.

However the waketimers do not work. Another issue I faced when moving from Windows 10 to Windows 11. This is not related to this issue though as sleep mode was working before the latest security update

Device Manager

Display adapter Intel UHD Graphics 770

Lastest driver is installed 10/18/2024

Under System Devices there are 47 Items. I checked several of them and they respond with the best driver is already installed.
Emma1-N 10,135 Reputation points Microsoft External Staff Moderator

2026-06-16T07:56:19.7933333+00:00
Hello Paul in PSL,

Open Control Panel > Power Options > click Change plan settings

Select Change advanced power settings

Expand Sleep > Allow wake timers

Set:

On battery: Disabled

Plugged in: Disabled

Click Apply > OK
Paul in PSL 10 Reputation points

2026-06-16T10:38:48.29+00:00

Hello,

This is a desktop so there is no battery setting and the Allow Wake timers is enabled
Emma1-N 10,135 Reputation points Microsoft External Staff Moderator

2026-06-17T04:42:27.9266667+00:00
Hello Paul in PSL,

Please try the step: In place repair to see if the issue is resolved:

In-place upgrade is a process wherein it will upgrade the device to the latest version and repair many issues without deleting any files. Usually, it is used to repair corrupted system files, apps, and even incompatible drivers on the system.

Go to Windows 11 website: Download Windows 11

Under Download Windows 11 Disk Image (ISO) select Windows 11 (multi-edition ISO)

Once done downloading the ISO, kindly right-click on ISO then click Mount> then Click Setup.exe

You may be prompted by User Account Control. If so, click on Yes.

In the Install Windows 11 dialog, click Next.

Setup will check your PC and show a license agreement. Click on Accept in the license terms dialog.

Wait for the setup program to check for the available free space.

On the Ready to install page, make sure Keep personal files and apps has been checked.

Then click Install and just follow the prompt.

Windows 11 will restart your device several times and lead you to the lock screen. Depending on the options you set, it will keep all your files, apps, and user accounts.
Paul in PSL 10 Reputation points

2026-06-17T12:06:51.6633333+00:00

Emma1-N

I will give this a try but I have to create a backup image of my entire machine before I do this. I will advise once that is complete.

Thanks
Emma1-N 10,135 Reputation points Microsoft External Staff Moderator

2026-06-18T07:13:43.11+00:00

Hello Paul in PSL,

If you still have further concerns, please feel free to let me know. I'm here to support.
Paul in PSL 10 Reputation points

2026-06-19T13:36:59.0633333+00:00

Emma1-N

I re-loaded Windows 11 and there was no change in behavior. The machine goes to sleep and then immediately resumes.
Emma1-N 10,135 Reputation points Microsoft External Staff Moderator

2026-06-20T07:14:17.8933333+00:00
Hello Paul in PSL,

I recommend you disable the power management settings for the Network adapter and check the result. To do this, follow these steps.

Click Start, type devmgmt.msc and hit enter

Expand Network Adapter. Right click on the device and select properties

Select Power Management tab

Uncheck "Allow this device to wake the computer" but select or check the option to “Allow the computer to turn off this device to save power"

Click ok to apply the changes and restart the computer

Check if the issue persists
Paul in PSL 10 Reputation points

2026-06-20T12:45:53.89+00:00

Emma1-N

I changed the power settings and there was no change the machine still immediately resumes from sleep mode.
Vincent Williams 0 Reputation points

2026-06-21T14:39:56.03+00:00

Hello, the device enters sleep but fails to wake from sleep. I have to press the power button for 5 seconds to shut down and power back on, and it can take a couple of times to actually boot successfully after doing this.

I tried all of the troubleshooting steps to no avail. The only workaround is to uninstall update KB5094126.
Emma1-N 10,135 Reputation points Microsoft External Staff Moderator

2026-06-23T07:26:03.5533333+00:00

Hello Paul in PSL,

You could also try installing KB5094126, as Vincent Williams suggested, to check whether it resolves the issue.
Paul in PSL 10 Reputation points

2026-06-23T13:38:40.7433333+00:00

Well I uninstalled 4126 and still have the problem. When is the June monthly patches due out?
Emma1-N 10,135 Reputation points Microsoft External Staff Moderator

2026-06-24T06:55:20.97+00:00

Hello Paul in PSL,

Microsoft usually releases monthly patches on the second Tuesday of the month (Patch Tuesday). So you can expect the June updates around then.
You can also share your concerns through the Feedback Hub. The relevant team will review your feedback and use it to help improve future updates.
Paul in PSL 10 Reputation points

2026-07-06T11:03:15.9633333+00:00

Hello,

I am just getting back to ths after some travel but I have good news. During that time the Preview Update KB5095093 was installed and now sleep mode is working again. I am hopeful that when the full update is installed. It doesnt break it. I have seen that in the past. I hope MSFT got something into their regression suite to test this since this is the 3rd time this has happened this year alone. Thanks for all the suggestions.

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Emma1-N 10,135 Reputation points Microsoft External Staff Moderator

2026-07-07T07:29:50.85+00:00

Hello Paul in PSL,

Thank you for the update. I'm glad to hear that the issue has been resolved.

Please continue to monitor the situation, and feel free to reach out to me through this thread if you have any questions or if the issue reoccurs. I'll be here to assist you whenever you need support.
Paul in PSL 10 Reputation points

2026-07-07T12:19:29.27+00:00

Emma1-N

A little more background here. After rejoicing for a short time I recieved 2 different update requests. One from the motherboard mfg and one from Intel. I installed a number of motherboard updates to their control panel sw and it had a bunch of driver updates along with it and then Intel sent an update to install their driver and support assistant. Well once I installed all of these it stopped working. Lets say I was not happy. I went back and saw that the video driver install through the intel app failed. Well after reinstalling that it was back working. Just some food for thought and something to watch for. The Intel app is pretty nice it clearly knows the hardware and since its Intel based I will be relying on it for driver updates moving forward.

Thanks again for all of your support