how is this not every news.. windows 10 will go out of service in a month, I really hope they leave it WITHOUT this bug also, of course MS bots post stuff like did you try restart? safe mode? dism sfc scannow? these people ought to be fired.
August 26, 2025 KB5063842 (OS Build 19045.6282) Taskbar feels clunky after update
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(32, 18%, 13%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ETB%3C/text%3E%3C/svg%3E)
thom b
10
Reputation points
Hello,
After the new KB5063842 update, my taskbar has a slight delay. When I have two tabs open and switch between them with the mouse, there is a noticeable delay, but alt-tabbing works flawlessly.
Same thing happens when I click show hidden icons via mouse on my taskbar.
I would also like to add that I have never had a problem with this.
Windows for home | Windows 10 | Desktop, Start, and personalization | Task Bar
11 answers
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![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(169.60000000000002, 53%, 26%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EHO%3C/text%3E%3C/svg%3E)
HA OZ 0 Reputation points2025-09-12T00:50:34.3333333+00:00 -
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(64, 77%, 16%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ELB%3C/text%3E%3C/svg%3E)
Lester Bernard Reyes 86,190 Reputation points Independent Advisor2025-08-30T00:15:29.69+00:00 Hi, thank you for replying. If the in-place upgrade is not an option for you, I recommend creating a new user:
Go to Settings > Accounts > Other users > Add account
Follow the prompts to create an account.
Then go to Settings > Accounts > Other users > Select the account you created > Click "Change account type" then select "Administrator"
Restart the PC and log in to the new account
For reference: https://support.microsoft.com/en-us/windows/manage-user-accounts-in-windows-104dc19f-6430-4b49-6a2b-e4dbd1dcdf32
If the issue persists and since the in-place upgrade is not an option for you, I suggest posting the issue on the feedback hub so that developers will also be aware of this problem, and hopefully the fix will apply as soon as possible.
To send Feedback: https://support.microsoft.com/en-us/windows/send-feedback-to-microsoft-with-the-feedback-hub-app-f59187f8-8739-22d6-ba93-f66612949332
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thom b 10 Reputation points
2025-08-29T09:01:29.2566667+00:00 Yes, I tested it in safe mode and it works perfectly! Also I have Nvidia GPU.
I hope they fix it. Is it worth reporting somewhere or team is already aware?
So for now, the only solution is to remove this update?
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![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(172.8, 23%, 26%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EK%3C/text%3E%3C/svg%3E)
K3rnelPan1c5750 5 Reputation points2025-08-29T18:29:20.9266667+00:00 The only solution is to remove the update. I’m not sure if Microsoft is going to fix it; I had several people who experienced this, so I started investigating in depth what was causing it. Well, it seems they made changes or broke some things related to composition.
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K3rnelPan1c5750 5 Reputation points
2025-08-28T23:39:18.2433333+00:00 Hi, I’ve been investigating this exact issue and here’s what I found:
- The delay when opening the Start Menu on Windows 10 22H2 matches very high spikes in
dxgkrnl.sysanddxgmms2.sys(the DirectX graphics kernel components). - I captured several traces with ETL/WPA, and the results are consistent: opening the Start Menu triggers extra DxgKrnl load, even without GPU drivers (just using the Basic Display Adapter).
- In Safe Mode, the problem does not happen at all, maybe because DWM Composition works in a different way, idk.
I believe the issue started after installing KB5063842 (August 2025, Cumulative Update Preview). Microsoft hasn’t listed this as a known issue yet, but everything points to that update changing how the Start Menu interacts with DWM/DxgKrnl.
So far I’ve seen 3 or 4 people with this problem, and all of them were using an NVIDIA GPU. I don’t know if that’s related, but in my case it does not happen when using an AMD GPU. - The delay when opening the Start Menu on Windows 10 22H2 matches very high spikes in
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thom b 10 Reputation points
2025-08-28T21:13:58.6933333+00:00 Already done it with command method and there's few errors 0x80073D02, should I do it in safe mode? Was trying it in normal mode with restart but no luck so far.
Also, what exactly does this command do?
Btw, before updating the system, I downloaded the “widgets platform runtime" update from Microsoft Store, and after downloading it and updating system it started happening. I uninstalled it yesterday (widgets platform) but the problem remained.
Are there any other ways to fix this issue besides an in-place upgrade?