Found technical proof for the Win11 KB5086672 input lag/hotkey bug?
Posted by Gullible_Client_1721@reddit | sysadmin | View on Reddit | 25 comments
Are your shortcuts (Ctrl+C, Ctrl+V, etc.) suddenly failing on Windows 11 24H2?
(or Are you experiencing issues where holding down keys (like Left Ctrl) fails to trigger repeated actions or breaks shortcuts on Windows 11 24H2?)
I’ve analyzed the recent KB5086672 update using the Win32 API and found that the OS is literally dropping input messages.
The data shows:
- Your hardware is working fine (
GetAsyncKeyStatedetects it). - But the Windows Message Queue is failing to dispatch the events to your apps.
I’ve uploaded a simple C++ PoC tool to GitHub that proves this discrepancy. If you're stuck with error 0x800F0825 and can't uninstall the update, you're likely affected by this regression.
PoC: https://github.com/sksmsWKd/Win11_24H2_KB5086672_Input_Regression
Could any experienced developers help me verify this potential input regression on Windows 11 Build 26100.8117(KB5086672 update)?
MortadellaKing@reddit
I think Windows 11 has been one of the worst releases in my recent memory. Almost vista level bad.
ReallTrolll@reddit
I have ran into crtl + C and ctrl + v not doing anything and i seemingly have to right click copy and right click paste.
dsVeritasr@reddit
Since win10, I've been spamming CTRL+C and counting 1-2-3-4-5 in my head as I repeatedly press "C".
I thought I was crazy for having to do this, I guess not.
I don't think my Commodore 64 ever missed a keystroke -or INT 16h on win3.x through win7 , but here we are.
Maybe CoPilot can help! [/s]
dotexotic@reddit
In the last week, I had issues with neither working well. I had more success with hitting C five times before it would actually have something to paste.
Itsquantium@reddit
Same. Especially when using powershell or cmd prompt. Or using putty to ssh into my RHEL. sometimes CTRL C or V doesn't register or I'll have to right click to copy.
ReallTrolll@reddit
I truthfully thought I was losing my mind and the problem was just imaginary.
No-Helicopter-4342@reddit
I have had this issue on and off for what feels like more than a year. I don't recall having it in Win10, or on Fedora so idk.
xCharg@reddit
I've noticed sometimes ctrl+shift and ctrl+alt don't work and I need to press it 2 or 3 times in order for keyboard layout/language to change. Is it the same issue?
narcissisadmin@reddit
W11 pisses me the fuck off. Time and time again I go to take a screen snippet and it takes several seconds for the screen to go dark and then suddenly the display is showing what was on it several seconds earlier.
Lots of things about it are artificially slow (like saving an Office document on a network share) and I hate it.
Smith6612@reddit
Oh you've had that problem too? I thought that issue with waiting around for the Snipping Tool to open was just a problem with my Work laptop after bogging it down and heat soaking the system. It's open within a second on my gaming desktop every single time.
I usually end up launching Snipping Tool from Start because the Print Screen button doesn't launch Snipping Tool half the time.
CharacterLimitHasBee@reddit
Just use the keyboard shortcut instead of opening the app.
Minimum-Albatross906@reddit
Well, what did you expect from Microslop? They vibe coded 30 percent of the OS, they have no vested interest in delivering a product that can be considered robust, and thier turnaround and response time is on the order of months to a year for fixes, and good luck actually getting support from a competent tech (you'll be doing SFC /scannow instead)
You want to see how fast your computer can be? Start replacing core apps with other applications. I use Directory Opus for a File Explorer Replacement and it uses 70-90% less RAM and I'd say it is 10x faster at least, on top of being feature complete.
RecoverLive149@reddit
Tell me more oh wise one.
captainpistoff@reddit
Check out greenshot, way better for screencaps
minmaxthrowaway@reddit
Had this problem and switched to using Win key + shift + s for instant snipping tool
ender-_@reddit
I had to set Win+Shift+S to open sniping tool, because otherwise the screenshots would randomly get red tint from f.lux or they'd be vertically stretched and cropped by 50%. Just another thing I have no idea how Microsoft managed to screw up this badly.
Gullible_Client_1721@reddit (OP)
Absolutelyyyyyyy agree with you. Me either.
ender-_@reddit
I haven't noticed this locally, but I did notice that I need to wait after pressing modifier keys (Ctrl, Shift, Alt) and letters if I want the modifier to register. Extremely annoying both when typing and when trying to trigger actions.
Puzzleheaded-Sink420@reddit
So I wasnt going mental, thanks!
diimaha@reddit
I had some issues last month but i thought it was my keyboard failing
Advanced_Day8657@reddit
I've been feeling it for the past year
Creative-Type9411@reddit
do tou have smart app control enabled?
swissbuechi@reddit
You can now easily dis- and re-enable. They changed that limitation just a few weeks ago.
Pandthor@reddit
This seems to have been silently changed earlier this year. We managed to re-enable it in February on a customer environment where it was manually turned off even thou documentation says it’s not possible.
Gullible_Client_1721@reddit (OP)
Both of my test devices have smart app control turned off... (should i enable it?)