Windows Insider Preview Update Mistake

Question

My system core is 26H2, but i accidentally updated 26220.9022. How do I undo it and update the correct build. Will updating the wrong build be a problem

Answer 1

Updating to build 26220.9022 is not necessarily a problem. If your computer is working fine, you can continue using it. However, if it's an Insider Preview build and you wanted the stable version of Windows, you may experience bugs or unfinished features. If the update was installed within the last few days, you can go to Settings, System, Recovery and use Go back to return to the previous build (if the option is available).

If Go back is not available, you cannot simply switch to another build through Windows Update. You will need to wait for the correct update or reinstall Windows if you want a different version. To determine the best option, check your Windows version by pressing Windows + R, typing winver, and noting the Version and OS Build.

Answer 2

My system core is 26H2, but i accidentally updated 26220.9022.

Experimental (Dev) channel is for 26H2, but if you get 26220 you must be in Beta channel. If you want to go to 26H2 then change insider programm setting to Experimental channel to get build 26300.xxxx