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Windows 11 Update KB5089573 breaks PinUP

if you are NOT running windows 11 then this page is not for you and can disregard.

June 2026: Not everyone has this error, so only need to do this if you are having the errors on startup.

Windows 11 sent an update KB5089573 that completely blocks and breaks PinUP (any version v1.5/v2.0) from starting up.

When starting POPPER you will get a message “Server Execution Failed” like this:

Or if you are just using PinUP Player, you will get an error running PuP-Packs in VPX like “

Two workarounds:

1> rollback and uninstall the KB5089573 within windows 11 setup/updates.

2> My Workaround Registry Fix (testing) : June 10, 2026

OK. I believe I've got the fix/workaround for the latest win11 update KB5089573 problem.
The issue seems to be how win11 can block some activex/com registrations with 32/64bit surrogates now.
Thanks to @vpfiends for letting me hack-away remotely on his vpin over 3 days to debug/figure the issue out.
Note: you should only run the bat file registry fix if you have the error, not everyone has the issue so no need fix what isn't broke in win11.
DO NOT run this for win10 or older windows as it hasn't been tested and not needed in windows 10.

download: https://nailbuster.com/pup/PuPRegister_64bit_FIX_WIN11.zip
unblock/unzip to a temp folder and run-as-admin (restart PC afterwards)