Hi, is anyone else having windows 11 blocking asi drivers?
I have seen lots of comments on the ZWO forum. I think its an issue with a driver signature that is being worked on. Very annoying because I had to cut my solar imaging short today :(
ASI driver blocked?
Respectful Engaging
No issues here….
I've read about these issues.
I've paused win11 updates for the maximum of one week that it allows me just in case :(
Hi everyone
I believe this was caused by a recent W11 update. I raised the issue a couple of weeks ago with ZWO, who verified the problem, and said they are working with Microsoft to fix the issue. But no new driver yet. Please complain to ZWO, maybe they will work faster.
A temporary fix is to go to settings>System>Recovery and choose Restart now. In the restart select the option to disable driver signature enforcement. This will hold until you restart your computer, so is only temporary.
A more lasting solution is to run CMD as admin.
Type the following:
bcdedit /set testsigning on
or this should work as well:
bcdedit /set nointegritychecks on
This change will stay “permanently”. Change on to off to go back.
Note in my troubleshooting I also turned off UEFI secure boot off, so that may be necessary. You do this during a restart—do a quick search on-line you can find detailed instructions.
Finally, drivers are not checked so a little security risk in this mode, be very careful with drivers you load in this mode.
Rick
Well written Helpful Concise Engaging Supportive
Rick Veregin · May 24, 2026, 01:53 PM
Hi everyone
I believe this was caused by a recent W11 update. I raised the issue a couple of weeks ago with ZWO, who verified the problem, and said they are working with Microsoft to fix the issue. But no new driver yet. Please complain to ZWO, maybe they will work faster.
A temporary fix is to go to settings>System>Recovery and choose Restart now. In the restart select the option to disable driver signature enforcement. This will hold until you restart your computer, so is only temporary.
A more lasting solution is to run CMD as admin.
Type the following:
bcdedit /set testsigning on
or this should work as well:
bcdedit /set nointegritychecks on
This change will stay “permanently”. Change on to off to go back.
Note in my troubleshooting I also turned off UEFI secure boot off, so that may be necessary. You do this during a restart—do a quick search on-line you can find detailed instructions.
Finally, drivers are not checked so a little security risk in this mode, be very careful with drivers you load in this mode.
Rick
Can confirm the restart method works.
I used Shift+ restart and then disabled them that way. Such an annoying issue!
Glad it worked for you Luke! It is annoying and it seems to me correcting the driver certification should not take this long, not sure why they are so slow to fix the issue…
Rick
Respectful Supportive