You may reset admin password and it will also reset 2FA:

https://docs.onedev.io/administration-guide/reset-admin-password

That helped! 2FA didn't seem to work for me initially (using different apps), after reset it worked.

Thanks for the quick reply!

I've also just hit this issue.

I enabled 2FA thinking it would clearly be OPTIONAL for accounts and not be required as per the verbiage; Check this to enable two-factor authentication for all users in the system. Ended up locking me out of my OneDev instance because the TOTP codes wouldn't verify at all... Probably something to do with time zones or something.

But then I go to reset the admin password;

[root@dev bin]# ./reset-admin-password.sh {password}
Running OneDev Reset Admin Password...
reset-admin-password.sh: line 1801: /var/lib/docker/volumes/onedev/bin/../boot/wrapper-linux-x86-64: cannot execute: required file not found

I literally cannot reset the password... At this point the only thing I can do is completely reinstall OneDev, which is bonkers to me.

If you are running OneDev as docker container, the reset admin password needs to be executed inside the container.