Same probleme here
I am also facing same issue. Nasty surprise. Can't build app.
Same situation here. I have tried every possible solution and nothing really worked.
Also getting this issue
same for my free developer account.
All my old and new projects failed with the same error.
Library ▸ MobileDevice ▸ Provisioning Profiles
All Providion Profiles gets Unknown App ID.
tried removing them but still gets Unknkown ID in the new profiles.
I am also experiencing the same problem. I think it is some kind of apple’s xcode outbreak. I hope they will fix this as soon as possible.
I followed those steps and it worked for me.
But I also deleted Xcode and downloaded an old version (just to authenticate on Apple-Id)
DELETE XCODE (remove application) and Empty Trash
1 - Deleted all Xcode files Go to: ~/Library/Developer/Xcode/
2 - Deletei all Xcode certificates in KeyChain
and Empty Trash
Install Xcode Old Version:
Create new project on Xcode (login Apple ID)
Take a cold Beer....
Now and just add your old project and you're done.