Error: Unable to install “My App” Failed to install embedded profile for com.apple.myapp : 0xe800801a (This provisioning profile does not have a valid signature (or it has a valid, but untrusted signature).)
I've tried almost everything, but I keep getting the same message on a Mac Mini M1 and several physical iPhones (11 and 16, both Pro). On a MacBook Air (Sequoia 15.7) with the same account, the same profiles work without any problems; and on simulators with iOS 26, it also works without any problems. This clearly tells us that the provisioning profile is not the problem, which is what the message mentions. It obviously has to do with the 26 update.
P.S All of this worked fine before installing iOS, macOS, and Xcode 26.
