IOS Apple Development Certificate invalidation solution (Failed to locate or generate matching signing assets)

from February 14 onwards, the students who upload the program may encounter hints that failed to upload.

and open your keychain and find that all certificates show that this certificate issuer is invalid.

The following conditions occur:

Failed to locate or generate matching signing assets
Xcode attempted to locate or generate matching signing assets and failed to doing so because of the following issues.
Missing IOS distribution signing identity for ... Xcode can request one for you.

cause & Workaround:

1, because we upload the program before, we need to set up a certificate in advance, and set up a certificate will involve requesting a certificate from a certification authority.

The issuer of this certificate is invalid.

2. When we go to our keychain, select the above display-Show expired certificate

3, then choose to delete it, go to

Https://developer.apple.com/certificationauthority/AppleWWDRCA.cer

To download a new certificate.

4, double-click after the run can, however some students may add unsuccessful.

That's because you don't have permission to set the certificate.

If it is still not responding, restart the keychain.

5, add success, you can see the previous certificate all valid.

To put it simply, the root certificate that you issued the developer certificate is invalid because he expires on February 14, 2016.

The certificate you made before will fail completely. Reinstall the root certificate.

IOS Apple Development Certificate invalidation solution (Failed to locate or generate matching signing assets)