This certificate has an invalid issuer in ios keychain

Question

Keychain show the certificate error > This certificate has an invalid issuer

See the screen shot.

RefLink> This certificate has an invalid issuer keyc

Answer 1

1. Download https://developer.apple.com/certificationauthority/AppleWWDRCA.cer and double-click to install to Keychain.
2. Select "View" -> "Show Expired Certificates" in Keychain app.
3. Remove Apple Worldwide Developer Relations Certificate Authority certificates from "login" tab and "System" tab in Keychain app.

Ensure the new downloaded cert is in both login and system Default to only system tab will still give error.**

4. Delete all your certificates and provisioning profile on developer portal.

5. Create certificate signing request from keychain.

6. Recreate all the certificate & provisioning profile using the CSR generated in step -5

7. Download and install those certificates created on step-6 and try.