this flow has been working perfectly for some time now (years) but this morning it's failed three times with the following error message. What might be the issue here?
Error from token exchange: Bad Key authorization token. Token must be a valid JWT signed with HS256
Failed to validate token: IDX10503: Signature validation failed. The token's kid is: '645E337E4F0093890960AFDFAD9ED66CB4F7B5C4', but did not match any keys in TokenValidationParameters or Configuration. Keys tried: 'Microsoft.IdentityModel.Tokens.X509SecurityKey, KeyId: 'D91BB213745BA7ADFE215941FCE6CBC7A4E8ED43', InternalId: '2RuyE3Rbp63-IVlB_ObLx6To7UM'. , KeyId: D91BB213745BA7ADFE215941FCE6CBC7A4E8ED43
Microsoft.IdentityModel.Tokens.X509SecurityKey, KeyId: '57DCF3954E7F9A7353D17824A34701A937E8B35B', InternalId: 'V9zzlU5_mnNT0Xgko0cBqTfos1s'. , KeyId: 57DCF3954E7F9A7353D17824A34701A937E8B35B
Microsoft.IdentityModel.Tokens.X509SecurityKey, KeyId: '6C26B69AFABF63AED5EDF8B830DC6F26463E0854', InternalId: 'bCa2mvq_Y67V7fi4MNxvJkY-CFQ'. , KeyId: 6C26B69AFABF63AED5EDF8B830DC6F26463E0854
Microsoft.IdentityModel.Tokens.X509SecurityKey, KeyId: 'E1241293629705DCDE0B599F078EAB5F505E6E04', InternalId: '4SQSk2KXBdzeC1mfB46rX1BebgQ'. , KeyId: E1241293629705DCDE0B599F078EAB5F505E6E04
(this list goes on and on... but figured you didn't need to see it all)
'. Number of keys in TokenValidationParameters: '108'.
Number of keys in Configuration: '0'.
Exceptions caught:
'[PII of type 'System.String' is hidden. For more details, see https://aka.ms/IdentityModel/PII.]'.
token: '[PII of type 'System.IdentityModel.Tokens.Jwt.JwtSecurityToken' is hidden. For more details, see https://aka.ms/IdentityModel/PII.]'. See https://aka.ms/IDX10503 for details.