I upgraded to 4.3 and my application is giving this error multiple times a minute
The Everleap hosting company pointed this out regarding the 4.3 app
There's an application-level warning that's recorded extremely frequently though (multiple times) per minute which I think may be negatively impacting your site:
Category: Microsoft.AspNetCore.Session.SessionMiddleware
EventId: 7
RequestId: 80000072-0001-e200-b63f-84710c7967bb
RequestPath: /mini-profiler-resources/results
SpanId: |f1ecf601-48449a3c971ccf70.
TraceId: f1ecf601-48449a3c971ccf70
ParentId:
Error unprotecting the session cookie.
Exception:
System.Security.Cryptography.CryptographicException: The key {ff712356-7aeb-42a4-9944-16500865c02f} was not found in the key ring.
at Microsoft.AspNetCore.DataProtection.KeyManagement.KeyRingBasedDataProtector.UnprotectCore(Byte[] protectedData, Boolean allowOperationsOnRevokedKeys, UnprotectStatus& status)
at Microsoft.AspNetCore.DataProtection.KeyManagement.KeyRingBasedDataProtector.DangerousUnprotect(Byte[] protectedData, Boolean ignoreRevocationErrors, Boolean& requiresMigration, Boolean& wasRevoked)
at Microsoft.AspNetCore.DataProtection.KeyManagement.KeyRingBasedDataProtector.Unprotect(Byte[] protectedData)
at Microsoft.AspNetCore.Session.CookieProtection.Unprotect(IDataProtector protector, String protectedText, ILogger logger)
Do you have something enabled that might trigger this warning? It looks like it's happening on every HTTP request -- there are tons and tons of these on the new server and it's something that I had noticed yesterday.