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#help-with-umbraco
An exception was thrown while deserializing the token.
# help-with-umbraco
n

nl_05

02/07/2024, 3:18 PM
Does anyone know why I'm getting this error in the back office log viewer ? how can i fix this ? Microsoft.AspNetCore.Antiforgery.AntiforgeryValidationException: The antiforgery token could not be decrypted. ---> System.Security.Cryptography.CryptographicException: The key {a773867b-d0d3-4648-8378-2042cd1895c7} was not found in the key ring. For more information go to http://aka.ms/dataprotectionwarning at Microsoft.AspNetCore.DataProtection.KeyManagement.KeyRingBasedDataProtector.UnprotectCore(Byte[] protectedData, Boolean allowOperationsOnRevokedKeys, UnprotectStatus& status) at Microsoft.AspNetCore.DataProtection.KeyManagement.KeyRingBasedDataProtector.Unprotect(Byte[] protectedData) at Microsoft.AspNetCore.Antiforgery.DefaultAntiforgeryTokenSerializer.Deserialize(String serializedToken) --- End of inner exception stack trace --- at Microsoft.AspNetCore.Antiforgery.DefaultAntiforgeryTokenSerializer.Deserialize(String serializedToken) at Microsoft.AspNetCore.Antiforgery.DefaultAntiforgery.GetCookieTokenDoesNotThrow(HttpContext httpContext)