I’ve suddenly started getting this error every minute in my logs. Anyone else suffering this (7.2.6)?
2015-06-18 10:52:47,234 [20] ERROR Umbraco.Web.Mvc.AdminTokenAuthorizeAttribute [(null)] - [T20/D9] Failed to format passed in token value
System.Security.Cryptography.CryptographicException: Error occurred during a cryptographic operation.
at System.Web.Security.Cryptography.HomogenizingCryptoServiceWrapper.HomogenizeErrors(Func`2 func, Byte input)
at System.Web.Security.FormsAuthentication.Decrypt(String encryptedTicket)
at Umbraco.Core.StringExtensions.DecryptWithMachineKey(String value)
at Umbraco.Web.Mvc.AdminTokenAuthorizeAttribute.AuthorizeCore(HttpContextBase httpContext)
This is a companion discussion topic for the original entry at https://our.umbraco.com/forum/66643-umbracowebmvcadmintokenauthorizeattribute-error-every-minute