Preventing Token Validation Error

In certain circumstances, you may receive the following token validation error while attempting to view a file in the Brava plugin with IMS authentication enabled:

[SocketException (0x2746): An existing connection was forcibly closed by the remote host]
   System.Net.Sockets.Socket.EndReceive(IAsyncResult asyncResult) +8058794
   System.Net.Sockets.NetworkStream.EndRead(IAsyncResult asyncResult) +46

[IOException: Unable to read data from the transport connection: An existing connection was forcibly closed by the remote host.]
   System.Net.TlsStream.EndWrite(IAsyncResult asyncResult) +305
   System.Net.ConnectStream.WriteHeadersCallback(IAsyncResult ar) +167

[WebException: The underlying connection was closed: An unexpected error occurred on a send.]
   System.Net.HttpWebRequest.EndGetResponse(IAsyncResult asyncResult) +762
   System.Net.Http.HttpClientHandler.GetResponseCallback(IAsyncResult ar) +81

[HttpRequestException: An error occurred while sending the request.]

[AggregateException: One or more errors occurred.]
   System.IdentityModel.Tokens.SamlSecurityTokenHandler.ValidateToken(SecurityToken token) +1532
   System.IdentityModel.Services.TokenReceiver.AuthenticateToken(SecurityToken token, Boolean ensureBearerToken, String endpointUri) +141
   System.IdentityModel.Services.WSFederationAuthenticationModule.SignInWithResponseMessage(HttpRequestBase request) +687
   System.IdentityModel.Services.WSFederationAuthenticationModule.OnAuthenticateRequest(Object sender, EventArgs args) +485
   System.Web.SyncEventExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +142
   System.Web.HttpApplication.ExecuteStepImpl(IExecutionStep step) +75
   System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +93

To correct this, you must add or update the Windows registry entries with the following changes:

Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\.NETFramework\v4.0.30319 "SchUseStrongCrypto"=dword:00000001
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\.NETFramework\v4.0.30319] "SchUseStrongCrypto"=dword:00000001

Tip: If you save this content as a text file with a .reg file extension and then run it, Windows will automatically apply the changes to the Windows Registry.