The attempt to connect to http://yourserver/PowerShell using “Kerberos” authentication failed: Connecting to remote server failed with the following error message : WinRM cannot process the request.

The following error occurred while attempting to connect to the specified Exchange server ‘yourserver.domain.com’:The attempt to connect to http://yourserver.domain.com/PowerShell using “Kerberos” authentication failed: Connecting to remote server failed with the following error message : WinRM cannot process the request. The following error occured while using Kerberos authentication: The network path was not found.  Possible causes are:  -The user name or password specified are invalid.  -Kerberos is used when no authentication method and no user name are specified.  -Kerberos accepts domain user names, but not local user names.  -The Service Principal Name (SPN) for the remote computer name and port does not exist.  -The client and remote computers are in different domains and there is no trust between the two domains. After checking for the above issues, try the following:  -Check the Event Viewer for events related to authentication.  -Change the authentication method; add the destination computer to the WinRM TrustedHosts configuration setting or use HTTPS transport. Note that computers in the TrustedHosts list might not be authenticated.   -For more information about WinRM configuration, run the following command: winrm help config. For more information, see the about_Remote_Troubleshooting Help topic.

The solution is to first export and then delete

HKCUSoftwareMicrosoftExchangeServerv14AdminToolsNodeStructureSettings (REG_BINARY key) registry key.

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