Powershell: Cannot create credentials file with for dot-slash user - powershell

Question

I am trying to run a remote command to a computer which has a ".\".
When I am trying the credentials using get-credentials and storing them to a file, I am not allowed to do.
When I try to do using
$Username = -join($env:COMPUTERNAME,'\<user_name>')
$Password = '<password>'
$pass = ConvertTo-SecureString -AsPlainText $Password -Force
$Cred = New-Object System.Management.Automation.PSCredential -ArgumentList $Username,$pass
Invoke-Command -ComputerName <computer_name> -Authentication Kerberos -Credential $Cred {Get-WmiObject -Class Win32_LogicalDisk}
I get the following error
Connecting to remote server failed with the following error message : WinRM cannot process the request. The following error occured while using Kerberos authenticati
on: There are currently no logon servers available to service the logon request.
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.
+ CategoryInfo : OpenError: (:) [], PSRemotingTransportException
+ FullyQualifiedErrorId : PSSessionStateBroken
But when I do a mstsc and use the same credentials it works.
Please let me know the way around.

Answer 1

$env:COMPUTERNAME is your computer name!
Imagine I'm using ComputerA and wantning to connect to ComputerB as a local user on ComputerB.
Your code, as it currently stands is trying to connect as ComputerA\Username, which doesn't exist on ComputerB!

Answer 2

Can you try passing the username in below syntax?
$Username = -join('Localhost','\<user_name>')