StorageGRID PowerShell connection fails with authorize failed via HTTPS protocol 500

• NetApp StorageGRID
• StorageGRID PowerShell utility

When trying to run StorageGRID PowerShell utility with Get-Credential, it reports:

$Credential = Get-Credential
Connect-SgwServer -Name $Name -Credential $Credential -SkipCertificateCheck

----------------------------------------------------------------------------------

Connect-SgwServer : Login to /authorize failed via HTTPS protocol. Exception message: The remote server returned an error: (500) Internal Server Error.
 {
 "message":  {
                    "text":  "invalid byte sequence in UTF-8"
                },
    "code":  500,
    "status": "error",
    "responseTime":  "2025-11-27T15:54:05.314Z",
    "apiVersion":  "3.5",
    "data":  {
                 "type": "ArgumentError"
             }
}
At line:1 char:1
+ Connect-SgwServer -Name $Name -Credential $Credential -SkipCertificat ...
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : NotSpecified: (:) [Write-Error], WriteErrorException
    + FullyQualifiedErrorId : Microsoft.PowerShell.Commands.WriteErrorException,Connect-SgwServer