I had the same issue - my fix:
$acl = Get-Acl "C:\Users\<user>\.azure-kubelogin\kubelogin.exe"
$permission = "Everyone","ReadAndExecute","Allow"
$accessRule = New-Object System.Security.AccessControl.FileSystemAccessRule $permission
$acl.SetAccessRule($accessRule)
Set-Acl "C:\Users\<user>\.azure-kubelogin\kubelogin.exe" $ac
Everything worked after that