Policy
MaxConcurrentUsers
This policy setting configures the maximum number of users able to concurrently perform remote shell operations on the system. The value can be any number from 1 to 100. If you enable this policy setting, the new shell connections are rejected if they exceed the specified limit. If you disable or do not configure this policy setting, the default number is five users.
f0a623d54aa2 MaxConcurrentUsers Registry
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HKLM\Software\Policies\Microsoft\Windows\WinRM\Service\WinRS\MaxConcurrentUsers Policy notes
This policy setting configures the maximum number of users able to concurrently perform remote shell operations on the system. The value can be any number from 1 to 100. If you enable this policy setting, the new shell connections are rejected if they exceed the specified limit. If you disable or do not configure this policy setting, the default number is five users.