Policy
Specify maximum number of remote shells per user
This policy setting configures the maximum number of concurrent shells any user can remotely open on the same system. Any number from 0 to 0x7FFFFFFF cand be set, where 0 means unlimited number of shells. If you enable this policy setting, the user cannot open new remote shells if the count exceeds the specified limit. If you disable or do not configure this policy setting, by default the limit is set to two remote shells per user.
9a96c2b9678b MaxShellsPerUser Registry
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HKLM\Software\Policies\Microsoft\Windows\WinRM\Service\WinRS\MaxShellsPerUser Policy notes
This policy setting configures the maximum number of concurrent shells any user can remotely open on the same system. Any number from 0 to 0x7FFFFFFF cand be set, where 0 means unlimited number of shells. If you enable this policy setting, the user cannot open new remote shells if the count exceeds the specified limit. If you disable or do not configure this policy setting, by default the limit is set to two remote shells per user.