Do not allow COM port redirection

This policy setting specifies whether to prevent the redirection of data to client COM ports from the remote computer in a Remote Desktop Services session. You can use this setting to prevent users from redirecting data to COM port peripherals or mapping local COM ports while they are logged on to a Remote Desktop Services session. By default, Remote Desktop Services allows this COM port redirection. If you enable this policy setting, users cannot redirect server data to the local COM port. If you disable this policy setting, Remote Desktop Services always allows COM port redirection. If you do not configure this policy setting, COM port redirection is not specified at the Group Policy level.

Policy Details

Policy Name

TS_CLIENT_COM

Registry Key

SOFTWARE\Policies\Microsoft\Windows NT\Terminal Services

Value Name

fDisableCcm

Supported On

At least Windows Server 2003 operating systems or Windows XP Professional

OMA-URI (CSP)

ADMX_TerminalServer/TS_CLIENT_COM

OS Build Version:10.0.22000, 10.0.19043.1202, 10.0.19042.1202, 10.0.19041.1202

CSP Version:10.0

Conflict Resolution:LastWrite

Allowed Editions:

EnterpriseEnterprise NProfessionalProfessional NEnterprise EvaluationEnterprise N EvaluationEducationEducation NEnterprise SEnterprise S NEnterprise S EvaluationEnterprise S N EvaluationHolographic BusinessPro Single LanguagePro ChinaPro WorkstationPro Workstation NPro For EducationPro For Education NEnterprisegEnterprisegnServerrdshIotenterpriseIotenterprisesCloudeditionnCloudeditionIotenterpriseskIotenterpriseseval

Policy State Values

Enabled: 1

Disabled: 0

Available Languages

en-us