Symptoms

Remote Desktop (RD) Gateway connections from standalone RDP clients on Mac/iOS/Android fail against a fresh APM installation. Following error is logged into /var/log/ltm: ... 01220001:3: TCL error: /Common/_sys_APM_Citrix_SmartAccess <HTTP_REQUEST> - ERR_NOT_SUPPORTED (line 1) invoked from within "HTTP::path"

Impact

Connection can't be established.

Conditions

- Fresh APM installation. - Standalone Mac/iOS/Android RDP client uses APM as RD Gateway.

Workaround

Disable "tmm.http.tcl.validation" variable: # tmsh modify sys db tmm.http.tcl.validation value disable

Fix Information

Remote Desktop (RD) Gateway connections from standalone RDP clients on Mac/iOS/Android are not failing anymore against fresh APM installation.

Behavior Change