Open (Ctrl + Shift + Esc), find the Smart PSS process, and click End Task before relaunching the application.
"Security One to all units, we have a NetSDK lockout on the East Gate. Hard reset the local NVR manually. Do not, I repeat, do not open the gate for the transport until we have visual confirmation of the driver."
or check the user profile settings in the recorder's "Accounts" menu to ensure "Playback" permissions are enabled. Network Path Obstructions