Accesscollab uses a modified version of ghui compared to the Met Office distribution, which means that there is a different means of starting the ui server.
Locate the pid of startServer & kill it
$ ps U access | grep startServer 22172 ? Sl 0:03 tclsh /projects/access/UI/ghui3.0/admin/startServer.tcl /projects/access/UI/ghui3.0 PRIMARY /projects/access/DBSE umuix $ kill 22172
The server should be automatically checked & restarted with a cron job every 10 min. It can be manually restarted with
$ ~access/UI/ghui3.0/bin/ghui_server umuix PRIMARY
Or using the admin panel
<span style="font-size: 13.3333px;">$ ~access/scripts/umuix_admin</span>