There are two ways to find the Trend Micro OfficeScan Console URL, but in most cases the Trend Micro OfficeScan Console URL will be the default, which is:
https://server.domain:4343/officescan/console/html/cgi/cgiChkMasterPwd.exe
Obviously you have to change the server and domain to the Trend Micro OfficeScan server and your domain.
If you’re not using the default URL for the Trend Micro OfficeScan Console, then you can find your URL by either logging onto the Trend Micro OfficeScan server and finding a link to it in the start menu or looking in IIS to find out the URL and port hosting the service.