To install the Resco Field Service Mobile App for Windows, go to: https://www.resco.net/support/downloads/
Select Windows (desktop):
Open the file:
Now, from the start menu, run Resco MobileCRM.
You will see below. Click Internal User:
Select Standard User and enter your credentials. Click Refresh:
It will show as Synchronizing:
When complete, you will then be able to use the mobile client: