No, you don't have to go anywhere to activate it, of course. The host should run upon installation and even restart is not needed in most cases.
This looks like antivirus software activity. Before you reinstall the Host, could you please add the Host installation path to your AVG exceptions list. The path is C:\Program Files\Remote Utilities - Host\* . Asterisk means "any file within the folder". If you have a 64-bit system your path will be C:\Program Files(x86)\Remote Utilities - Host\*
Looks like the Host service won't start for some reason or installation got corrupted somehow. Could you tell me what the operating system is on the Host PC and which product version you use (stable or beta)?
You might also want to try to complete wipe the Host installation and re-install from scratch. See this documentation page. Note that if you are using the current beta version the registry key with Host settings is located here HKEY_LOCAL_MACHINE\SOFTWARE\Usoris\
Ok, fixed, I had to add users who is enabled to login. And now question - despite of security mode - viewer always connects to currently active user account... Is there any way to connect viewer to specific user account? Not to the active one?
If there multiple terminal sessions (i.e. there is a terminal server running on the remote PC) then you can switch to a specific session. However, even in that case you'll still connect to the console session first and have to use a terminal session switch icon on the Full Control mode toolbar.
Please, note that it's only the existing terminal sessions that you can connect to. Remote Utilities cannot create terminal sessions for you, i.e. it cannot act as a terminal server itself.
If you can connect from another Viewer then the Host is ok, and the issue may have been on the Viewer side, not the Host's.
In this case a corporate/perimeter firewall is often to blame. You might have certain outbound ports blocked on the corporate firewall level. You need to make sure they are open and that our relay server is accessible. This documentation can help:
Sorry for the inconvenience. We are planning on updating the mobile client in a few months - it will be completely revamped, with new full-fledged address book, a new connection mode (at least Power Control) and a few more important features. We will make sure that the cursor issue is also fixed.
Don't hesitate to ask me if you have other questions.