1. Go to C:\Program Files (x86)\Kaspersky Lab\Network Agent\klcsnagtgui.exe
Right click and run as administrator .

2. At Network Agent Window. Click on Run klnagchk utility .

3. Now check Network Agent status and it connection to Server.
Note :
If there is no Network agent service running, the utility will terminate. If the Network agent service is running, the utility will output connection statistics:
- Ping count – number of attempts to connect to the Administration server
- Succ. pings – number of successful connection attempts
- Sync count – number of synchronization attempts
- Succ. syncs – number of successful synchronization attempts
- Last ping – last connection date and time

Done .
For more information, please go to this link : https://support.kaspersky.com/us/9292