Nav clients can't connect to server

Hello :

Yesterday, we uninstalled the antivirus from the NAV server (Navision 2009) and since then the Navision clients can not connect to the server. The network is working fine, I can ping to the server from the clients. I checked and all the services seem to started fine:

Database Server for Microsoft Dynamics NAV Classic service is running as well as all the network services.

Am I missing somethig? some service that is not running?

I can access the database from the server.

This is the error I get on the client side:


Please help !!!

Sounds like the anti virus added a fire wall.

Hi David:

You’re right, I temporarily turned the windows firewall off and it worked. Now I need to get back anf find out which ports should I open and activate the firewall again.
Thanks for your reply.

Hi Lorena,
If David’s answer helped you, then please click “This helped me”. This will “close” you question and mark it “resolved”. Thank you.