Have you tried turning off the wndows firewall to see if it is blocking you? Find the network icon in the lower right corner of the screen, right click and choose 'Change Windows Firewall Settings". Then disable the firewall and see if it starts working.
There are many possible reasons for EID-2199:
-incorrect user/pass entered
-firewall blocking some ports/sessions between your pc and the NE
-keyboard layout (country setting usually) incorrect
You can isolate the issue further by:
-trying different PC's at the same location. If it is happening on other PC's, it could be a user/pass issue or firewall issue.
-try different NE's. Verify user/pass on NE's regardless of outcome, but you can make sure user/pass are the same on all NE's if the error is only on a certain NE. Maybe one NE does not have the correct user/pass created or not updated?
-Take a laptop that has the issue and go to the site and connect directly to the NE. If it works, then it is a firewall or DCN issue.
-Verify your keyboard layout if it happens only on your pc regardless of the location.
If you still have the issue, then open a TAC case.