Hello,
We've deployed NXLog EE agents on numerous Windows servers, and we're facing a strange issue with just one agent.
It does not, and we're unable to get it to, show as online within the NXLog Manager. The agent's log states that it was able to successfully connect to the manager, but it's still showing as offline in the UI.

I have tried the following:

• Upgraded agent to the latest version
• Verified that the agent's logs said it was able to connect to the manager (10.40.1.90)
• Removed the agent from the manager interface
• Removed the agent off of the server
• Reinstalled the agent on the server, and reconfigured the certificate and managed.conf file
• Verified that it connected to the manager in the agent's logs

And even after all of that, the agent is still showing as offline on the manager's UI.

2022-09-23 16:22:40 WARNING [CORE|main] no functional input modules!
2022-09-23 16:22:40 INFO [CORE|main] nxlog-5.6.7727 (50b2a4353@REL_v5.6) started on Windows
2022-09-23 16:22:40 INFO [xm_admin|agent_management] connecting to 192.168.1.1:4041
2022-09-23 16:23:01 ERROR [xm_admin|agent_management] couldn't connect to 192.168.1.1:4041; A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond.
2022-09-23 16:23:01 INFO [xm_admin|agent_management] reconnecting to 192.168.1.1:4041 in 1 sec
2022-09-23 16:23:02 INFO [xm_admin|agent_management] connecting to 192.168.1.1:4041
2022-09-23 16:23:21 WARNING [CORE|main] stopping nxlog service
2022-09-23 16:23:21 WARNING [CORE|main] nxlog received a termination request signal, exiting...
2022-09-23 16:23:23 ERROR [xm_admin|agent_management] couldn't connect to 192.168.1.1:4041; A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond.
2022-09-23 16:23:23 INFO [xm_admin|agent_management] reconnecting to 192.168.1.1:4041 in 2 sec
2022-09-23 16:23:24 WARNING [CORE|main] no functional input modules!
2022-09-23 16:23:24 INFO [CORE|main] nxlog-5.6.7727 (50b2a4353@REL_v5.6) started on Windows
2022-09-23 16:23:24 INFO [xm_admin|agent_management] connecting to 10.40.1.90:4041                              <==== Here I set the manager's correct IP in managed.conf
2022-09-23 16:23:24 INFO [xm_admin|agent_management] tcp connection established with 10.40.1.90:4041
2022-09-23 16:28:24 WARNING [xm_admin|agent_management] did not receive requests from agent manager in the past 300 seconds, disconnecting
2022-09-23 16:28:24 INFO [xm_admin|agent_management] reconnecting to 10.40.1.90:4041 (last connection attempt was 300 sec ago)
2022-09-23 16:28:24 INFO [xm_admin|agent_management] connecting to 10.40.1.90:4041
2022-09-23 16:28:24 INFO [xm_admin|agent_management] tcp connection established with 10.40.1.90:4041           <==== Here it says it was able to connect to the manager just fine.

Does anyone have an idea as to what's going on here? Any help would be greatly appreciated!
Thanks!