Dear friend!
I don't understand what you mean. Do you use an AP to establish a wireless connection between the NCE server and client? If yes, the NCE server supports the login mode on the web page, and the alarm is irrelevant to whether you log in to NCE.
If the communication between the devices managed by NCE is interrupted for a short period of time (within a few seconds), this cannot be detected.
This alarm is generated when the communication between devices managed by NCE is interrupted for a long time. If no alarm is found, confirm that no alarm masking is performed. Synchronize alarms.
Thanks!