NTP Server Sync error on AX-11000

[Kashif Tasneem]

Hi. Since last night I am getting NTP Server Sync error. I haven't changed anything recently. The error is:

"* Reminder: The system time has not been synchronized with an NTP server."

Time showing in System log is:

"Sat, May 05 10:18:02 2018"

I have tried different NTP servers and pinged them through router interface and all are returning fine.

Any ideas what could be the problem?

 

[L&LD]

Did you reboot the router yet?

 

[Kashif Tasneem]

Did you reboot the router yet?

Yup each time after changing server address.