NetXMS Support Forum

netxms is very useful tool, but it's also silly on other hand.

I was able to log in, and it was working fine.

Once i rebooted my commits stoped working (connection refused)

Check your services and make sure they are set to start; check server log for errors, etc.  

but if i re-install,  than works well.

That tells me that something isn't right with the app itself

can i get any thoughts pls

Pls give some details. 
Is you NetXMS installed on Windows or Linux?
Do you use WEB UI? Have you tried the desktop UI?