NAV 2009 - three tiers - get problem after change Server IP

waynenl

Dear experts

I have a problem of the system.
My System is:
- 1 sql server
- 1 NAV Service Server
- Client

The System worked well, but the IT department change the IP of NAV Service Server. Then i got the problem:
- Client cannot connect, it shows error :"Cannot connect to SQL Server", like error of wrong SPNs or delegation setup.

Try to Solve:
- I try to open RTC from NAV Service Server -> It's ok
- Try to delete and insert SPNs again, remove delegation and add it again -> still don't solve.
- Try to create new windows service with another port -> cannot connect too.
- Using Best Practice Analysis -> don't show any errors.

Change IP Address of server then system is death. Please help me to solve it.

Many Thanks

thegunzo

Are you using full domain name of the server og just the computer name ?
Have you made sure that the DNS is correct and flushed the cache on both server and client machines ?

waynenl

Thank for your reply.

I use Full Domain, i think it do not flush the cache.
I do nothing on this system and after one day it runs well again without config.

So how could i flush the cache right now for the server?