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Port 1434 blocked?

Nickel Super Contributor
Posts: 843
Country: United States

Port 1434 blocked?

server 2003 r2 sp2

win7 and xp workstations (not every one, but still a couple are problematic).

IT consultant says all ports are open on server firewall and symantec endpoint.  No firewall on workstations.  He has also checked/ruled out DNS issue.

 

Error: The "servername" computer could not be reached because the port "1434" may be blocked.  opening the port or reconfiguring your firewall settings may resolve this issue.

 

A few other workstations seem to experience this problem intermittently.  I was wondering if that might be due to network latency.

 

Any ideas/suggestions?

Rita Kogstad
RKA Associates
Stamford, CT
Nickel Super Contributor
Posts: 397
Country: USA

Re: Port 1434 blocked?

[ Edited ]

This can occur when the SQL Server Browser service is not started. (ACT! Server)

 

Start button - Run - services.msc  (Enter)

 

Scroll down and right click on SQL Server Browser (Start)

 

 

Scroll down and right click on SQL Server (ACT7)   (Start - Restart)

 

Test again.

 

Best Regards

Nickel Super Contributor
Posts: 843
Country: United States

Re: Port 1434 blocked?

Thanks, Juan Carlos.

I did try that.

Eventually they got past the error message/got the db open, but I'd like to know why it threw the error.

Rita Kogstad
RKA Associates
Stamford, CT
Bronze Elite Contributor
Posts: 2,117
Country: United_Kingdom

Re: Port 1434 blocked?

Like Juan said port 1434 is used by the SQL Browser. If the service is up and running normally, it would come down to something blocking UDP (not TCP) 1434. You can run Netstat from the cmd prompt on the server:

 

Start -> Run
cmd 

netstat -a

 netstat -a will show all open ports on that machine (TCP and UDP).

Vivek Gargav
Caldere Associates Ltd.
www.caldere.com
vgargav@caldere.com
My Blog
Copper Elite Contributor
Posts: 105
Country: New Zealand

Re: Port 1434 blocked?

This procedure may have to be done on the PC storing the master database if operating in a Windows network.
Thanks
Stephen Buckland
stephenbuckland@gmail.com