Microsoft SQL Express 2008 SQL Browser Will Not Start

I'm having an issue with SQL Express 2008 R2 on Windows 7 64bit machines. The SQL Server Browser service will not start, giving the following two errors in Event Viewer. I've done any number of things to troubleshoot, including a clean boot, removing anti-virus, running a secondary scan with another anti-malware utility, completely un-installing and re-installing SQL and the instance, and no avail. Can anyone help?

The SQL Server Browser service port is unavailable for listening, or invalid.

The SQL Server Browser service was unable to establish SQL instance and connectivity discovery.
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George ZarifCommented:
I had this issue before and the only way i was able to fix it is I backup up my databases and then re-install SQL with a different name of the SQL and then attach the database. Once I confirmed everything is working fine then I uninstalled the broken one so it wouldn't get confusing.
sc456aAuthor Commented:
I've already done that as mentioned in the OP.
Do you have an older instance of SQL Express or MSDE on the machine?
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sc456aAuthor Commented:
There was, but I manually removed it. No firewall enabled, either.
Run this from a command prompt first to locate the process id bound to UDP 1434 ->

netstat -aon -p UDP

Look for things bound to 1434

UDP *:* 1234

Next look up the PID in Task Manager to see what process this is.
sc456aAuthor Commented:
Nothing else is bound to 1434.
Try stop the SQL Services, start SQL Browser, then restart the SQL Services.
sc456aAuthor Commented:
Same error.
What account is used to run SQL Browser?  Local Service/system?

Try switching to a domain account or vice versa
Try starting SQL browser as a console application to get more details

sqlbrowser.exe -c

What earlier version of SQL did you remove from the workstations? SQL 2000?

If it's SQL 2000, check registry and rename key

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\MSSQLServer\CurrentVersion to CurrentVersion_Old


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Vitor MontalvãoMSSQL Senior EngineerCommented:
Go to SQL Server Configuration Manager and in SQL Server Network Configuration select the instance name and chose TCP/IP protocol (should be enabled) and check which port is using. You can change it to the default port 1433.
sc456aAuthor Commented:
Ray: Localservice is the account. Switching to domain admin had no effect. That command helped me get a little more info which has actually led to the solution!

When I ran sqlbrowser.exe -c I got the following error: "failed starting SSRP redirection services -- shutting down"

This led me to this article:

Which led me to deleting some old instance items in the registry under HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Microsoft SQL

Which resolved the problem! I didn't have to reboot or restart SQL. Once I deleted the old instances in that registry path I was able to start the SQL Browser service normally. Thanks, Ray!
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Microsoft SQL Server 2008

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