Error starting SQL Server in single user mode

Hello,

I have SQL Server 2014 and I try to start SQL Server in single user mode by executing the next command:

sqlservr.exe -m -c -s YOGAARNE\SQLEXPRESS

This gives the next error:

'Your SQL Server Installation is either corrupt or has been tampered with ( Error: Instance name exceeds maximum length)'

How do I solve this error?

Regards,

Arne
adiemeerAsked:
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HuaMin ChenProblem resolverCommented:
Can you follow this procedure below

http://www.sqlservercentral.com/blogs/mssqlfun/2014/09/04/how-to-start-sql-server-in-single-user-mode-/

and try to do it?

BTW, are you able to start your Sql server DB ever?
Vikas GargAssociate Principal EngineerCommented:
HI

This is either done using the net start/stop command

The syntax for a net start/stop command is

NET START <SERVICE_NAME> <Parameters>

The method for the same shown in this LINK

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Vitor MontalvãoMSSQL Senior EngineerCommented:
'Your SQL Server Installation is either corrupt or has been tampered with ( Error: Instance name exceeds maximum length)'
Are you trying to start it in single user mode because you had a problem with it? If so, what's the problem?
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adiemeerAuthor Commented:
@Vitor: yes I have a problem with SQL Server. The solution is described at this page: http://www.projectenvision.com/blog/Add-User-to-Sysadmin-Role-Without-Having-Permissions. This works fine for a colleague of me, but I get the error at the moment I want to start in single user mode.
Vitor MontalvãoMSSQL Senior EngineerCommented:
This works fine for a colleague of me,
Isn't working on the same SQL Server instance as you, right?
Can you start SQL Server instance in multiple user mode? If so, you can just disabled all user logins so no one can connect but you.
adiemeerAuthor Commented:
Thanks! This solution works for me!
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