Login failed - Error Number: 18456 - Severity: 14 - State: 1

Hi.
After re-installing Windows Vista on my PC, I can no longer log on to my
local SQL Server 2005 (SP2) (even though my account name is the same for
Vista). I can not even connect with a new query, so I can not update user
information or anything like that. It gives me this error:
Login failed for user 'Thomas-PC\Thomas'. (.Net SqlClient Data Provider)
For help, click:
[url]http://go.microsoft.com/fwlink?ProdName=Microsoft+SQL+Server&EvtSrc=MSSQLS erver&EvtID=18456&LinkId=20476[/url]
Server Name: thomas-pc
Error Number: 18456
Severity: 14
State: 1
Line Number: 65536
Program Location:
at System.Data.SqlClient.SqlInternalConnection.OnErro r(SqlException
exception, Boolean breakConnection)
at
System.Data.SqlClient.TdsParser.ThrowExceptionAndW arning(TdsParserStateObject
stateObj)
at System.Data.SqlClient.TdsParser.Run(RunBehavior runBehavior,
SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet
bulkCopyHandler, TdsParserStateObject stateObj)
at System.Data.SqlClient.SqlInternalConnectionTds.Com pleteLogin(Boolean
enlistOK)
at
System.Data.SqlClient.SqlInternalConnectionTds.Att emptOneLogin(ServerInfo
serverInfo, String newPassword, Boolean ignoreSniOpenTimeout, Int64
timerExpire, SqlConnection owningObject)
at System.Data.SqlClient.SqlInternalConnectionTds.Log inNoFailover(String
host, String newPassword, Boolean redirectedUserInstance, SqlConnection
owningObject, SqlConnectionString connectionOptions, Int64 timerStart)
at
System.Data.SqlClient.SqlInternalConnectionTds.Ope nLoginEnlist(SqlConnection
owningObject, SqlConnectionString connectionOptions, String newPassword,
Boolean redirectedUserInstance)
at
System.Data.SqlClient.SqlInternalConnectionTds..ct or(DbConnectionPoolIdentity
identity, SqlConnectionString connectionOptions, Object providerInfo, String
newPassword, SqlConnection owningObject, Boolean redirectedUserInstance)
at
System.Data.SqlClient.SqlConnectionFactory.CreateC onnection(DbConnectionOptions
options, Object poolGroupProviderInfo, DbConnectionPool pool, DbConnection
owningConnection)
at
System.Data.ProviderBase.DbConnectionFactory.Creat eNonPooledConnection(DbConnection owningConnection, DbConnectionPoolGroup poolGroup)
at
System.Data.ProviderBase.DbConnectionFactory.GetCo nnection(DbConnection
owningConnection)
at
System.Data.ProviderBase.DbConnectionClosed.OpenCo nnection(DbConnection
outerConnection, DbConnectionFactory connectionFactory)
at System.Data.SqlClient.SqlConnection.Open()
at
Microsoft.SqlServer.Management.UI.ConnectionDlg.Ne wRegisteredServerForm.testConnection_Click(Object sender, EventArgs e)
Unfortunately the link provided above for more help takes me to a page that
does not exist.
I did try to uninstall the SQL Server 2005 and re-install it again but
without any difference.
I can connect to servers on other servers, but as I mentioned not my local
SQL server.
Thanks for your advise/help,
Thomas
Can you connect if you launch SSMS with "run as Administrator"? If so, add
your Windows login to the sysadmin role so that you don't need to run with
elevated privileges , except when managing services.
Hope this helps.
Dan Guzman
SQL Server MVP
"Thomas Vang" <Thomas Vang@.discussions.microsoft.com> wrote in message
news:6DD3607B-2A9B-4C69-BBBD-61ADA479D211@.microsoft.com...
> Hi.
> After re-installing Windows Vista on my PC, I can no longer log on to my
> local SQL Server 2005 (SP2) (even though my account name is the same for
> Vista). I can not even connect with a new query, so I can not update user
> information or anything like that. It gives me this error:
> Login failed for user 'Thomas-PC\Thomas'. (.Net SqlClient Data Provider)
> --
> For help, click:
> [url]http://go.microsoft.com/fwlink?ProdName=Microsoft+SQL+Server&EvtSrc=MSSQLS erver&EvtID=18456&LinkId=20476[/url]
> --
> Server Name: thomas-pc
> Error Number: 18456
> Severity: 14
> State: 1
> Line Number: 65536
> --
> Program Location:
> at System.Data.SqlClient.SqlInternalConnection.OnErro r(SqlException
> exception, Boolean breakConnection)
> at
> System.Data.SqlClient.TdsParser.ThrowExceptionAndW arning(TdsParserStateObject
> stateObj)
> at System.Data.SqlClient.TdsParser.Run(RunBehavior runBehavior,
> SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet
> bulkCopyHandler, TdsParserStateObject stateObj)
> at System.Data.SqlClient.SqlInternalConnectionTds.Com pleteLogin(Boolean
> enlistOK)
> at
> System.Data.SqlClient.SqlInternalConnectionTds.Att emptOneLogin(ServerInfo
> serverInfo, String newPassword, Boolean ignoreSniOpenTimeout, Int64
> timerExpire, SqlConnection owningObject)
> at System.Data.SqlClient.SqlInternalConnectionTds.Log inNoFailover(String
> host, String newPassword, Boolean redirectedUserInstance, SqlConnection
> owningObject, SqlConnectionString connectionOptions, Int64 timerStart)
> at
> System.Data.SqlClient.SqlInternalConnectionTds.Ope nLoginEnlist(SqlConnection
> owningObject, SqlConnectionString connectionOptions, String newPassword,
> Boolean redirectedUserInstance)
> at
> System.Data.SqlClient.SqlInternalConnectionTds..ct or(DbConnectionPoolIdentity
> identity, SqlConnectionString connectionOptions, Object providerInfo,
> String
> newPassword, SqlConnection owningObject, Boolean redirectedUserInstance)
> at
> System.Data.SqlClient.SqlConnectionFactory.CreateC onnection(DbConnectionOptions
> options, Object poolGroupProviderInfo, DbConnectionPool pool, DbConnection
> owningConnection)
> at
> System.Data.ProviderBase.DbConnectionFactory.Creat eNonPooledConnection(DbConnection
> owningConnection, DbConnectionPoolGroup poolGroup)
> at
> System.Data.ProviderBase.DbConnectionFactory.GetCo nnection(DbConnection
> owningConnection)
> at
> System.Data.ProviderBase.DbConnectionClosed.OpenCo nnection(DbConnection
> outerConnection, DbConnectionFactory connectionFactory)
> at System.Data.SqlClient.SqlConnection.Open()
> at
> Microsoft.SqlServer.Management.UI.ConnectionDlg.Ne wRegisteredServerForm.testConnection_Click(Object
> sender, EventArgs e)
> Unfortunately the link provided above for more help takes me to a page
> that
> does not exist.
> I did try to uninstall the SQL Server 2005 and re-install it again but
> without any difference.
> I can connect to servers on other servers, but as I mentioned not my local
> SQL server.
> Thanks for your advise/help,
> Thomas
|||Dan - You' da man !!! Thanks a lot. Yes, I could launch SSMS as
asministrator, and added my windows login and not everything's just fine.
I really appreciate your help and thank you once again.
Best regards and have a nice day,
Thomas
"Dan Guzman" wrote:

> Can you connect if you launch SSMS with "run as Administrator"? If so, add
> your Windows login to the sysadmin role so that you don't need to run with
> elevated privileges , except when managing services.
>
> --
> Hope this helps.
> Dan Guzman
> SQL Server MVP
> "Thomas Vang" <Thomas Vang@.discussions.microsoft.com> wrote in message
> news:6DD3607B-2A9B-4C69-BBBD-61ADA479D211@.microsoft.com...
>
|||I'm glad I was able to help you out, Thomas. IIRC, the SP2 install can also
add logins to the sysadmin role so you don't need to do it manually.
Hope this helps.
Dan Guzman
SQL Server MVP
"Thomas Vang" <ThomasVang@.discussions.microsoft.com> wrote in message
news:978F3942-1196-4598-865E-A7A68295A4CD@.microsoft.com...[vbcol=seagreen]
> Dan - You' da man !!! Thanks a lot. Yes, I could launch SSMS as
> asministrator, and added my windows login and not everything's just fine.
> I really appreciate your help and thank you once again.
> Best regards and have a nice day,
> Thomas
>
> "Dan Guzman" wrote: