Cannot connect to SQL Server 2005

I am receiving this error while trying to connect to a SQL Server 2005
instance.
"An error has occurred while establishing a connection to the server. When
connecting to SQL Server 2005, this failure may be caused by the fact that
under the default settings SQL Server does not allow remote connections.
(provider: SQL Network Interfaces, error: 26 - Error Locating Server/Instance
Specified) (Microsoft SQL Server, Error: -1)"
The SQL Server does allow remote connections - why would this error be
coming up?
This is a very general error meaning the tool can't find a server instance
of that name. Other possible reasons are that the SQL Server Browser Service
is not running, or a firewall is blocking you.
Try running through the short connectivity tutorial at
http://msdn2.microsoft.com/en-us/library/ms345318.aspx
Rick Byham (MSFT)
This posting is provided "AS IS" with no warranties, and confers no rights.
"CRush" <CRush@.discussions.microsoft.com> wrote in message
news:90D37EAC-DBE0-449D-A9C0-D39033A7CB91@.microsoft.com...
>I am receiving this error while trying to connect to a SQL Server 2005
> instance.
> "An error has occurred while establishing a connection to the server.
> When
> connecting to SQL Server 2005, this failure may be caused by the fact that
> under the default settings SQL Server does not allow remote connections.
> (provider: SQL Network Interfaces, error: 26 - Error Locating
> Server/Instance
> Specified) (Microsoft SQL Server, Error: -1)"
> The SQL Server does allow remote connections - why would this error be
> coming up?
>
|||Rick,
This is a problem that occurs sporadically during the day. SQL Server
Browser is running. I am running SQL Server on a Virtural Server. I have
noticed today that when the problem occurs the cpu for the Virtual Server and
the Stand alone Server are both running at 100%. We currently have 4 Virtual
Servers running with 3 of them running SQL Server 2005 on the same Stand
alone Server.
"Rick Byham, (MSFT)" wrote:

> This is a very general error meaning the tool can't find a server instance
> of that name. Other possible reasons are that the SQL Server Browser Service
> is not running, or a firewall is blocking you.
> Try running through the short connectivity tutorial at
> http://msdn2.microsoft.com/en-us/library/ms345318.aspx
> --
> Rick Byham (MSFT)
> This posting is provided "AS IS" with no warranties, and confers no rights.
> "CRush" <CRush@.discussions.microsoft.com> wrote in message
> news:90D37EAC-DBE0-449D-A9C0-D39033A7CB91@.microsoft.com...
>
|||Your error is probably a symptom of the 100% CPU. The "An error has occurred
while establishing a connection ..." error is very general and indicates
that the client tools can't find the SQL Server that you are asking for. In
this case, it could be that the network isn't responding because of the 100%
CPU, or the SQL Server Browser Service can't respond because of the 100%
CPU. Of course this just moves the question to why do you have 100% CPU
usage. Solve the 100% CPU, and I bet the connectivity problem will go away.
Rick Byham (MSFT)
This posting is provided "AS IS" with no warranties, and confers no rights.
"CRush" <CRush@.discussions.microsoft.com> wrote in message
news:DDB7A36A-3B49-49D4-81DF-4C1FEF24ED21@.microsoft.com...[vbcol=seagreen]
> Rick,
> This is a problem that occurs sporadically during the day. SQL Server
> Browser is running. I am running SQL Server on a Virtural Server. I have
> noticed today that when the problem occurs the cpu for the Virtual Server
> and
> the Stand alone Server are both running at 100%. We currently have 4
> Virtual
> Servers running with 3 of them running SQL Server 2005 on the same Stand
> alone Server.
> "Rick Byham, (MSFT)" wrote:
|||I agree. See if Microsoft OneCare Defender is chewing up all of your
processor time... ;)
____________________________________
William (Bill) Vaughn
Author, Mentor, Consultant
Microsoft MVP
INETA Speaker
www.betav.com/blog/billva
www.betav.com
Please reply only to the newsgroup so that others can benefit.
This posting is provided "AS IS" with no warranties, and confers no rights.
__________________________________
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and Hitchhiker's Guide to SQL Server 2005 Compact Edition (EBook)
------
"Rick Byham, (MSFT)" <rickbyh@.REDMOND.CORP.MICROSOFT.COM> wrote in message
news:70B1ACC0-026C-46AF-B85F-E8CCECC56041@.microsoft.com...
> Your error is probably a symptom of the 100% CPU. The "An error has
> occurred while establishing a connection ..." error is very general and
> indicates that the client tools can't find the SQL Server that you are
> asking for. In this case, it could be that the network isn't responding
> because of the 100% CPU, or the SQL Server Browser Service can't respond
> because of the 100% CPU. Of course this just moves the question to why do
> you have 100% CPU usage. Solve the 100% CPU, and I bet the connectivity
> problem will go away.
> --
> Rick Byham (MSFT)
> This posting is provided "AS IS" with no warranties, and confers no
> rights.
> "CRush" <CRush@.discussions.microsoft.com> wrote in message
> news:DDB7A36A-3B49-49D4-81DF-4C1FEF24ED21@.microsoft.com...
>