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sql server connect
group:Local connection to SQL Server 2005 Express fails
sql server connect:
Configuration -Configure SQL Server 2005 to allow remote connections http://support.microsoft.com/default.aspx?scid=kb;EN-US;914277 Configuration -Connect to SQL Express from "downlevel clients" http://blogs.msdn.com/sqlexpress/archive/2004/07/23/192044.aspx -- Arnie Rowland, Ph.D. Westwood Consulting, Inc Most good judgment comes from experience. Most experience comes from bad judgment. - Anonymous You can't help someone get up a hill without getting a little closer to the top yourself. - H. Norman Schwarzkopf [quoted text, click to view] "TAC" <tac@noemail.com> wrote in message news:GsCdnUMH0OMdb_DYnZ2dnUVZ_qOdnZ2d@giganews.com... >I just installed SQL Server 2005 Express edition, and created an app in >Visual Studio using C#. I get the following error when trying to connect: > > "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: Named Pipes Provider, error: 40 - Could not open a > connection to SQL Server)" > > I enabled Named Pipes but left TCP/IP disabled because this is a localhost > connection on the same computer. > > Here is the portion of the code I am using to connect: > > string dbCString = "Persist Security Info=False;Integrated > Security=true;Trusted_Connection=true;Initial > Catalog=MxData;server=(local)"; > > SqlConnection ThisConnection = new SqlConnection(dbCString); > > ThisConnection.Open(); > > > > Thanks in advance for any help. > > > > > > > > >
I just installed SQL Server 2005 Express edition, and created an app in
Visual Studio using C#. I get the following error when trying to connect: "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: Named Pipes Provider, error: 40 - Could not open a connection to SQL Server)" I enabled Named Pipes but left TCP/IP disabled because this is a localhost connection on the same computer. Here is the portion of the code I am using to connect: string dbCString = "Persist Security Info=False;Integrated Security=true;Trusted_Connection=true;Initial Catalog=MxData;server=(local)"; SqlConnection ThisConnection = new SqlConnection(dbCString); ThisConnection.Open(); Thanks in advance for any help.
This is a WAG:
You only need one of these two settings, perhaps having both is causing the connection string to cause failure. Integrated Security=true;Trusted_Connection=true; -- Arnie Rowland, Ph.D. Westwood Consulting, Inc Most good judgment comes from experience. Most experience comes from bad judgment. - Anonymous You can't help someone get up a hill without getting a little closer to the top yourself. - H. Norman Schwarzkopf [quoted text, click to view] "TAC" <tac@noemail.com> wrote in message news:ONCdne2ocahst_LYnZ2dnUVZ_u6dnZ2d@giganews.com... > Thanks for the info, but I did everything suggested in those two articles > and I still get the same connection error. I also tried various > alterations of my connection string with no success. Further research > indicates that this is a common problem, so I wonder why Microsoft ships > the Express edition along with Visual Studio 2005, but makes it so > difficult to connect. > > If you or anyone else has any other ideas, I would be most grateful. > > Thanks. > > > "Arnie Rowland" <arnie@1568.com> wrote in message > news:OOy2vm$EHHA.1784@TK2MSFTNGP06.phx.gbl... >> Perhaps these will help: >> >> Configuration -Configure SQL Server 2005 to allow remote connections >> http://support.microsoft.com/default.aspx?scid=kb;EN-US;914277 >> >> Configuration -Connect to SQL Express from "downlevel clients" >> http://blogs.msdn.com/sqlexpress/archive/2004/07/23/192044.aspx >> >> >> -- >> Arnie Rowland, Ph.D. >> Westwood Consulting, Inc >> >> Most good judgment comes from experience. >> Most experience comes from bad judgment. >> - Anonymous >> >> You can't help someone get up a hill without getting a little closer to >> the top yourself. >> - H. Norman Schwarzkopf >> >> >> "TAC" <tac@noemail.com> wrote in message >> news:GsCdnUMH0OMdb_DYnZ2dnUVZ_qOdnZ2d@giganews.com... >>>I just installed SQL Server 2005 Express edition, and created an app in >>>Visual Studio using C#. I get the following error when trying to >>>connect: >>> >>> "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: Named Pipes Provider, error: 40 - Could not open >>> a connection to SQL Server)" >>> >>> I enabled Named Pipes but left TCP/IP disabled because this is a >>> localhost connection on the same computer. >>> >>> Here is the portion of the code I am using to connect: >>> >>> string dbCString = "Persist Security Info=False;Integrated >>> Security=true;Trusted_Connection=true;Initial >>> Catalog=MxData;server=(local)"; >>> >>> SqlConnection ThisConnection = new SqlConnection(dbCString); >>> >>> ThisConnection.Open(); >>> >>> >>> >>> Thanks in advance for any help. >>> >>> >>> >>> >>> >>> >>> >>> >>> >> >> > >
Thanks for the info, but I did everything suggested in those two articles
and I still get the same connection error. I also tried various alterations of my connection string with no success. Further research indicates that this is a common problem, so I wonder why Microsoft ships the Express edition along with Visual Studio 2005, but makes it so difficult to connect. If you or anyone else has any other ideas, I would be most grateful. Thanks. [quoted text, click to view] "Arnie Rowland" <arnie@1568.com> wrote in message news:OOy2vm$EHHA.1784@TK2MSFTNGP06.phx.gbl... > Perhaps these will help: > > Configuration -Configure SQL Server 2005 to allow remote connections > http://support.microsoft.com/default.aspx?scid=kb;EN-US;914277 > > Configuration -Connect to SQL Express from "downlevel clients" > http://blogs.msdn.com/sqlexpress/archive/2004/07/23/192044.aspx > > > -- > Arnie Rowland, Ph.D. > Westwood Consulting, Inc > > Most good judgment comes from experience. > Most experience comes from bad judgment. > - Anonymous > > You can't help someone get up a hill without getting a little closer to > the top yourself. > - H. Norman Schwarzkopf > > > "TAC" <tac@noemail.com> wrote in message > news:GsCdnUMH0OMdb_DYnZ2dnUVZ_qOdnZ2d@giganews.com... >>I just installed SQL Server 2005 Express edition, and created an app in >>Visual Studio using C#. I get the following error when trying to connect: >> >> "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: Named Pipes Provider, error: 40 - Could not open >> a connection to SQL Server)" >> >> I enabled Named Pipes but left TCP/IP disabled because this is a >> localhost connection on the same computer. >> >> Here is the portion of the code I am using to connect: >> >> string dbCString = "Persist Security Info=False;Integrated >> Security=true;Trusted_Connection=true;Initial >> Catalog=MxData;server=(local)"; >> >> SqlConnection ThisConnection = new SqlConnection(dbCString); >> >> ThisConnection.Open(); >> >> >> >> Thanks in advance for any help. >> >> >> >> >> >> >> >> >> > >
Thanks for the suggestion, but using only one or the other didn't work,
either. [quoted text, click to view] "Arnie Rowland" <arnie@1568.com> wrote in message news:OD744%23LFHHA.1912@TK2MSFTNGP03.phx.gbl... > This is a WAG: > > You only need one of these two settings, perhaps having both is causing > the connection string to cause failure. > > Integrated Security=true;Trusted_Connection=true; > > -- > Arnie Rowland, Ph.D. > Westwood Consulting, Inc > > Most good judgment comes from experience. > Most experience comes from bad judgment. > - Anonymous > > You can't help someone get up a hill without getting a little closer to > the top yourself. > - H. Norman Schwarzkopf > > > "TAC" <tac@noemail.com> wrote in message > news:ONCdne2ocahst_LYnZ2dnUVZ_u6dnZ2d@giganews.com... >> Thanks for the info, but I did everything suggested in those two articles >> and I still get the same connection error. I also tried various >> alterations of my connection string with no success. Further research >> indicates that this is a common problem, so I wonder why Microsoft ships >> the Express edition along with Visual Studio 2005, but makes it so >> difficult to connect. >> >> If you or anyone else has any other ideas, I would be most grateful. >> >> Thanks. >> >> >> "Arnie Rowland" <arnie@1568.com> wrote in message >> news:OOy2vm$EHHA.1784@TK2MSFTNGP06.phx.gbl... >>> Perhaps these will help: >>> >>> Configuration -Configure SQL Server 2005 to allow remote connections >>> http://support.microsoft.com/default.aspx?scid=kb;EN-US;914277 >>> >>> Configuration -Connect to SQL Express from "downlevel clients" >>> http://blogs.msdn.com/sqlexpress/archive/2004/07/23/192044.aspx >>> >>> >>> -- >>> Arnie Rowland, Ph.D. >>> Westwood Consulting, Inc >>> >>> Most good judgment comes from experience. >>> Most experience comes from bad judgment. >>> - Anonymous >>> >>> You can't help someone get up a hill without getting a little closer to >>> the top yourself. >>> - H. Norman Schwarzkopf >>> >>> >>> "TAC" <tac@noemail.com> wrote in message >>> news:GsCdnUMH0OMdb_DYnZ2dnUVZ_qOdnZ2d@giganews.com... >>>>I just installed SQL Server 2005 Express edition, and created an app in >>>>Visual Studio using C#. I get the following error when trying to >>>>connect: >>>> >>>> "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: Named Pipes Provider, error: 40 - Could not >>>> open a connection to SQL Server)" >>>> >>>> I enabled Named Pipes but left TCP/IP disabled because this is a >>>> localhost connection on the same computer. >>>> >>>> Here is the portion of the code I am using to connect: >>>> >>>> string dbCString = "Persist Security Info=False;Integrated >>>> Security=true;Trusted_Connection=true;Initial >>>> Catalog=MxData;server=(local)"; >>>> >>>> SqlConnection ThisConnection = new SqlConnection(dbCString); >>>> >>>> ThisConnection.Open(); >>>> >>>> >>>> >>>> Thanks in advance for any help. >>>> >>>> >>>> >>>> >>>> >>>> >>>> >>>> >>>> >>> >>> >> >> > >
After a lot of research, here's the answer. The connection string should
read as follows: "Server=.\\SQLEXPRESS;Initial Catalog=MxData;Integrated Security=SSPI"; Note that you need a dot followed by TWO left slashes in your server name. BTW, Initial Catalog is whatever database you want to use. [quoted text, click to view] "TAC" <tac@noemail.com> wrote in message news:bpadnbRK_s7Mz_LYnZ2dnUVZ_oadnZ2d@giganews.com... > Thanks for the suggestion, but using only one or the other didn't work, > either. > > > "Arnie Rowland" <arnie@1568.com> wrote in message > news:OD744%23LFHHA.1912@TK2MSFTNGP03.phx.gbl... >> This is a WAG: >> >> You only need one of these two settings, perhaps having both is causing >> the connection string to cause failure. >> >> Integrated Security=true;Trusted_Connection=true; >> >> -- >> Arnie Rowland, Ph.D. >> Westwood Consulting, Inc >> >> Most good judgment comes from experience. >> Most experience comes from bad judgment. >> - Anonymous >> >> You can't help someone get up a hill without getting a little closer to >> the top yourself. >> - H. Norman Schwarzkopf >> >> >> "TAC" <tac@noemail.com> wrote in message >> news:ONCdne2ocahst_LYnZ2dnUVZ_u6dnZ2d@giganews.com... >>> Thanks for the info, but I did everything suggested in those two >>> articles and I still get the same connection error. I also tried >>> various alterations of my connection string with no success. Further >>> research indicates that this is a common problem, so I wonder why >>> Microsoft ships the Express edition along with Visual Studio 2005, but >>> makes it so difficult to connect. >>> >>> If you or anyone else has any other ideas, I would be most grateful. >>> >>> Thanks. >>> >>> >>> "Arnie Rowland" <arnie@1568.com> wrote in message >>> news:OOy2vm$EHHA.1784@TK2MSFTNGP06.phx.gbl... >>>> Perhaps these will help: >>>> >>>> Configuration -Configure SQL Server 2005 to allow remote connections >>>> http://support.microsoft.com/default.aspx?scid=kb;EN-US;914277 >>>> >>>> Configuration -Connect to SQL Express from "downlevel clients" >>>> http://blogs.msdn.com/sqlexpress/archive/2004/07/23/192044.aspx >>>> >>>> >>>> -- >>>> Arnie Rowland, Ph.D. >>>> Westwood Consulting, Inc >>>> >>>> Most good judgment comes from experience. >>>> Most experience comes from bad judgment. >>>> - Anonymous >>>> >>>> You can't help someone get up a hill without getting a little closer to >>>> the top yourself. >>>> - H. Norman Schwarzkopf >>>> >>>> >>>> "TAC" <tac@noemail.com> wrote in message >>>> news:GsCdnUMH0OMdb_DYnZ2dnUVZ_qOdnZ2d@giganews.com... >>>>>I just installed SQL Server 2005 Express edition, and created an app in >>>>>Visual Studio using C#. I get the following error when trying to >>>>>connect: >>>>> >>>>> "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: Named Pipes Provider, error: 40 - Could not >>>>> open a connection to SQL Server)" >>>>> >>>>> I enabled Named Pipes but left TCP/IP disabled because this is a >>>>> localhost connection on the same computer. >>>>> >>>>> Here is the portion of the code I am using to connect: >>>>> >>>>> string dbCString = "Persist Security Info=False;Integrated >>>>> Security=true;Trusted_Connection=true;Initial >>>>> Catalog=MxData;server=(local)"; >>>>> >>>>> SqlConnection ThisConnection = new SqlConnection(dbCString); >>>>> >>>>> ThisConnection.Open(); >>>>> >>>>> >>>>> >>>>> Thanks in advance for any help. >>>>> >>>>> >>>>> >>>>> >>>>> >>>>> >>>>> >>>>> >>>>> >>>> >>>> >>> >>> >> >> > >
Thanks for following up your own post. It prevents others from wasting their
time trying to help you after you have solved the problem, and it helps others when you share your solution. -- Arnie Rowland, Ph.D. Westwood Consulting, Inc Most good judgment comes from experience. Most experience comes from bad judgment. - Anonymous You can't help someone get up a hill without getting a little closer to the top yourself. - H. Norman Schwarzkopf [quoted text, click to view] "TAC" <tac@noemail.com> wrote in message news:BKidnUwKtpML-PLYnZ2dnUVZ_qmdnZ2d@giganews.com... > After a lot of research, here's the answer. The connection string should > read as follows: > "Server=.\\SQLEXPRESS;Initial Catalog=MxData;Integrated Security=SSPI"; > > Note that you need a dot followed by TWO left slashes in your server name. > BTW, Initial Catalog is whatever database you want to use. > > > "TAC" <tac@noemail.com> wrote in message > news:bpadnbRK_s7Mz_LYnZ2dnUVZ_oadnZ2d@giganews.com... >> Thanks for the suggestion, but using only one or the other didn't work, >> either. >> >> >> "Arnie Rowland" <arnie@1568.com> wrote in message >> news:OD744%23LFHHA.1912@TK2MSFTNGP03.phx.gbl... >>> This is a WAG: >>> >>> You only need one of these two settings, perhaps having both is causing >>> the connection string to cause failure. >>> >>> Integrated Security=true;Trusted_Connection=true; >>> >>> -- >>> Arnie Rowland, Ph.D. >>> Westwood Consulting, Inc >>> >>> Most good judgment comes from experience. >>> Most experience comes from bad judgment. >>> - Anonymous >>> >>> You can't help someone get up a hill without getting a little closer to >>> the top yourself. >>> - H. Norman Schwarzkopf >>> >>> >>> "TAC" <tac@noemail.com> wrote in message >>> news:ONCdne2ocahst_LYnZ2dnUVZ_u6dnZ2d@giganews.com... >>>> Thanks for the info, but I did everything suggested in those two >>>> articles and I still get the same connection error. I also tried >>>> various alterations of my connection string with no success. Further >>>> research indicates that this is a common problem, so I wonder why >>>> Microsoft ships the Express edition along with Visual Studio 2005, but >>>> makes it so difficult to connect. >>>> >>>> If you or anyone else has any other ideas, I would be most grateful. >>>> >>>> Thanks. >>>> >>>> >>>> "Arnie Rowland" <arnie@1568.com> wrote in message >>>> news:OOy2vm$EHHA.1784@TK2MSFTNGP06.phx.gbl... >>>>> Perhaps these will help: >>>>> >>>>> Configuration -Configure SQL Server 2005 to allow remote connections >>>>> http://support.microsoft.com/default.aspx?scid=kb;EN-US;914277 >>>>> >>>>> Configuration -Connect to SQL Express from "downlevel clients" >>>>> http://blogs.msdn.com/sqlexpress/archive/2004/07/23/192044.aspx >>>>> >>>>> >>>>> -- >>>>> Arnie Rowland, Ph.D. >>>>> Westwood Consulting, Inc >>>>> >>>>> Most good judgment comes from experience. >>>>> Most experience comes from bad judgment. >>>>> - Anonymous >>>>> >>>>> You can't help someone get up a hill without getting a little closer >>>>> to the top yourself. >>>>> - H. Norman Schwarzkopf >>>>> >>>>> >>>>> "TAC" <tac@noemail.com> wrote in message >>>>> news:GsCdnUMH0OMdb_DYnZ2dnUVZ_qOdnZ2d@giganews.com... >>>>>>I just installed SQL Server 2005 Express edition, and created an app >>>>>>in Visual Studio using C#. I get the following error when trying to >>>>>>connect: >>>>>> >>>>>> "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: Named Pipes Provider, error: 40 - Could not >>>>>> open a connection to SQL Server)" >>>>>> >>>>>> I enabled Named Pipes but left TCP/IP disabled because this is a >>>>>> localhost connection on the same computer. >>>>>> >>>>>> Here is the portion of the code I am using to connect: >>>>>> >>>>>> string dbCString = "Persist Security Info=False;Integrated >>>>>> Security=true;Trusted_Connection=true;Initial >>>>>> Catalog=MxData;server=(local)"; >>>>>> >>>>>> SqlConnection ThisConnection = new SqlConnection(dbCString); >>>>>> >>>>>> ThisConnection.Open(); >>>>>> >>>>>> >>>>>> >>>>>> Thanks in advance for any help. >>>>>> >>>>>> >>>>>> >>>>>> >>>>>> >>>>>> >>>>>> >>>>>> >>>>>> >>>>> >>>>> >>>> >>>> >>> >>> >> >> > >
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