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how to sucessfully connect sql Smm server profile to database engine?

Iwunor kelechi 0 Reputation points
2026-05-02T14:05:18.68+00:00

i tried connecting sql 2025 model of server profiler 22 in my system of DESKTOP-UL2OACD BUT its showing

TITLE: Connect to Server


Cannot connect to DESKTOP-UL2OACD\iwunor kelechi.


ADDITIONAL INFORMATION:

A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections. (provider: SQL Network Interfaces, error: 26 - Error Locating Server/Instance Specified) (Microsoft SQL Server, Error: -1)

For help, click: https://docs.microsoft.com/sql/relational-databases/errors-events/mssqlserver--1-database-engine-error


BUTTONS:

OK


SQL Server Database Engine
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3 answers

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  1. Senthil kumar 315 Reputation points
    2026-05-07T05:50:40.9833333+00:00

    Hi Iwunor kelechi,

    Thanks reach out here,

    some of the points you have check in your system.

    • please make sure locally your connecting this sql server.
    • please check firewall blocking. and please make sure port 1433 should be open. in inbound and outbound.
    • suppose your are try to login with sql server authentication. try to login with windows authentication. may be 'SA' user not configured this error will occur.

    Thanks.

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  2. Erland Sommarskog 134K Reputation points MVP Volunteer Moderator
    2026-05-02T20:47:59.19+00:00

    The error message informs you that you were not able to reach the SQL Server instance you specified. There can be a number of reasons for this error:

    • SQL Server is not running.
    • Server and / or instance name is incorrect.
    • There is no SQL Server instance on the machine you are trying to connect to.
    • There are firewalls blocking the way. (When trying to connect to SQL Server on another machine.)
    • When connecting to a named instance, the SQL Server browser service is not running. (When trying to connect to SQL Server on another machine.)

    You don't any include any information on why you expect connection to succeed, so I am left to a guessing game. What looks suspect in the error message is the instance name. Is that really correct? (I am not sure that space is event permitted in instance names.) The default name for an instance of SQL Server Express is SQLEXPRESS, so maybe that is what you should try.

    Are you able to connect with SSMS (SQL Server Management Studio). Profiler is no different.

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  3. Q&A Assist
    2026-05-02T14:05:35.0933333+00:00
    AI generated content. This question contains an answer created with AI from Q&A Assist. Learn more

    The error indicates that the SQL Server instance name specified in the connection dialog is not reachable or does not exist.

    Use the following checks and steps on DESKTOP-UL2OACD:

    1. Verify that SQL Server is actually installed and running
      • SQL Server Management Studio (SSMS) and SQL Server Profiler are only client tools. They do not install the Database Engine.
      • If only SSMS/Profiler was installed, install SQL Server Database Engine separately.
      • If SQL Server is installed, open SQL Server Configuration Manager and check under SQL Server Services that the Database Engine service is running.
    2. Confirm the correct server/instance name
      • In SQL Server Configuration Manager, under SQL Server Services, note the Instance Name:
        • If the instance name is MSSQLSERVER, that is the default instance. Connect using just the computer name (for example, DESKTOP-UL2OACD) or localhost or ..
        • If there is a named instance (for example, SQLEXPRESS), connect using DESKTOP-UL2OACD\SQLEXPRESS.
      • The name DESKTOP-UL2OACD\iwunor kelechi is almost certainly incorrect as an instance name. Use the actual instance name from Configuration Manager.
    3. Verify enabled protocols on the server
      • Open SQL Server Configuration Manager.
      • Go to SQL Server Network ConfigurationProtocols for <YourInstance>.
      • Ensure Shared Memory and TCP/IP are Enabled. For remote connections, TCP/IP must be enabled.
      • If any protocol state is changed, restart the Database Engine service under SQL Server Services.
      • For details, see the “Verify the enabled protocols on SQL Server” section in the referenced article.
    4. Test a local connection from SSMS
      • On DESKTOP-UL2OACD, open SSMS.
      • In Server name, try:
        • .
        • localhost
        • DESKTOP-UL2OACD
        • Or DESKTOP-UL2OACD\<InstanceName> using the exact instance name from step 2.
      • If a custom TCP port is configured, use tcp:DESKTOP-UL2OACD,<port> as described in the connection options.
    5. If connecting from another computer
      • Ensure the firewall on DESKTOP-UL2OACD allows inbound traffic on the SQL Server port (default TCP 1433 for a default instance, or the configured port for a named instance):
        • Confirm the instance port, then configure the firewall as described in the firewall section of the referenced article.
      • If using instance name (not explicit port), ensure SQL Server Browser is running and UDP 1434 is open, or instead connect using tcp:<computer_name>,<port>.
    6. Verify client protocol order (if remote)
      • On the client machine, open SQL Server Configuration Manager.
      • Under SQL Native Client <version> ConfigurationClient Protocols, ensure TCP/IP is enabled and ordered before Named Pipes for remote connections.

    Once the correct instance name is used, the Database Engine service is running, required protocols are enabled, and firewall (if remote) is configured, SQL Server Profiler can connect using the same server name and authentication settings that work in SSMS.


    References:

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