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Microsoft Dynamics NAV (Archived)

A connection to SQL server is no longer usable.

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Posted on by

We're getting the following error: 

A connection to SQL server is no longer usable. This could be caused by one of the following reasons: 

* The server has been shut down manually or because of an error. 

* The SQL server connection settings are not correct. 

* A network failure has occurred. 

* A hardware failure has occurred on the server or on your computer. Try to connect again later or contact your system administrator.

We tried doing the following: 

You can do following

1. Open SQL Studio

2. Double clicked on the "NT AUTHORITY\NETWORK SERVICE" user under "Security / Logins"

3. Selected "User Mapping"

4. Check marked the database which neeed access to

5. Copy in "$ndo$navlistener" into "Default Schema" for selected database

6. check marked following

db_datareader

db_datawriter

db_ddadmin

We had to recreate the "NT AUTHORITY\NETWORK SERVICE" user under "Security / Logins" as it wasn't there. Inspite of doing the above steps, we're still getting the same error. How do we go about this?

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I have the same question (0)
  • Stefano Demiliani Profile Picture
    37,166 Most Valuable Professional on at

    Is your SQL Server service running? Check the services on your server machine.

    If the problem is related when using NAV web client, check here:

    docs.microsoft.com/.../troubleshooting--a-fatal-error-occurred.-the-connection-to-sql-server-cannot-be-established

  • Suggested answer
    Andrey Baludin Profile Picture
    3,941 on at

    Check that it started. I suppose it's stopped.

    4251.sql.JPG

  • Community Member Profile Picture
    on at

    Yup, it has started. Still not working.

  • Community Member Profile Picture
    on at

    Yup, it is working. Changers aren't happening on the client as well as on the browser.

  • Community Member Profile Picture
    on at

    We you able to figure out the issue?  We've had the exact same issue on one Job Queue job.

    Sorry, just realized this is from last year and I'm not able to delete my post.

  • xantouch Profile Picture
    5 on at

    I faced the same problem on one Object, I recompiled the object, and I'm not having this error message anymore.

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