This browser is no longer supported.
Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support.
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(240, 87%, 33%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EZ%3C/text%3E%3C/svg%3E)
I cannot connect any client application like (SSMS, Azure Data Studio) localhost of sql server, previously I was able to do this successfully using both client tools, any idea what could have gone wrong, I have not unistalled anything from my laptop,
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(182.40000000000003, 97%, 27%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ENM%3C/text%3E%3C/svg%3E)
Hi @Zahid ,
We have not received a response from you. Did the reply could help you? If the response helped, do "Accept Answer". If it doesn't work, please let us know the progress. By doing so, it will benefit all community members who are having this similar issue. Your contribution is highly appreciated.
Best regards
Niko
Hi @Zahid ,
Any update for this thread? Did the reply could help you?
See
https://learn.microsoft.com/en-US/troubleshoot/sql/connect/resolve-connectivity-errors-overview
for a checklist to troubleshot.
Hi @Zahid ,
Based on the error description, the local instance name on your computer appears to be incorrect. Use SQLCMD for verification.
We can open the CMD, enter SQLCMD-L, and then we will get a list of all the instances installed in the network, please check if there are some instances under the "(Local)" column, as shown in the figure below.
Best regards
Niko
If the answer is the right solution, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment".