Listed here are some easy strategies that you should use to troubleshoot error 27502. The SQL server doesn’t exist or entry is denied.
There are a number of recognized causes for this error:
The SQL Server database server identify has been modified, invalidating the present connection info. 1
SQL Server will not be configured to make use of the required protocols. 2
In SQL Server 2005, the server is assigned an occasion identify. This isn’t counted within the connection info. 3
The SQL Server Browser service will not be operating or will not be configured accurately to hear on a port or channel for a selected DB occasion. 4
- SQL Server is operating
- Occasion of SQL Server will not be obtainable or doesn’t exist
- Distant connection not enabled as an example of SQL Server
- The port will not be added to the firewall exceptions listing
To begin with, it’s essential to examine if SQL Server is operating or not.
For e Then enter the command “Companies.msc” within the Run window.
Test your connection strings and ensure you are attempting to connect with the right server and that it’s obtainable on the community.
To examine if distant connection is enabled or disabled, open SQL Server Administration Studio -> Use SQL Server Administration Studio to connect with the SQL Server it’s put in on -> Swap to SQL Server occasion and allow the Permit distant connection to this selection server.
Generally a messageThe error “SQL Server doesn’t exist or entry is denied” happens when a distant connection to SQL Server is enabled, however the port is blocked by the administrator for safety causes. …
The SQL Server occasion is operating (by default) on port # 1433, so it’s essential to be certain the port exception has been added to the firewall as nicely.
To examine for a port exception, do the next:
- Go to Management Panel -> Open Administration Software -> Choose Home windows Firewall with Superior Safety.
- Click on inbound guidelines within the left pane and choose New Rule in the suitable pane.
To examine if SQL Server is lacking or denied entry on account of IP handle, examine the IP handle within the command line, for instance
Ping 188.8.131.52 - t
When you obtain a response from the server, it signifies that there are not any issues with blocking the IP handle. If not, you have to add an exception (see level 4 above).