How to cure user sa?

Question

SQL

Hello, I wanted to run the sql server on behalf of the sa user, and I came across an error, I ask for help, who came across?
Unable to connect to SQL1.
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Login failed for user "sa". (.Net SqlClient Data Provider)
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For help, click: go.microsoft.com/fwlink ?ProdName=Microsoft%20SQL%2...
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Server Name: SQL1 Error
Number: 18456
Severity : 14
Condition: 1
Line number: 65536

Answer 1

If a connection attempt is denied as a result of an authentication failure due to an invalid username or password, the client receives a message similar to the following: "Login failed for user <username>.(Microsoft SQL Server, Error: 18456)".
More details and how to search for the cause are described here: MSDN