Steps to Fix Microsoft SQL Server Error 18456: Login Failed

Summary: SQL Server Error 18456 is one of the most common and challenging errors for database users. This error typically occurs when a user tries to log into SQL Server and receives a message error “Login Failed”. But, there are various steps to fix this error. This blog will explore the most common methods to resolve it. Moreover, if you want to fix this error in just a few clicks, then directly use SQL Database Recovery Software. This tool provides a more effective and reliable solution to fix this error.
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Common Causes of SQL Error 18456

This error generally occurs when the user fails to authenticate successfully during the login process. There are specific reasons behind this error:

• Incorrect usernames and passwords during the login process.
• The user account may not exist in the SQL Server system.
• SQL Server configuration & authentication mode issues.
• Account lockout due to failed login attempts in SQL.
• SQL account was corrupted by an unauthorized user.

How do I Fix SQL Server Error 18456?

If you’re wondering how do I fix error 18456 in SQL? There are several approaches. Here, we explain the manual method and an expert-recommended tool. Go through all the executing steps and choose the one that best fits your requirements.

Manual Method to Fix Troubleshooting Error 18456

Here, we will explain the manual method to fix this SQL error. This method involves different steps. However, to perform this method, you have to keep some pointers your mind such as: 

• It requires an active SQL Server license on your system.
• the SQL Server Management Studio installed.
• Requires technical expertise to perform this process. 

Step 1: Use SQL Server Management Studio to Fix Microsoft SQL Server Error 18456

1. Firstly, open the SQL Server Management Studio in your system.
2. Enter your SQL credentials to connect with the SQL Server instance.
3. Now, click on Database and choose Properties to open the Server Properties.

Step 2: Select the Authenticate Mode for SQL Server

Now, you should verify and configure the correct authentication mode:

1. Now, click on the Security option, under the Server Properties.
2. In the authentication server, click SQL Server & Windows Authentication mode.
3. After that, click on OK to save the changes and close the windows.

Step 3: Use SQL Server Configuration Manager to Log in with SA User

1. Then, open the SQL Server Configuration Manager on your device.
2. Afterward, just Restart MSSQLSERVER to fix the SQL Server Error 18456.

Limitations of the Manual Method

While the manual method to fix login errors SQL can be a helpful and free solution. However, it comes with several limitations. Here are some of the most common points that you should keep in mind while using this method: 

• The manual method does not always provide a 100% accurate solution.
• It can be slow and require multiple steps to fix the authentication mode.
• Misconfiguration of authentication settings can also lead to another problem.
• Also, effective to fix minor errors but not helpful to fix major-level errors.
• Manual SQL error fixes might offer different complex errors.

Quick & Effective Solution to Fix SQL Server Error 18456

If manual troubleshooting SQL error 18456 is too complex, the best solution is SQL Database Recovery Software. This powerful tool simplifies the recovery process and ensures a permanent fix for login issues. Additionally, it provides more advanced features for seamless recovery such as:

• It helped to fix SQL Server Error 8946 and other errors.
• Offer dual recovery mode: Advanced & Standard for quick recovery.
• Option to preview the recovered data before saving it.
• Ability to store recovered data in different saving formats.
• Provide a simple and easy-to-use GUI to operate the process easily.
• Furthermore, it is highly compatible with all SQL latest versions.

Simple Steps to Fix SQL Server Error 18456:

1. Initially, launch the SQL Database Recovery Software on your PC.
   
2. Now, click on Open and add the corrupted SQL Database file.
   
3. Check the path of the added SQL file and apply Recovery mode.
   
4. Then, use the optional features and click on the OK button.
   
5. Now, Preview and select the corrupted SQL file.
   
6. Click on the Save SQL File button and choose Saving format.
   
7. In the end, click on OK to initiate the recovery process.
   

Conclusion

Fixing SQL Server Error 18456 can be challenging, but with the right approach, it’s a simple process. You can fix errors by troubleshooting manually or using a tool. The recommended software has features that help you recover your SQL easily. It can also fix Microsoft SQL Server Error 5220. A free version of this tool is also available to evaluate the recovery performance.

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