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Solved: How Do I Fix “Windows is already using that name. Please enter a different username” Error?

Problem: Error show when trying to change the username of a Windows 10 local user account to Administrator. The detailed error message is below.

Windows is already using that name. Please enter a different username.

Solved: How do I fix "Windows is already using that name. Please enter a different username" error?

The username for XXX\XXX could not be changed.

Solved: How do I fix "Windows is already using that name. Please enter a different username" error?

Follow the below solution steps to resolve the “Windows is already using that name” error.

Content Summary

Potential Causes
Solution 1: Enable Built-in Windows 10 Administrator account using command prompt
Solution 2: Enable Built-in Windows 10 Administrator account using user management tool

Potential Causes

Windows 10 already has a built-in Windows 10 Administrator account which is hidden and disabled for security reasons.

Solution 1: Enable Built-in Windows 10 Administrator account using command prompt

Step 1: Type cmd in the search field.

Step 2: Right-click the entry for Command Prompt, and select the Run as administrator option.

Right-click the entry for Command Prompt, and select the Run as administrator option.

Step 3: Type net user administrator. The value for Account active display No.

The value for Account active display No.

Step 4: Type net user administrator /active:yes. The command completed successful message will show.

The command completed successful message will show.

Step 5: Type net user administrator. The value for Account active should now display Yes.

The value for Account active should now display Yes.

Solution 2: Enable Built-in Windows 10 Administrator account using user management tool

Step 1: Open Administrative Tools via the Start menu or Control Panel.

Step 2: Select the Computer Management, and expand the Local Users And Groups. Alternatively, you can type lusrmgr.msc in the search field to open the Local Users and Groups management console.

Alternatively, you can type lusrmgr.msc in the search field to open the Local Users and Groups management console.

Step 3: Expand the Users and double-click the Administrator account.

Expand the Users and double-click the Administrator account.

Step 4: Uncheck the option for Account Is disabled, and click OK or Apply.

Uncheck the option for Account Is disabled, and click OK or Apply.

Step 5: Close the User Management window.

Step 6: Log out and sign in using the Administrator account.

Alex Lim is a certified IT Technical Support Architect with over 15 years of experience in designing, implementing, and troubleshooting complex IT systems and networks. He has worked for leading IT companies, such as Microsoft, IBM, and Cisco, providing technical support and solutions to clients across various industries and sectors. Alex has a bachelor’s degree in computer science from the National University of Singapore and a master’s degree in information security from the Massachusetts Institute of Technology. He is also the author of several best-selling books on IT technical support, such as The IT Technical Support Handbook and Troubleshooting IT Systems and Networks. Alex lives in Bandar, Johore, Malaysia with his wife and two chilrdren. You can reach him at [email protected] or follow him on Website | Twitter | Facebook

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