Your account has not been replaced by this Microsoft account 0x80070426

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  1. Download and install the repair tool here.
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In Windows 10 and 8, using a Microsoft account is often necessary for certain features like accessing the Windows Store. This requires switching from a local account to a Microsoft account. This process is straightforward for some users, but others might encounter issues. For instance, after upgrading from Windows 8 to 8.1, or to Windows 10, using a Microsoft account, you might see an error message:

“We are sorry, but something went wrong. Your account has not been replaced by this Microsoft account. Code: 0x80070426”

If this error appears, the first step is to restart your computer. If the problem persists, you can try setting up a new user account and switching to a Microsoft account. However, if you prefer not to create a new user account, follow these steps (it’s advisable to create a system restore point before proceeding):

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  • Step 1 : Download PC Repair & Optimizer Tool (Windows 10, 8, 7, XP, Vista – Microsoft Gold Certified).
  • Step 2 : Click “Start Scan” to find Windows registry issues that could be causing PC problems.
  • Step 3 : Click “Repair All” to fix all issues.


1. Press Windows key + R, type ‘regedit‘ in the Run dialog, and press Enter to open the Registry Editor.

2. Press Ctrl+F and search for your Microsoft account email ID (e.g., [email protected]). Ensure the options for Key, Values, Data are enabled, and click Find.

3. You will find two specific registry keys associated with the error code 0x80070426.

4. Once you locate these two keys, export them to a safe location and then delete them. Close the Registry Editor and restart your computer to apply these changes.


Here are two other methods that you can try:

1. Uninstall Microsoft Security Essentials and Restart Windows Defender Services:

– First, open Task Manager (Win + X, then click Task Manager).
– Go to the Services tab, find the Windows Defender Antivirus Service (WinDefend) and stop it.
– Open Control Panel and navigate to Programs > Programs & Features > Uninstall a Program.
– Uninstall Microsoft Security Essentials.
– Restart your computer and navigate to Settings > Update & Security > Windows Security.
– Check if Real-time protection is on under Virus & threat protection settings.
– Finally, ensure that the Windows Defender Antivirus Service is running in Task Manager.

2. Perform a Clean Boot to Check for Software Conflicts:

– Open the Run dialog box (Windows Key + R), type “msconfig”, and press Enter.
– In the System Configuration window, go to the Services tab and select the ‘Hide all Microsoft services‘ option.
– Click the ‘Disable All‘ button.
– Next, go to the Startup tab and click the ‘Open Task Manager‘ link.
– Disable all startup items listed in Task Manager.
– Restart your computer.
– After the restart, check if the error is resolved. If it is, enable startup items one by one and restart each time to identify the problematic software.


Expert Tip: This repair tool scans the repositories and replaces corrupt or missing files if none of these methods have worked. It works well in most cases where the problem is due to system corruption. This tool will also optimize your system to maximize performance. It can be downloaded by Clicking Here

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