How do I fix 0x80070426?

The 0x80070426 error code is a Windows update error that occurs when the computer is unable to connect to the Windows update server. This can happen for a number of reasons, including a firewall blocking the connection, the Windows update server being down, or the computer not being connected to the internet.

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• Run the Windows Update Troubleshooter
• Restart the Windows Update Service
• Reset the Catroot2 folder
• Install the latest updates from Microsoft
• Run a System File Checker scan
• Run a malware scan with your antivirus program

1. Run the Windows Update Troubleshooter

1. Open the Windows Update Troubleshooter by clicking on the Start button, typing Windows Update Troubleshooter in the search box, and pressing Enter.
2. On the Troubleshooting Information tab, click on the Problem Details button.
3. On the General Information tab, under Problem category, click on the Update Problem button.
4. On the Update Problem Details tab, under Problem type, click on the Check for updates button.
5. On the Available updates list, click on the Check for updates button.
6. On the Update Status tab, under Available updates, click on the OK button.
7. If the updates are found, under Status, click on the Install updates button.
8. If the updates are not found, under Status, click on the Restart now button.
9. After the computer restarts, under Status, click on the OK button.
10. In the updated information, under Status, click on the Close button.

2. Restart the Windows Update Service

1. Open the Run prompt by pressing the Windows key and typing "run".
2. Type "cmd" and press Enter.
3. At the command prompt, type "net stop wuauserv" and press Enter.
4. Type "net start wuauserv" and press Enter.
5. If you are prompted to enter a user name and password, type the administrator user name and password.
6. Verify that the Windows Update Service is started by entering "net status" at the command prompt and looking for "WU_SERVICE_STATUS" to return a value of "started."

3. Reset the Catroot2 folder

1. Open the command prompt and type the following: net stop catroot2
2. Type the following command to restart the catroot2 service: net start catroot2
3. Type the following command to verify that the catroot2 service has been restarted: net status
4. If the catroot2 service is not running, type the following command to start it: net start catroot2

4. Install the latest updates from Microsoft

1. Open Windows Update and sign in.
2. On the left-hand side, under “Updates,” click “Check for updates.”
3. If there are new updates available, they will be listed on the right-hand side.
4. Click “Install updates.”
5. If you are prompted to select the updates, click “Yes.”
6. After the updates are installed, Windows will restart.
7. If you have any questions or problems, please contact Microsoft support.

5. Run a System File Checker scan

1. Open a command prompt.
2. Type system file checker and press Enter.
3. The system file checker will start to scan your computer for missing, corrupted, or out-of-date system files.
4. It will notify you if it finds any problems.
5. You can Fix any problems that the system file checker finds by following the instructions it provides.

6. Run a malware scan with your antivirus program

1. Open your antivirus program and click on the "Scan" button.
2. In the "Scan Type" drop-down menu, select "Threat Scan."
3. In the "Scan Settings" window, select the items you want to scan, such as files, folders, and drives.
4. Click on the "Start Scan" button.
5. When the scan is complete, click on the " finished " button to view the results.
6. If you find any malware, click on the "Fix" button to remove it.

Some users might also have success with the following opitons:

1. Temporarily disable your antivirus software
2. Perform a clean boot of your computer
3. Contact Microsoft Support