How to Solve Windows Update Error 0X80070643?

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Error 0X80070643 

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Windows Update Error 0X80070643 is one of the most annoying and frustrating Windows errors. But in most cases, a previous installation puts the computer in a state where a restart is pending... This error usually occurs when you try to install Windows Update or when you try to do an installation. You have to do a detailed analysis and troubleshoot to fix this error 0X80070643.

Most common occasions when error code 0X80070643 triggered

1. Error 0X80070643 while installing Windows update
2. Error 0X80070643 while installing Windows service pack
3. Installation of Windows Defender Failed with error 0X80070643
4. Outlook shows 0X80070643 when creating new profile
5. Office installation failed with error 0X80070643
   

What is the reason for error 0X80070643?

• A pending restart – Previous Windows Update or any installation requires the computer to be restarted.
• .Net Framework is corrupted .
• Antivirus or any other program or file interfering with the update installation process.
• Your computer is infected with a malware/virus.
• Widows Update Server could be busy or overloaded with update request.
• Incorrect shutdown.
• Corrupted or missing system files .

How to Fix Error 0X80070643 ?

As we explained, it is unclear what exactly have caused error code 0X80070643. Here we describe step by step troubleshooting guide for you. The solutions given below were formulated considering different aspects you might face. Please follow it carefully and let us know the result of the solution we provided.

Before you begin the troubleshooting

• Make sure you backup your important files to an external storage device.
• Logged in to a user account with administrator privilege /power. For Windows Home editions, use the default account.
• Reboot your PC
• Close all programs
• C drive has enough space (min 10/20 GB free) – Use Cleanup disk tool to free up space
• Date and time of your computer/laptop is accurate – Change it if is wrong.
• Region and Keyboard layout settings is correct.
• You have an active reliable Internet connection and you are not on a metered connection.
• Update your Antivirus and run a thorough system scan. Make sure that your system is not infected with a virus/malware.

1. Restart the Computer

A pending restart after a previous Windows update or installation can cause this error. So restart the computer and try Windows Update. Follow the next step if the update process failed with error 0X80070643.

2. Anti-Malware Scan

Malware like viruses can cause havoc in your PC. Download Microsoft Safety Scanner and run a complete through scan. Run it in safe mode for the more efficient check. Restart your PC and go to next step.

3. Install Latest .Net Framework and Repair Corruption

Download and install latest .Net framework : https://dotnet.microsoft.com/download

Fix .Net Framework Corruption – Repair Tool

In some cases, corrupted .Net Framework had led to this error. So download and run the .Net repair tool.

Download URL : https://www.microsoft.com/en-us/download/details.aspx?id=30135

Restart the PC and try Windows update, Follow the next step if the update failed.

4. Run Windows Update Troubleshooter

Windows 10 has an inbuilt Windows Update Troubleshooter that can fix almost all issues related to Windows Update. Alternatively, you can download and run the Windows update troubleshooting tools for Windows 10, Windows 7, and 8 from the Microsoft website.

Windows 10 Update troubleshooter

• Go to Windows Settings -> Select Update & Security
• Select “Troubleshoot” from left pane

• Click “Additional troubleshooters” and then select “Windows Update“
• Now click “Run the troubleshooter” button to begin the troubleshooting.

In this example given above, the troubleshooter has detected “Windows Update Database error” and it has automatically fixed it.

Reboot your PC and run Windows Update. Try the next step if the update failed.

5. Run CHKDSK to check file system integrity

Run CHKDSK command to verify the integrity of the file system and fix logical file system errors. CHKDSK will also check for bad sectors in your hard disk and it will try to recover and relocate the damaged sector. This error may occur if files that belong to Windows Update components are affected by a bad sector. Open command prompt as administrator and run this command.

C:\Windows\system32>chkdsk /R

CHKDSK may show this message “Chkdsk cannot run because the volume is in use by another process. Would you like to schedule this volume to be checked the next time the system restarts? (Y/N)”, then enter “Y” and restart your computer. During the reboot process, CHKDSK will scan the file system for errors and it tries to recover any errors.

6. Run Disk Cleanup tool to free up storage space

Disk cleanup tool will help us to automatically delete temporary files, recycle bin, temporary internet files, delete files in download folder etc.

Go to This PC [ Start menu->Documents->In the right pane you can see “This PC”]

Right click “C:” drive and select Properties

If you don’t have sufficient disk space, then use “Disk Cleanup” feature to remove unwanted files.

Select file types from “File to delete” option

• Downloaded Program Files – Tick this option to delete ActiveX controls and Java applets downloaded automatically from the internet when you view certain pages. They are temporarily stored in Downloaded Program Files folder on your hard disk.
• Temporary Internet Files folder contains webpages stored on your hard disk for quick viewing, Your personalized settings for webpages will be left intact.
• Windows error reports and feedback diagnostics files are generated from Windows Errors and user feedback
• DirectX Shader cache – Clean up files created by graphics system which can speed up application load time and improve responsiveness. They will be re-generated as needed.
• Delivery Optimization Files are files that were previously downloaded to your computer and can be deleted if currently unused by Delivery Optimization service.
• Downloads – Tick this this to delete all files in your Download folder.
• Recycle Bin – To remove files you have deleted from your computer. These files are note permanently removed until you empty Recycle Bin.
• Temporary files– Apps can store temporary information in specific folders. These can be cleaned up manually if the app does not do it automatically.
• Thumbnails – Windows keeps a copy of all your picture, video and document thumbnails so they can be displayed quickly when you open folder. if you delete these thumbnails, they will be automatically recreated as needed.

Click “OK” button after selecting all required files for deleting. Then system will popup “Are you sure you want to permanently delete these files ?“, click Yes to start the cleanup.

7. System Update Readiness Tool (For Windows 7, Vista & Server 2008 OS)

Download and install System Update Readiness Tool if your OS is Windows 7, Vista & Server 2008 OS. Please skip to next step if your OS is Windows 10. The System Update Readiness Tool (CheckSUR) is a tool from Microsoft that can fix a lot of issues related to Windows Update. System Update Readiness Tool repairs Windows Update system files and registry settings. It will automatically fix problems related to Windows Update.
Download URL https://www.catalog.update.microsoft.com/Search.aspx?q=947821 .

Run System Update Readiness Tool and upon completion try to run Windows Update again. Try the next step if Windows Update failed.

8. Run DISM (Deployment Image Servicing and Management) tool

Open Command prompt (cmd.exe) as administrator, type this DISM command given below and press enter key.

DISM.exe /Online /Cleanup-image /Restorehealth

It may sometime to complete the process. DISM will scan and identify the corrupted files, then it will try to replace the corrupted files by downloading new files through Windows Update process. If the Windows update client is already corrupted then you may have to download the latest System Update Readiness Tool and install it to fix corrupted files. Make sure you have internet connection.

9. Run SFC to scan and repair Windows system files

Run System File Checker tool to repair missing or corrupted system files.

Open command prompt as administrator and run SFC /scannow command

C:\Windows\system32>sfc /scannow

Try Windows Update Again. If failed , follow the next step.

10. Reset Windows Update Data Folder

1. Go to Windows Services (Run Services.msc).
2. Stopped Background Intelligent Transfer Service.
3. Stopped Windows Update.
4. Opened Explorer.
5. Navigate to this folder and deleted contents of “c:\Windows\SoftwareDistribution\Download”.
6. Select all files ->Right click -> then click Delete button

Restart the PC and try Windows Update.

If Windows update failed again then follow the next step.

10. System Restore

Restore your system to a restore point created before this problem has started. This step is more critical one, applications installed and settings configures after that restore point may loose after this process. How to restore Windows 10 to an earlier restore point ?

Try Windows update after the restore process. Follow the next step if the same error appears again.

11. Windows 10 Reset

Windows 10 has built in tool called “Reset this PC“, this tool can reinstall Windows 10 without loosing your files and settings to factory settings. Windows Reset this PC tool can solve System file corruptions and wipe out malicious and unwanted applications existing on the computer.

1. Go to Windows Start menu and click “Settings“

2. Select “Update & Security“

3. Select Recovery option from left pane.

4. In Recovery window you can see “Reset this PC”.
5. Click “Reset this PC” button.

6. Reset this PC have two options

• Keep my files – This option will remove “Apps and settings” only, it keeps your personal files safe (even though we recommend you to back up your personal files to an external hard disk).
• Remove everything – Removes all of your personal files, apps and settings

7. Click “Keep my files” option to start Windows 10 rest this PC process.
8. In newer versions , you may prompt to select the installation source , “Cloud download” or “Local reinstall”.

Cloud Download

If you choose this option, Windows will download all its necessary installation files from the cloud.
I will recommend this option if you have a high speed internet connection and because it will download latest files from Microsoft’s server for Windows installation, this will be around 4GB of data. This is the more reliable method, local files might have chance for corruption.

Local reinstall

If you choose this option, Windows will source files from your device.

9. Choose your option and continue
10. if you have upgraded from an older Windows OS (7 or 8), Windows will warns you that you won’t be able to roll back to a prior version of the OS. Click “Next” to continue.
11. In next screen you can see “Reset” button, click this button to start the Reset process. The Reset this PC process will take several minutes to complete. Usually the whole process will complete without any issues.

Try Windows Update again.

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