Windows automatically installs the needed updates in the background.
However, while installing specific updates, you may get an error that reads 0x80070643.
Why the Windows Update Install Error 0x80070643 Appears?
The update mainly appears while installing essential security features.
If you have encountered this error and want to fix it, heres what you could do.
Extend the WinRE Partition
You will get this error if the Windows Recovery Environment partition lacks sufficient free space.
So, its essential to extend the Windows Recovery Environment to get rid of this error.
Launch Command Prompt with Administrator rights.
When the command prompt opens, execute this command:
3.
You will now see the current status and location of your WinRE partition.
Note down the disk and partition number.
Then, selectShrink Volume.
To create free space, you gotta shrink this partition by at least 250MB.
Then, right click theWinRE Partitionand selectDelete Volume.
Next, create a new WinRE Partition.
Right nudge the unallocated space and select New Simple Volume.
Format the new partition asNTFSand label it asWinRE tools.
Open Command Prompt with admin rights.
Then, activate the WinRE by executing this command:
9.
To confirm the WinRE changes, execute this command:
2.
Restart the Windows Installer Service
If you still get the error, restart the Windows Installer Service.
Heres what you oughta do.
Press Windows Key + R on your keyboard.
On the RUN dialog box, typeservices.mscand press Enter.
Right hit the Windows Installer service and selectRestart.
So, its best to turn off the Antivirus program while installing the Windows Update.
It can even fix the Windows Update install error 0x80070643.
Heres how to run it.
Open Windows parameters and switch toSystem.
On the right pane, selectTroubleshoot.
Under the Options, clickOther troubleshooters.
Click theRunbutton besideWindows Update.
confirm to backup all data before you perform a fresh installation.
Then, follow this method to use the Windows Media Creation tool to perform a fresh Windows 11 installation.
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