Windows update error 643 occurs when you try to update windows to use the new features and update files like drivers, dll etc. If you have not updated your system then you can meet with Windows update error 643 and also some other problems as system slow, system shut down automatically etc. You need to remove Windows update error 643 as soon as possible if you want to update Windows successfully because it will protect to update. You can receive this error code in all versions of Windows like Windows 8, 7, XP and Vista. These days there are many types of software developed by developers to provide the better performance, easy managing but it needs to update windows so that it may compatible with such type of software or hardware.
Cause of Windows error 643:-
Like other Windows errors, missing files are also the issue or cause of Windows error 643. It is a common issue because Windows work on the basis of support of the system files so if any one of the system file is missing or corrupt then system can’t updated and you will receive the error message as- Some files can’t be updated-error code 643