Error 0x80070643 is an error message that can appear for a large number of different reasons and usually has to do with issues within the registry related to the program files within certain updates of programs. If you are encountering issues that display the error number 0x80070643 there are a couple of things that should be done right away. If you continue to read below you will be able to find a way to fix the errors related to 0x80070643 messages.
The first thing to do is to identify the program that is causing error message 0x80070643. If the message seems to happen at the same time then the best thing to do to identify the issue is to keep track of the activities of the system prior to error message 0x80070643 appearing.
If error 0x80070643 only appears after you try to use one program then it will most likely be that specific program that is making the error message. If there are multiple programs running at a time it is best to shut them all down, as long as they are not required for Windows to run, and start each program separately until the error 0x80070643 appears.
Once you have identified the program that is causing error message 0x80070643 to appear then write down the specific error message. Once you have this error message you should be able to see if there are any references to the specific issue that is causing the 0x80070643 error.
Many times error 0x80070643 will occur when the specific program is attempting to update or download additional files to the program. This will usually be referenced in the error message stating that an update could not be applied or that an incorrect dll file is causing error 0x80070643. If this is the issue then the best thing to do is to download the Windows program uninstaller and completely remove the program and then reinstall the latest version of the program, as this will start the program out with a fresh install as well as remove the issue when attempting to update the program.
This should only be done to a program that is not required for the operating system to work, as removing required files may create an unstable environment for the operating system to work in.
Another option to fixing error 0x80070643 is to run a Registry Cleaner through the system. This will ensure that there were no errors in the registry that are causing error message 0x80070643 to appear. There are some instances where incorrect dll files, located within the registry, can actually prevent a program from being able to update and thus create error 0x80070643 when the new versions are trying to be installed or updated.
Many times registry cleaners will not only fix the issues relating to error 0x80070643 but also increase the speed of your system and optimize the overall performance of not only the system but the programs on your system as well.