Error 0xc0070643 when installing avg free

Hello Ronald,
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Have just uninstalled mcafee trial version that was preinstalled on my computer. and trying to install avg free instead, but just getting error message 0xc0070643. Have tried mcafee removing tool and avg removing tool and then reinstalled avg with the same problem

Hello Ronald,
We are sorry for the difficulties you are currently experiencing.
We appreciate your valuable effort in trying to fix it.
I have sent you an email with further instructions to be followed to get our additional support. Please check for the email on spam or junk folders if it is not present in the inbox.
Feel free to contact us for any further assistance. Thank you.

Hi
Try downloading a more powerful uninstaller like IOBit’s Uninstaller and also if you are going from Norton and or Mcafee to AVG. Norton and Mcafee  have been known to totally screw up an  operating system beyond repair.

Note: google IOBit’s Uninstaller there is a video that shows you how to use it. Good Luck

try that and let me know if it works