Windows Update Failing

I try to do a windows update and it downloads perfectly but when it tries to install it keeps failing. I get the error code 80070643, i tried to follow the link to get help and tried to google it but cant understand how to fix it?.?

try this solution from Microsoft.

bgkykingpin said:

I try to do a windows update and it downloads perfectly but when it tries to install it keeps failing. I get the error code 80070643, i tried to follow the link to get help and tried to google it but cant understand how to fix it?.?

I don't know what you tried.This error relate to issues with system transaction logs:

Try different methods to reset system transaction logs:
CLFS transaction logs - Reset