Start with a reboot; this frequently corrects the problem. Reviewed by Ryan Perian Restarting your computer is often the simplest first step to fix a Code 43 error ...
Before diving into the specifics of each of these Device Manager error codes, it’s worth noting that many problems can be avoided by keeping device drivers updated ...
After running Time Machine smoothly for a while, users may run into a problem wherein Time Machine will not back up anymore and will give an "Error -43" message ...