What exactly causes these minor things. I will give some examples…
I print fine all day. I open a file and it prints two sheets. I got to start, Printers, right click on my printer go to set up and boom the default copy now says 2. I switch it back to two and boom it prints fine.
A coworker prints off of word fine then boom suddenly one document starts printing everything underlined. I can’t find anything to indicate this should be. If you preview it it doesn’t show. She emails it to me. Boom it prints fine. All of her other documents print fine except that one. Deletes document remerges it and boom everything is fine.
Or I print fine to the Sales printer, then I print again and it goes to a different printer. Check properties and boom it is defaulted to the sales printer yet prints to catering printer. Shut down program, restart program, printer is fine.
I am sure a lot of people experience similar things. But what I am wondering is what causes these issues. Could it be a virus or worm?
I am not interested in, Per say, the above examples but why does it happen?