What version and year of Sage 50 are you using?

Sage 50 Premium 2014

What version?
If you have no subscription like me then the April 19th time bomb inside of sage 50 went off, I am running 2014 just 2 years old and now I must fork over 400 bucks to upgrade software to 2016 and have a yearly subscription. Then and only then will my payroll work. Welcome to the corporate greed of sage.

Backup you data, then reinstall your Sage software on a system not connected to the internet
payroll should work again, but if you reconnect to internet you will lose that feature again, or pay Sage ransom money
to use payroll..