What is the default SA password for SQL?

I'm trying to install solidworks electrical 2018 side by side with 2017. When I alter the electrical install to target an existing database, it tells me the tew account does not have ALTER ANY LOGIN privileges. The domain group policy does not allow debug rights, thus a new database instance does not complete. I can drop from the domain, but that would be a terrible pain for as many computers as I need to upgrade. 

My question: what is the default sa password? 

The defaults I'm familiar with do not work (blank and Password123)

SolidworksElectrical