Solving "no valid copy" issues In addition to re-applying the Microsoft Office v.X 10.1.2 updater (noted yesterday), some users have been able to work around the "no ...

Excel is incredibly powerful when your data is complete, but what happens when you need to solve for unknown variables? Enter Goal Seek and the Solver add-in, two tools that let Excel do the heavy ...

Steven Nickolas is a writer and has 10+ years of experience working as a consultant to retail and institutional investors. Katrina Ávila Munichiello is an experienced editor, writer, fact-checker, and ...