The problem is that Microsoft will not let you open both versions of Word at the same time. Your software isn't glitching – the reason you can't open two instances of Word at the same time has ...

If Word document files are opening or running slowly on your PC, or it lags when typing, use these methods to make run Word faster.

If you can' type in Word, then you must activate Office or remove the document protection to remove the Selection is locked message.