What I know may or may not have anything to do with it, but probably does...
Adobe products are only sold by subscription services, also known as legalized force purchasing...anyway...if you had an installer for a product that is a subscription model it would require you to sign in before launching. If you don't, it simply shuts down and will not open anything until you do sign in.
Acrobat is not free. Adobe Acrobat reader is. Perhaps you were installing the non-free version by mistake.
This is the
Reader. That's all I do with pdf.
Seems to be back to normal now but the original one crashed and burned. It didn't give me a sign-in to set up or open; it did throw up a screen at some point when I first opened it that said something about signing in. I didn't see any point and closed it, and it hasn't been back. And the original one never did that.
Ah...than perhaps the installer has malware embedded. Unfortunately that is very common with Acrobat Reader.
Maybe that wasn't your case, but I only get the installer from Acrobat's own website. And I always choose "customize installation" and be sure any hidden programs are set to do not install. Even Acrobat puts in things like Norton products etc. in so you should never just click install..always check custom install