Adobe not scanning multiple pages/Scan Options grayed out

There are two dynamics when working with computers: getting the job done the way it's supposed to work and getting the job done.

I'm on a Mac, and I've seen this issue for years. For whatever reason, it doesn't seem to be solved. I do not work for Adobe, so I cannot say what the issue is nor why there are issues solving it. 

What I recommend for you to "get the job done" is to do the following

1) use the software that came with your scanner.

2) scan the stack of papers and have them saved as TIF* documents in a convenient location.

3) Once the scan is complete, select them all and either (A) drag them onto the Acrobat icon in your app bar or (B) open File (menu) -> Create -> Combine Files into a Single PDF.

Note: dragging the files onto the icon on the Mac Dock works; I'm not entirely sure how this works on a PC. If it doesn't work, do "B." If you do "B" when you select that option, all you have to do is to select the folder and sit back. It will convert the images into a PDF and OCR them.

* If you save the files into other formats (e.g., jpg or png), Acrobat will not automatically OCR them. However, if you save them in TIF format, it will.

I have experience (with FujiSCAN) that multi-sheet feeder software can convert them into PDF, but their OCR is not very good, and the file sizes are very large. However, you can take the final PDF from their software and run them through Acrobat for much better results. I suggest you test to make sure before you commit to a long process.

Speaking of long processes, Acrobat does not play nicely with other applications. Acrobat will prevent you from doing anything else during the OCR process, even reading emails. After each page is processed, it will jump in front of what you're doing and let you know a page was completed. For very lengthy documents, I found it best to have lunch breaks, coffee breaks, whatever.

Good luck.