How do I make Adobe Acrobat DC Standard view multiple documents as tabs?

[Chuck Hale]

This is supposed to be the "default" setting, but it is not even an "available" setting. If I go to Edit > Preferences > General > there is no box to check to turn this on and off. So, the option is not even available.

[Karl Heinz Kremer]

I assume you have the perpetual license version of Acrobat DC Standard. The multi-tab view was introduced only in the subscription version.

You have to different choices to license Acrobat DC: You can get a perpetual license version, which means one payment upfront, or you can get a subscription with monthly or yearly payments. Adobe is adding new functionality only to the subscription version.

[Chuck Hale]

Yes. I don't have the subscription. Solution? Download the reader for  FREE! The service is ironically available in the thing you can get for free but not in the version you buy.

[Test Screen Name]

Perhaps you didn't subscribe so you don't get feature updates.

[Test Screen Name]

Yes it is ironic. The permanent license version will only get feature updates every couple of years I guess, on a paid upgrade.