@Jesper - thanks. I do see that option. I hadn't seen the original update by Ayush, but for some reason I've gotten several update emails the past few days. One of those updates from earlier today - a comment by Anonymous - said to set the option using the 'File > Properties > Initial View > Window Options' screen. My installation doesn't have the 'Initial View' tab on the Document Properties screen (though it is on the screenshot that Anonymous included). In any case, it's good to know that I can set it globally on the 'Edit > Preferences > Documents' configuration page.

@Willam Fruth: As Ayush Jain from Adobe said 2020-08-12 (see above):

"To enable the preference, go to Acrobat preferences, and click Documents in the left pane. Under Open Settings, select Always Use Filename As Document Title."

That settings does in fact exist in my installation (Adobe Acrobat DC, Continuous Release version 2021.011.20039), and it seems to work.

First - glad to see there is a fix. I'd stopped using Adobe Reader because of its huge resource demands, but just checked again and see that the filename shows up in the title bar.

Second - Even though fixed, the 'File > Properties > Initial View' tab does not exist in my installation (Adobe Acrobat Reader DC, Continuous Release | Version 2021.011.20039).
(Check for updates says I'm up to date).

In any case, the Document Properties would not be a good location for this option, as this should be a global option. To that point, I checked the 'Edit > Preferences' menu and don't find the option there either.

@Dimas Haribowo

It is under File > Properties > Initial View > Window Options

Show: should be set to File Name

Pleas help, I dont see the options to use file name instead of TITLE.. (screen shoot attached)

Are you going to do this for other versions of Acrobat Reader? DC is so slow. I sometimes don't have good internet connection and then DC seems to take an eternity to launch a file. I suspect it spends a lot of time trying to do some sort of communication that has no value to me. I had to go back to an older version.

Thank you!! Just found the option in my Acrobat Reader DC and checked it. The tab changed as soon as I closed the preferences window. Yay!

What about Acrobat Pro?

For the sake of accessibility, the document title is good to have instead of file name. But now the document file name is on by default and I cannot find an option Always Use Filename as Document Title in Preferences under Open document setting where I could change the default back to document title. Where's the problem?

Not finding this option of "Always Use Filename As Document Title" in my Acrobat reader 2017

THANK YOU for implementing this change.

It works well, is very helpful and greatly appreciated!

This issue has now been solved - it's great! Does anyone have issues with 'adobe acrobat dc could not open because it is either not a supported file type... or it is damaged'? I have never had this issue since the update and now it happens multiple times a day!

Please add this option, nobody uses document titles and if you haven't created the pdf document (which is most often the case) filename is crucial as titles are often the same

Yes please! This is so frustrating! It's the same problem in Acrobat Pro 2017

For people who are saying an option is needed for Advanced Search, there already is one. I'm using Acrobat 10 and in Preferences/Search there is option "Show document title in search results". Uncheck this and the file name is used.

Very annoying, please change so that I can see the file name in the titlebar. Thanks

When you have multiple versions of a document open all with the same title, how do you tell which one you're looking at?

Please add this feature to Acrobat DC. It is not feasible to change the name of every file manually and the correct information must be displayed to be useful.

change please, even sumatra a simple pdf view has this option!

A workaround is to set DisplayDocTitle property in PDF file to false. This instructs compatible PDF viewers (including Acrobat Reader) to ignore the Title and use the file name instead. Coherent PDF provides a command line utility (cpdf) that can do this. To set a PDF's DisplayDocTitle to false:

cpdf -display-doc-title false <PDF file>

A batch file can be used to convert multiple files at the same time.