I have problems with Adobe acrobat DC. One is similar to previously reported - I cannot maximise or even resize in any direction the Acrobat Pro DC window. Run in AppContainer is not ticked. The real problem however is that I can no longer save files after editing them. Either Acrobat hangs and has to be shut down by Task Manager, or more commonly the Save As window is blank and doesnt respond.

THanks I will check. I had not realised I could "exit". Assumed I had to uninstall which I was reluctant to do, as it is so useful in every other way.

Ok so exited DF and now the Acrobat DC (the pro not the reader) maximises and resizes. So it does not persist when I exit.

I can confirm the problem as well.
The problem is only for Adobe Acrobat Reader 64bit - the problem is that the window's maximize button (and title bar context menu entry to maximize) does not function at all with DF running (tried the latest beta with no change)
Problem is not apparent with the 32bit version.

The 'Maximize' DF custom titlebar button does work.

disabling the application hooks allows the maximize button to work

Thank you doctor. This worked.
"The 'Maximize' DF custom titlebar button does work"
I do not really use advanced features of DF - mainly just use it for dividing an ultra wide screen. I was not aware that I could maximise via the titlebar button. This works perfectly now - many thanks.
What do you mean by application hooks?

Under the 'compatibility settings' (DF settings, see compatibility tab on the left) one can tweak certain aspects of DF for non-compliant programs.
Hopefully the programmers will address this compatibility problem.
I think this all goes back to this unique window type (a known problem maker) under 64bits.

Interestingly disabling the application hooks means that maximise goes to the whole screen (ignoring the monitor split in DF), but using both of your workarounds enables me to resize or maximise as preferred.

So thank you very much once again.

Acrobat Pro DC (version 2021.007.20099) 32 Bit version

I can now confirm that problem is evident in both 32bit and 64bit releases of the latest Acrobat Reader.
Just tested AcroRdrDC2100720099_en_US (32bit).

[This latest update (at least on 64bit) also breaks some printing on HP printers.]

it is a mess ...

Thank you for your prompt and helpful attention.

Just to clarify. This has been a problem for me with Acrobat Pro not Reader and it has been the 32 bit version. There is a limited version (for UK and only a few other countries) of the 64 bit version of Pro, but I have not yet tried it.

Sorry, can someone explain what customizations they made in DisplayFusion to allow Acrobat to be maximized?

Update: Looks like changing a setting in Acrobat fixed it for me.
In Edit -> Preferences -> Security (Enhanced), I unchecked 'Enable Protected Mode at startup (Preview)' and 'Run in AppContainer'.
No clue why I need to do this, but at least its working.

It works. Many thanks for fixing this. I use Acrobat Pro a lot and this has made a difference to me.

Works perfectly!
Thanks

This also worked for me. Thanks for posting this workaround.

Could someone tell me if this fix has been incorporated into DisplayFusion Pro 9.9, or do I still need to go and download the beta version?
Im running Acrobat Pro DC on Win 11 and having this same old issue.
The fix I mentioned above (post #15) no longer seems to work. This might be because Im now on Windows 11, whereas I was using Windows 10 when speaking about that fix.
I can attach a video if it would help, but when I launch Acrobat DC with DisplayFusion running, it'll open in a window and I can move it around. As soon as I maximize the program to a split, the program freezes. I cant minimize, I cant click on any menus...nothing. After maybe 20-30 seconds, it'll unfreeze. I'll move to another split, and itll happen all over again. As soon as I close DisplayFusion, Acrobat will work without issue.
Basically I cant run Acrobat DC while DisplayFusion is open.
Please let me know what info I can provide to try and help fix this issue.
Thanks
Update: attached video to explain exactly what is going on.
I should have included in the video that in Preferences -> Security (Enhanced), Enable protected mode at startup is unchecked and Run in AppContainer is greyed out.
Also, Acrobat Reader works just fine with the protect mode/run in appcontainer settings unchecked. This seems to be an issue with Acrobat Pro DC. Hope someone can point me to some settings I may not be aware of to fix this. Thanks!

Ref:
Windows 10 64 bit
DisplayFusion 10.0.1 (Beta1)
Adobe Acrobat Version 2023.001.20143. 64-bit
I am having issues with Adobe Acrobat when maximizing. If a monitor is split (via DisplayFusion), Acrobat maximizes outside of screen. Window controls are then outside of screen and I need to close the program.

Edit: I should add that I had edited the Compatibility properties for Acrobat (right click / properties / Compatibility / Change high DPI settings / Override high DPI scaling behavior) so that Acrobat would not freeze when maximizing window (with DisplayFusion installed).

Sure. You need to find the executable Adobe.exe (C:\ProgramData\Microsoft\Windows\Start Menu\Programs)

Then right-click on it and select Compatibility. Screenshot attached.

Hi, I'm having this issue now and am on the latest beta. My reader completely freezes up for a while when I lock it to one of my "screens" that are partitioned on my ultrawide with DF. I am running Win 11 latest build, DF latest build, Adobe Acrobat Reader 64-bit (Continuous release, current version 2023.001.20174).

Problem goes away when DF is closed. It gets messed up anytime I move it to a new DF window (1.1, 1.2, or 1.3) and it locks into that window. The app almost crashed and then eventually starts working again. When I hold shift to maximize to full screen, it works fine, seems to be entirely related to the "Window Position Profiles".

FYI, see my post above, wanted to let you know about my issues on this.

np! Let me know if you need more info.

Working correctly in Reader on Beta 4! Thanks!