Acrobat pro want launch after Win 11 24H2 update

[Peter22440460bx94]

My Acrobat Pro won't launch after I installed the Win11 24H2 update.
Acrobat distiller works as does LR & PS.
When acrobat is started no window opens but it can be seen in the task manager.
I have uninstalled via Creative Cloud but now I can't re-install as it gets stuck at 30%.

Anyone else having this problem after updating to Win11 24H2 (full official release, not the pre-release version)

[Roger2021]

Thank you! This worked for me.

[BlueSky Studio]

Same problem. I uninstalled the update. works now.

[S. S]

Hi @BlueSky Studio,

We are live with the new release (2024.005.20307) which has a fix for the issue. 

Please update the app and let us know if it helps.

You can check for it by going to Menu-> Help-> Check for Updates.

-Souvik

[Jacopo Bellini]

I just installed latest version 24.005.20320 but still not working, I still have to run it in Windows 8 compatibility mode!!!  Can you please let us know when this will be fixed??!!!

[S. S]

Hi @Jacopo Bellini,

If you are able to launch Acrobat with Compatibility mode, would you mind trying the below steps:

1. Go to Preferences-> Security(enhanced)-> uncheck "Enable Protected Mode at Startup."

2. Disable Compatibility mode-> try launching the app again.

3. Also, please help us gather the logs from your machine: https://helpx.adobe.com/acrobat/kb/acrobat-diagnostics.html. Please make sure Procmon is selected. You can upload logs using this tool and share your Unique log ID with us. 

When trying out the above steps, please keep the Acrobat Diagnostics enabled, and allow it to record the entire event.

Thanks,

Souvik

[Jacopo Bellini]

Hi,

thanks for your reply.

Go to Preferences-> Security(enhanced) where do i find it? Is it ctrl+k once a pdf is open?

[S. S]

@Jacopo Bellini,

It would be ctrl+K once Acrobat is launched.

Also, please make sure to run the Diagnostics tool while you do this. This will help us analyze the event and get to the fix quicker.

-Souvik

[john_8599]

I am not even able to open the installers, I have tried both acrobat and creative cloud 32 bit installers. I run them, I can see them running in the task manager, but nothing happens from there. I've tried compatability mode, and I obviously can't get into the app to change the protected mode. Any other things to try?

[S. S]

Hi @john_8599

If you are using a 64-bit system, would you mind trying to install the 64-bit version from the given link: Download Acrobat installer for Enterprise term or VIP license

Let me know how it goes.

-Souvik

[Zorik5E35]

I can confirm unchecking "Enable Protected Mode at Startup" and disabling "Compatability mode" works for me.  Version 24.005.20320.

[ElevatorGuy27]

I can also confirm that with Windows 11 24H2 and Adobe Acrobat Pro 64-bit Version 24.005.20320, with the FileOpen Client 64-bit Build 998 that:

1. Without any changes, Adobe Acrobat Pro initially will not open. Acrobat.exe App tasks are visible in Task Manager, but no window appears on the screen.

2. In File Explorer, changing the Compatibility settings on Acrobat.exe for Windows 8 allows Acrobat Pro to open (provided all previous "stalled" Acrobat.exe Apps are killed off first)

3. Going to Preferences-> Security(enhanced)-> unchecking "Enable Protected Mode at Startup.", and then exiting all running Acrobat Pro instances and going back to File Explorer and disabling Compatibility for Windows 8 allows me to start Acrobat Pro successfully, and to open up FileOpen protected PDF files.

4. Going to Preferences-> Security(enhanced)-> checking "Enable Protected Mode at Startup." again, and then closing and attempting to re-run Acrobat Pro gets me back to the same state as Step #1.

What this tells me is that "Enabled Protected Mode at Startup" is still not possible when NOT running in Windows 8 Compatibility Mode, which seems like this leaves Acrobat Pro with a potential "security hole" in its execution environment.

In other words, this is still a "workaround" rather than a "permanent fix" to this issue and more work is needed by Adobe, FileOpen and/or Microsoft to get back to the way things were functioning (in all regards) prior to the Windows 11 24H2 update being installed.

Please continue to work on a permanent fix!

[Jacopo Bellini]

it works also for me!

[S. S]

@Jacopo Bellini @ElevatorGuy27 @Zorik5E35,

Thanks for letting us know what worked for you.

We are aware of the situation and are working on a permanent fix. It should be available soon.

Thanks,

Souvik

[michael_3964]

Has there been any official fix for this yet?

[Peter22440460bx94]

No.

If you use this plug in for work purposes I.e. reading standards, I would suggest you contact the publishers/ distributors of the document with DRM and complain. All the solutions weaken the security of your companies IT infrastructure.