I recently started experiencing Acrobat hanging on fullscreen slideshows.

Question

I have a large number of pdf slideshows created by Adobe Lightroom, some old, some recent. They all started hanging in fullscreen slideshow mode after showing four images, regardless whether it’s an old file or recent one, and always after showing 4 images whether I start at the beginning or anywhere in the middle.

I found this is related to full-screen transitions. If I set "Disable Full-Screen Transitions" and enable "Advance every" N seconds then the slideshow proceeds albeit without transitions. If I don’t disable transitions and even with “Default transition = No Transition” the slideshow hangs after exactly four images. At this point it looks like a regression failure in Acrobat.
Details:

Acrobat version: 26.1.21677
Windows 11
Event Viewer records AppHangXProcB1 for Acrobat.exe

Anand Sri Bhattacharya · Accepted Answer

Hello @Elena36635496uzf1,I hope you are doing well, and thanks for reaching out. We're sorry for the trouble you had with the app.Could you please share more details about the issue and the workflow so that we can assist you better: Is this Acrobat Pro or Acrobat Reader? Go to Menu > Help> About Adobe Acrobat, and check the details.Does the behavior reproduce in both Reader and Pro, or only one of them?Are hardware graphics acceleration and Protected Mode at startup currently enabled in Acrobat's Preferences? You can check this from Menu > Preferences > Security Enhanced, General, and Page Display.Can you confirm whether the issue occurs with non‑Lightroom PDFs that also use full‑screen transitions, or only PDFs generated by Lightroom?For testing purposes, please disable the Protected Mode at startup, and Enhanced security from Menu > Preferences > Security (Enhanced) > turn off the options. Then check the functionality. Please enable the settings after the test.If the issue continues, please collect the logs from the affected machine and the PDF file through which you are able to reproduce the issue, and share them with us for further investigations. To collect the logs, please check this article: https://adobe.ly/4uHn3RoRun the Log Collector tool. Ensure that you select all log options and attempt to reproduce the issue. After that, close the Log Collector tool; it will generate the logs along with a log ID. Please share this log ID with us for further investigation.Regards,Anand Sri

Elena36635496uzf1 · Answer

How is that a correct answer? Its not an answer at all. This is an obvious Adobe bug, they shouldn’t tellusers todebug their problems. There is more than enough information for Adobe engineers to reproduce and fix it.

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