Preflight panel won't open

This worked for me:

Close all adobe programs and navigate to the folder:

"C:\Users\[your_name]\AppData\Roaming\Adobe\Acrobat"

There is the subfolder "Preflight Acrobat Continuous".

Rename it (e.g. _old) so acrobat won’t access it but you still have it as a backup.

Open Acrobat and select the Preflight tool. For me, it opened and created a new folder "Preflight Acrobat Continuous".

Good luck!

Wondering if there's been an update with this issue from anyone else.

I was running into the same problem just today. I had a different installation which had this problem and which I didn't want to renew, I figured I might as well switch over to my school's enterprise account. I followed their instructions, and I ended up downloading version 2022.001.20117 via Adobe Creative Cloud Desktop as part of the enterprise account provided by my school. I noticed the issue persisted in this version as well, and came to googling for this issue and stumbled across this thread.

I went into the article mentioned by AmaL, https://community.adobe.com/t5/acrobat-discussions/how-to-reset-acrobat-preference-settings-to-default/td-p/4792082 , and not only did I delete the folder in Roaming, but I went back to C:\Users\[username]\AppData\ and also went into the Local and LocalLow folders, which both should have an Adobe folder containing a child "Acrobat" folder (probably more user preference and cache files stored there). After deleting all three associated Acrobat folders (in Local, LocalLow, and Roaming), I re-opened Acrobat DC and Preflight was working.

Not going to question the specifics or even what specific file/folder was causing the error, but all I know is deleting those preference/cache folders in my AppData folder worked for me.

Let me know if this is helpful to anyone who happens to stumble across this same issue.

Since the Preflight window is a floating one, and not docked to the application window, is it possible that it is open, but on another monitor - maybe behind another app?

My best,

Dave

Hi Melinda

Hope you are doing well and sorry for the trouble. As described the preflight panel wont open and you have tried repairing and removing and reinstalling the application with no luck.

Would you mind sharing the version of the application you are using? To check the version go to Help > About Acrobat and make sure you have the latest version installed go to Help > Check for updates and reboot the computer once.

Please try to reset the Acrobat preferences as described in the help page https://community.adobe.com/t5/acrobat/how-to-reset-acrobat-preference-settings-to-default/td-p/4792082 and see if that works for you.

Also, please try to create a new test user profile with full admin rights in Windows or enable the root account in Mac and try using the application there and check.

If it still doesn't work, please remove the application using the Acrobat cleaner tool -https://www.adobe.com/devnet-docs/acrobatetk/tools/Labs/cleaner.html  reboot the computer and reinstall the application using the link - https://helpx.adobe.com/acrobat/kb/acrobat-dc-downloads.html

Regards

Amal