Missing preflight profiles

Question

Before you jump on my case, let me point out that yes, I did search for this issue, and yes, I did find lots of responses, and yes, I did try them multiple times, and no, they did not solve the problem.

Windows 11, Acrobat Pro.
I recently changed my subscription from lots of apps to only Acrobat Pro, and now I have this problem.
I've uninstalled, run the Acrobat Cleaner, reinstalled, turned off the security settings, and tried to run both of the preflight functions. Multiple times, with hard reboots.
The only profile ever displayed anywhere is one that I made earlier, in an attempt to figure out what the issue was. That profile (library) cannot be deleted, BTW, even by an uninstall or the cleaner. I am only able to run Preflight by using this custom profile, since nothing else is displayed anywhere.

Unless I can get that function working there is no reason to subscribe to Acrobat at all. Assuming the explanation provided (security lockout) is correct, it's pretty darn silly of Adobe not to just install the profiles when installing the app in the first place, when you have full admin rights.
In any case, if I can't utilize that function I will cancel my subscription.
Thanks.

timo_0928 · Accepted Answer

Hi there, an important note here, which I think is ultra important. Also for the developers at Adobe. This might be the reason why TL321 and tobij39213645 might not be working for you!

I think what happens: When you start Adobe Acobat and install the preflight stuff and start it the first time, you probably get a warning that certain things could not be copied. When this happens, the Profile groups are already broken and cannot be fixed. I believe, that adobe creates empty files somewhere. When they are there, it won't try to create them ever again! (Unless you do clean install)

So what you ALSO need to do is to prevent the safety stuff / modes that you have probably read everywhere too. So as extension to the previous answers:

Make a clean install
Disable the safety stuff
THEN install the preflight tools
Hopefully it works then

I did it differently because i noticed this too late, but i would try the other stuff first. What I did:

1. Install adobe and preflight tools

2. Then i bricked my profile groups when I started preflight with safety stuff turned on

3. Then i disabled safety stuff

4. And THEN I did what TL321 said, basically creating a new own profile group which derives from another group.

5. Then it was done.

Hopefully this helps someone. And get this stuff fixed. It costed me 3 hours!

TL321 · Answer

I also lost all the Preflight Profiles in Adobe Acrobat. I re-installed Acrobat but it didn't help. And I don't have the authority to delete the folders mentioned in the other solution on this page. Also, I have a lot of Adobe apps installed with many personal settings and things, so I really don't want to uninstall everything and delete their folders.

I found another solution/workaround to this problem:

1. I opened the Preflight window in Adobe Acrobat.

2. I opened the dropdown list at the top, where it says "Essentials" (or one of the other librarys's name).

3. In the dropdown list I clicked on "Create new Library".

4. In the Window that appears, I first gave my new library a name, and in the "Initial set of Profiles" I choose one of the four original librarys (that had lost their profiles): "Prepress...", "PDF Standard", "Acrobat Pro..." or "Essentials".

5. The original profiles will then appear in my new Library:

Source:

https://community.adobe.com/t5/acrobat-discussions/missing-preflight-libraries-from-print-production/td-p/13651523

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