Adobe Acrobat Pro DC freezes for several seconds after opening a PDF - Windows 10

Same problem as everyone else.    Acrobat DC hangs on launch for 10-20 seconds every time it opens.    I disabled enhanced security, and mine still hangs.    Very annoying problem for my users, as they open PDF from email all day long, and don't just leave acrobat running all the time.  Meaning, they getting the adobe spinning wheel of death 20 times per day.

Windows 10 Pro version 1809

Adobe Acrobat DC 19.010.20100

Same trouble there with Reader DC 2019.010.20098

Removing signature check fix my problème.

Thank you

my win 10 laptop, no issues. My win 10 desktop, "not responding" as soon as I click on literally anything in the program window.

I can't even try the "fixes" that that has been described in this thread because no matter what I do, it goes into "not responding" mode as soon as I click.....

I figured that disabling the Sandbox property minimizes freezing.

Goto:

Preferences->Security (Enhanced)->Enable Protected Mode at startup

and disable this feature.

Probably not the best way concerning security but that bloody annoying freezing is almost gone now.

The problem is somewhere in the code. Forget antivirus and similar stuff. If you open a large document and once it is opened scroll down with mouse you have no freeze at all. BUT once you stop the mouse Acrobat try to do something that freeze the document for some seconds. So it is something inside the program that is executed once at program start. Indeed if you leave the acrobat opened you have no problem at all on next files

I've had this same problem for weeks. Anytime I open an adobe file while an instance of Adobe is not already running, it will freeze for at least 5-10 seconds. Contacted Adobe and they "remoted" into my computer to witness the freezing. However, as part of the remoting, they required elevated privileges. At this point, the freezing quit occurring. It seemingly relates to startup checks (whether online or local) for which most normal Windows 10 users do not have permission.

This problem has been around for a while, and many people are experiencing it. Adobe needs to address this issue promptly. Creating a "hidden" admin account is not a solution.

I too have this problem appearing. It was on other versions and now it's back again. Very annoying and neither is Adobe being helpful on this.

I have now turned off signature verification and disabled Collaboration Synchonizer and restarted my system.  There was still a good 15-second delay on startup (despite letting the computer settle after restarting and before opening Acrobat).  I'll monitor throughout the day and report back.  In the meantime, I wonder if anyone else on this thread is using both Acrobat and Quickbooks on the same computer where the issue appears.  I've noticed strange interactions between those two products in the past.

Thanks

I don't consider this a solution but I find the best work around is to open Adobe Acrobat DC directly and not by opening a PDF, then opening the PDF. There is still a freeze up initially but it's much shorter. Then don't close Acrobat only close your PDFs. Leaving Acrobat running seems to eliminate the freeze ups. I'm not used to that so if I do accidentally close Acrobat it always freezes when I reopen it however when I leave Acrobat open only closing the PDFs I don't appear to have any freeze ups.

We have Windows 10.  Signature verification checked off in Acrobat.  Reader is not and has not been installed.  Acrobat Pro DC is the only Adobe product on the PC.

I agree with cglassen -- it seems that once the "freeze" is done, the online ID pops up in the upper right corner to show it is connected.

Each of my people has their own Adobe ID that they register the software with, since this is the DC (subscription model) software.  The software is installed and registered.

Adobe, do you have an update for us on this?  Is this something you can reproduce?  Do you need a PC that you can remotely look at that is having this issue?