Adobe reader 11 Hang during 1-2 minutes when opening a file

Question

Hello,
We are very unhappy with Acrobat Reader. We have Some Hangs/Crash into us computers.
With adobe acrobat reader upper tan 11.0.3  hang when start (open a file) during... approx 2 minutes.  During the Hang, Acrobat Reader be unresponsive.
I tried to change the protected mode. change nothing. I can saw is when Acrobat Reader start the Tools Menu (for me).
I tried to completely uninstall(registry and folders cleanup too) and do a fresh install, changed nothing.
If we use 11.0.3 or 10.0.X, we don't have problems.
Maybe the UTM firewall block something ?
I need help, why i think we going to use Foxit if we don't fund the problem.
Best Regards
Vincent

Answer 1

Hello,
No, i checked. I bypassed the UTM Firewall and do same.  
Yes, I can contact the cloud.acrobat.com, with or without firewall.
I bypassed the Anti-Virus, same problem.
I unchecked the "enable protection mode". Same.
I modified the registry to be like this :
64-bit:
Keypath:          HKLM\SOFTWARE\Wow6432Node\Policies\Adobe\Acrobat Reader\11.0\FeatureLockDown
Value name:   bProtectedMode
Value type:     REG_DWORD
Value data:     0
32-bit:
Keypath:          HKLM\SOFTWARE\Policies\Adobe\Acrobat Reader\11.0\FeatureLockDown
Value name:   bProtectedMode
Value type:     REG_DWORD
Value data:     0
[HKEY_CURRENT_USER\Software\Adobe\Acrobat Reader\11.0\IPM]
"bDontShowMsgWhenViewingDoc"=dword:00000001
"bShowMsgAtLaunch"=dword:00000000
I saw one way to investigate !    We got a shortcut here  (power injection tests) and the network switch goes off. During the network was disconnected, the Reader work. (Only a little hang of 1-2 seconds during opening file instead the 3-5minutes Hang ). I successfully reproduce them simply with disable the network card.
Please Adobe Team : Help me to investigate, to debug.
I saw nothing bad with ProcessExplorer. I do a minidump.
Which tool I can use to understand ?    Wireshark ?