Use following registry keys to disable Help > Sign In/Sign Out
For Continuous Build:
[HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Adobe\Adobe Acrobat\DC\FeatureLockDown]
"bSuppressSignOut"=dword:00000001
For Classic Build:
[HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Adobe\Adobe Acrobat\2015\FeatureLockDown]
"bSuppressSignOut"=dword:00000001
by Karan Malik on Nov 18, 2015 10:32 AM