I've found that disabling the 'Modern User Interface' (in Preferences > Signatures > Creation & Appearance (More…) ) fixes the issue - however I have been unable to find a way to control this via group policy. We've got an issue on a 2008 R2 terminal server where signing documents using Adobe Reader is causing app lockups. Now if you add any more sites it will always only contain the last one you added.

Open Adobe Reader, navigate back to the 'Security (Enhanced)' settings and you will see that for some reason foo.com was deleted and only exists.Now you should see foo.com and in the list. Open Adobe Reader, add to trusted hosts.Open Adobe Reader, you should now see and foo.com as trusted hosts.Open Adobe Reader and add foo.com as a trusted host.Add as a trusted host in the 'Security (Enhanced)' settings.Adobe Reader will not let you add more than one trusted site if you delete the very first site from the trusted hosts before deleting the second one. The only way I have been able to get protected view to be disabled on these sites is by manually adding them to the trusted hosts within Adobe which is not the behavior I would expect.Ģ. I have ensured the 'Automatically trust sites from my Win OS security zones' option is checked, however the trusted sites are never trusted. This is causing issues on websites that try to call pdf's to automatically print. Adobe Reader is still opening pdfs in the IE trusted sites in protected view. Adobe Reader does not seem to be recognizing trusted sites in Internet Explorer. I have tested this with 11.0.08 and 11.0.07 and the issue exists in both, I just wanted to note this so there wasn't an impression this was introduced with 11.0.08.

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