If you see an error message: ' Acrobat failed to connect to a DDE server' open Adobe Reader and select Edit > Preference > General, and uncheck “Enable Protected Mode”. Once the pop-up is enabled, it may open automatically, or you may need to refresh the page you were on.Ħ. Look also for pop-up alerts near the top of the browser and enable the pop-up if you trust the site - the publishers' sites that we link to may be trusted as they are known to us. This should permit the download to go ahead next time you download a file from the host.We have done so for Ingenta - see the link to a separate FAQ on this.ĥ. Another thing to try, in Internet Explorer, is to add the host site to the Trusted sites policy, go to Tools > Internet Options > Security tab > Trusted sites (green tick) > Trusted sites button > add the host to the zone, for example *. > click on Add button and Close and OK (server verification is not required). If you still have a problem opening a PDF please also try changing your connection speed setting: open Adobe Reader, go to Edit > Preferences > Internet and under 'Internet Options' change the connection speed from 56 Kbps to 112 Kbps.Ĥ. Refreshing the page will change the behaviour to read the PDF inside the browser frame.ģ. If you still encounter a problem you can also fix it by choosing Tools > Options > Applications tab > look for a drop down for Adobe Reader (or Adobe Acrobat) which should be switched to 'Use Adobe Acrobat in Firefox'. Firefox may report that the Adobe Reader plug-in needs updating - just click on the grey icon to open the PDF. Firefox is available from the Start menu > All Programs > Central Software folder > Browsers folder > Firefox 24.0 (or later versions).

Depending on your new setting the PDF should open, either inside the browser or, if you selected Open PDF outside the browser, a new Adobe Reader window should open, this time outside the browser with all the content displayed.Ģ.

Then close down Adobe Reader so that the setting change takes effect. Open Adobe Reader, go to Edit > Preferences > Internet and either tick, or untick, “Display PDF in browser”. There are several other remedies to try listed below.ġ. Try right-clicking the link to the file and open it in another tab or another application like Adobe Acrobat DC Reader. When trying to view e-journal articles or files on Blackboard Learn, or from other sources, some files may open inside a browser window but display as a blank, or grey space, or the file may not finish downloading.

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