When you re-launch Adobe Reader, the dialog shown in step #2 will reappear. In the 'General' tab, enable the option 'Enable Protected Mode at startup.' Protected Mode is one of the most powerful features in Reader’s security arsenal. It transparently protects users against attacks by sandboxing application processes. Inside Adobe Reader X, click on the Edit menu and select 'Preferences.'ĤB. Protected Mode Protected Mode (PM) was introduced with Reader 10.0 on Windows. If you need to get back to the original dialog shown above in step #2, here's how.ĤA. You should now be able to open PDF files normally in both Adobe Reader and Internet Explorer. If Internet Explorer is open, close it and then re-launch it. To enable viewing PDF documents, select the option 'Always open with Protected Mode disabled.'ģB. In Adobe Acrobat Reader DC, does anyone know how to prevent the sidebar from opening by default It is not so bad when a PDF is in portrait mode, but it takes up too much visual real-estate when opening a PDF in landscape mode. Do not open with Protected Mode disabledĢA. Always open with Protected Mode disabled Would you like to open Adobe Reader with Protected Mode disabled? If it's the first time you have launched Adobe Reader X, you might see a dialog like this:Īdobe Reader cannot open in Protected Mode due to a problem with your system configuration. Click on the Start menu, go to All Programs, and then click on Adobe Reader X.Ģ. Revert to an Earlier Version of Adobe Reader. Repair Adobe Reader or Acrobat Installation.

Update Acrobat Reader to the Latest Version.

You might see only a dark window when accessing a PDF file inside Internet Explorer. Part 2: Top 4 Methods to Fix Adobe Reader Cannot Open PDF Files in Windows 10/11.

Under the View tab, click Full Screen Mode. On ECN-supported Windows 7 computers, default settings in Adobe Reader X might cause problems reading PDF files. With Adobe Acrobat Reader, you can present a regular PDF in similar fashion to a PowerPoint presentation.

How to open adobe reader in read mode