Adobe Acrobat Reader DC

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For a list of known issues and more in-depth troubleshooting, see Troubleshoot Adobe Reader installation Windows. To see if other users are experiencing similar download and installation problems, visit the Acrobat Reader user forum. IWDEFAULTVERB interacts with the Adobe property LEAVEPDFOWNERSHIP. NO allows the new install to own opening PDFs. LEAVEPDFOWNERSHIP is often used for silent installs where the user should not be asked to select a default PDF viewer. YES prevents the new installation from taking over PDF ownership if PDF is already owned.

Version 2019.012.20036

Your system:

Mac OS (Intel) 10.5.8 - 10.14, English

About:

Adobe Acrobat Reader DC software is the free global standard for reliably viewing, printing, and commenting on PDF documents.

And now, it's connected to the Adobe Document Cloud − making it easier than ever to work across computers and mobile devices.

It's the only PDF viewer that can open and interact with all types of PDF content, including forms and multimedia.

Acrobat Pro DC Trial

Or to do more, install free Acrobat Pro trial to create and edit PDFs. Continue viewing PDFs after trial has expired.

Take control of your work with Adobe Acrobat DC. Create, edit, sign and review documents in real time with your team, wherever and whenever you want.

Default viewer¶

Note

Windows 10 environments require using DISM and GPO configuration.

When Reader and Acrobat are installed on the same machine, you can choose which viewer is the default for PDF files. In some cases, this choice is critical as Reader has a built in Protected Mode which is more secure. For security details, see the Application Security Guide.

To select a default viewer, choose one of the following:

• Installer will decide which product will be the default: The installer decides which application should open PDFs based on the product to install and the values of IW_DEFAULT_VERB and LEAVE_PDFOWNERSHIP. In general, the install leans towards letting the more secure Reader be the default viewer unless a property or user choice overrides that decision.
• Make Reader the default PDF viewer: For Reader MSI modification only. Sets IW_DEFAULT_VERB to Read.
• Make Acrobat the default PDF viewer: For Acrobat MSI modification only. Sets IW_DEFAULT_VERB to Open.

Note

IW_DEFAULT_VERB is written to the MST file and doesn’t exist in the installer tables by default. It can also be used on the command line or in the Setup.ini file.

Choosing a default PDF viewer

Property interactions¶

IW_DEFAULT_VERB interacts with the Adobe property LEAVE_PDFOWNERSHIP. NO allows the new install to own opening PDFs. LEAVE_PDFOWNERSHIP is often used for silent installs where the usershould not be asked to select a default PDF viewer.

Reinstall Acrobat Dc Pdf Browser Plug In

• YES prevents the new installation from taking over PDF ownership if PDF is already owned. However, if the PDF mimetype is currently un-owned, take ownership.
• If this property is unset or not present, the current install assumes ownership.

Reinstall Adobe Acrobat Reader

Locking PDF ownership¶

Adobe Acrobat Pro Silent Install Switches

By default, users can select the default handler through the UI. However,administrators can lock the feature by setting[HKLMSOFTWAREPoliciesAdobe<product><version>FeatureLockDownbDisablePDFHandlerSwitching to 1 so that end users cannot change the default handler.