Outlook Privacy Plugin

A simple OpenPGP encryption plugin for Outlook 2010 and 2013.

About

Outlook Privacy Plugin is a security extension for Outlook. It enables Outlook to send and receive email messages that are encrypted and/or signed with the OpenPGP standard.

Installation

See the releases page for downloads and release notes.

0. Download

Download the latest release from the the releases page.

1. Install Gpg4win

Install gpg4win and import or create keys as needed. Verify you can see all expected keys from the gpg4win key manager software.

2. Install Microsoft.NET v4.5

Install v4.5 of the Microsoft.NET Framework. The download can be found via Google Search (the link changes).

3. Unlock Outlook Privacy Plugin Zip

This will prevent an error about certificates during installation.

After downloading the zip file, right-click → Properties, at the bottom click the "Unlock" button if there is one. Then unzip the file and install. Make sure the install files are located on a local drive and not a network drive.

3. Install

Close outlook and run the Outlook Privacy Plugin installer.

Features

• Microsoft Outlook 2010 and 2013

• Support for both 32bit & 64bit versions of Office

• Encrypt and decrypt email using OpenPGP standard

• Supports encrypted attachments

• Supports multiple recipients

• Decrypts PGP-MIME

• Decrypts OpenPGP blocks in HTML email

• Multiple email accounts (based on sender/receiver email)

Not Supported:

• Encrypting with PGP-MIME (planned)

• No support for HTML email (planned)

• This plugin is in BETA status and is based on an earlier plugin for Office 2007.

Known Issues

Install: The value of the property 'type' cannot be parsed.

This error can occur on installation on computers running the Office "ProPlus" SKU. The full message is included below. This is not an issue in Outlook Privacy Plugin, but an issue on Microsofts side. If you have administrative rights to the computer there is a work arround that can be done.

The value of the property 'type' cannot be parsed. The error is: Could not load file or assembly
'Microsoft.Office.BusinessApplications.Fba, Version=14.0.0.0, Culture=neutral, PublicKeyToken=71e9bce111e9429c'
or one of its dependencies. The system cannot find the file specified.
(c:\Program Files\Common Files\Microsoft Shared\VSTO\10.0\VSTOInstaller.exe.Config line 10)

Workarround

The full support thread on this issue is available here.

1. Find VSTOInstaller.exe.config and VSTOInstaller.config. They should be located in your Office installation folder.

2. Create a backup of each file

3. Open Notepad by right-clicking and saying "Run as administrator". Then open each file, one at a time.

4. Find type="Microsoft.Office.BusinessApplications.Fba.HttpFbaRequestCreator,Microsoft.Office.BusinessApplications.Fba,Version=14.0.0.0,Culture=neutral,PublicKeyToken=71e9bce111e9429c"

5. Replace with type="Microsoft.Office.BusinessApplications.Runtime.DeploymentAction.HttpFbaRequestCreator,Microsoft.Office.BusinessApplications.Runtime,Version=14.0.0.0,Culture=neutral,PublicKeyToken=71e9bce111e9429c"

Re-run the installer.