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Mimecast for Outlook - Download

Operating System Prerequisites

Either 32 or 64 bit versions of Outlook is supported, however a different installation package should be run depending on the version. Valid Operating System and Outlook Configurations include:



Operating Systems

The workstation where Mimecast for Outlook is to be installed requires one of the following Operating Systems:

  • Windows Server 2008 R2 (SP1)

  • Windows Server 2012

  • Windows 8.1

  • Windows 7 (SP1)

Outlook Version

  • Outlook 2013

  • Outlook 2010

  • Outlook 2007 (most recent Service Pack)

Note: Click-To-Run installs are not currently supported

Valid OS and Outlook Configurations

  • Windows 32-bit with Outlook 32-bit

  • Windows 64-bit with Outlook 32-bit

  • Windows 64-bit with Outlook 64-bit

Multi User Environments

  • Terminal Services

  • Citrix XenApp 6.5

Note: AppV streaming of the software is not supported

Multi User Environments - SQL Server Versions

  • Microsoft SQL Server 2008 or later

  • MySQL Community Server 5.6.21

.NET Framework

  • .NET Version 4 (minimum version supported)

  • .NET Version 4.5 (most recent supported version - from version 5.3 onwards)

For detailed prerequisites, click here.

There are two versions of Mimecast for Outlook available to download for Outlook clients, a 32-bit and a 64-bit version. Please note that the bit version to use depends on your Outlook install, NOT your Windows install. If your Outlook install is a 32-bit version you will need the 32-bit version of Mimecast for Outlook, despite whether your Windows install is actually a 64-bit version. The bit version of your Outlook install should always match the bit version of Mimecast for Outlook.

The Configuration Tool is required when installing in multi-user environments, allowing Administrators to modify Mimecast for Outlook settings before deployment. Administrators are able to create custom MSI files with the appropriate changes to the default settings, and once modified the MSI files can be deployed manually or automatically to a group of users.

Note: Please ensure that the corresponding version of the Configuration Tool is used alongside the relevant MSI version.

Download version Mimecast for Outlook 5.4


Mimecast for Outlook 4.X

Mimecast for Outlook 4.2 is no longer in active development. Mimecast will still address any security related issues should any be discovered in this version of the product. Customers are encouraged to migrate to the latest version of Mimecast for Outlook, as any new features will be introduced into this new version only.

Should you require a link to the downloads for this legacy version please contact Mimecast Support.



Viewing 2 of 2 comments: view all
I have MS Outlook 2010. Which files/version do I need to download?
Posted 17:52, 21 Nov 2014
The same file is used regardless of the Outlook version - so you just need to determine if you have the 32-bit or the 64-bit version of Outlook.
Posted 09:35, 24 Nov 2014
Viewing 2 of 2 comments: view all
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Last modified
11:35, 6 May 2015


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