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Upgrade ESET Mail Security for Microsoft Exchange Server to the latest version (6.x)


Existing customers with a valid business license for ESET Mail Security for Microsoft Exchange (EMSX) may upgrade to the latest version of the same product for free.

Before upgrading to version 6.x

  • ESET Mail Security 6 for Microsoft Exchange can only be managed using ESET Remote Administrator 6.2 and laterClick here for information about upgrading to the latest version of ERA.
  • Perform a System State backup on your Microsoft Exchange Server. See the following Microsoft Knowledge Base article for assistance.
  • Make sure that you have your ESET Mail Security for Microsoft Exchange Server (EMSX) License Key available. If you have lost this information or need to request your license information, visit our Lost License page.
  • When upgrading EMSX from version 4.3/4.5 to 6, users will need to recreate all rules manually—there is no option to import user defined-rules.

Before upgrading from version 4.5, complete the pre-installation checklist:

  1. Disable self-defense in EMSX version 4.5 and then restart the computer.
  2. Uninstall EMSX version 4.5 when upgrading to version 6. If you discover issues during the uninstallation of EMSX 4.5, Uninstall ESET manually using the ESET uninstaller tool.
  3. Restart the computer after uninstallation of EMSX is complete.


  1. Download ESET Mail Security 6
  2. When the download is complete, double-click the installer file to launch the ESET Mail Security for Microsoft Exchange Server installer. A restart will be required during the installation of EMSX 6.
  3. Click Next.

    Figure 1-1

  4. Select I accept the terms in the License Agreement and click Next

    Figure 1-2

  5. Select Complete and click Next.

    Figure 1-3

  6. Click Install.

    Figure 1-4

  7. When prompted to restart your computer, click Yes.

    Figure 1-5

  8. After the computer restarts, the installation will resume. Once the installation is finished, you  will be prompted to activate your product using a License Key. Enter your ESET-issued License Key into the blank field and click Activate (if you do not have your License Key, click here to have your license information sent to you).

    Figure 1-6
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  9. After a successful activation, click Done.

    Figure 1-7
    Click the image to view larger in new window

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