[KB3553] Upgrade ESET Mail Security for Microsoft Exchange Server to version 6.x


ESET business product no longer supported

This content applies to an ESET product version that is currently in End of Life status and is no longer supported. This content is no longer updated. 

For a complete list of supported products and support level definitions, review the ESET End of Life policy for business products.

Upgrade ESET business products.

  • Best practices for upgrading ESET Mail Security for Microsoft Exchange (EMSX) to version 6.x


  1. Uninstall the previous version of EMSX
  2. Install EMSX version 6

If you have a valid license for ESET Mail Security for Microsoft Exchange (EMSX), you can upgrade to the latest version for free.

Before upgrading to version 6.x

The following requirements must be met:

Do not install over existing EMSX version 4.3/4.5:

You must uninstall the existing EMSX as it may result in a blue screen error (BSOD).

I. Uninstall the previous version of EMSX

  1. Open ESET Mail Security.

  2. Press the F5 key on your keyboard to open Advanced setup.

  3. Select Antivirus and antispyware from the Setup tree on the left, deselect Enable Self-defense and click OK.

Figure 1-1
  1. Restart the server.

  2. Uninstall EMSX version 4.x. 


If you encounter errors when uninstalling EMSX 4.5 using ERA, uninstall ESET manually using the ESET uninstaller tool.

  1. Restart the server after uninstalling EMSX. Continue to part II below to install EMSX version 6.

II. Install EMSX version 6

  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 EMSX 6 installation.

  3. Click Next.

Figure 2-1
  1. Select I accept the terms in the License Agreement and click Next
Figure 2-2
  1. Select Complete and click Next.
Figure 2-3
  1. Click Install.
Figure 2-4
  1. When prompted to restart your computer, click Yes.
Figure 2-5
  1. 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 2-6
  1. Click Done.
Figure 2-7