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Before installing IM Security, complete the following tasks:
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Pre-installation Tasks
If a firewall exists between the Lync/Skype for Business Server and its clients, open the necessary ports to ensure IM Security connectivity.
For details, see Ports Checklist.
Log on to the target server using an account with Domain User and Local Administrator privileges.
Disable or uninstall other IM environment antivirus applications.
Check the target server’s compliancy to the system requirements.
Obtain the proxy server and SMTP server settings and authentication information (if necessary).
Close opened Microsoft Management Console (MMC) screens.
Prepare the IM Security Activation Code.