PureMessage for Microsoft Exchange fails to install on Exchange 2013 servers which have been updated to Exchange 2013 Service Pack 1. A 1603 error code is reported indicating that the installation has failed.
Important: Microsoft Exchange 2013 SP1 requires the application of a Microsoft patch before PureMessage for Exchange is installed. See step 1 below.
An issue was introduced by Exchange 2013 Service Pack 1 which causes the installation to fail.
Applies to the following Sophos products and versions PureMessage for Microsoft Exchange 4.0
Microsoft have released a PowerShell script to resolve this issue.
Related Information Microsoft Exchange Frontend Transport service fails to start after applying Exchange 2013 SP1
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