With the introduction of the mini file filter driver, which is part of SafeGuard Enterprise as of version 8.10, Sophos provides regular File Encryption Engine updates that just contain improved filter drivers. These updates are provided as Windows Installer Patch files (*.msp) to allow easy installation and deployment. As these updates are cumulative, Sophos recommends using the latest version.
In this KBA you can download build version 31 of the filter driver engine. An overview of all File Encryption Engine Updates is available here.
Applies to the following Sophos products and versionsSafeGuard File Encryption 8.3SafeGuard File Encryption 8.2SafeGuard File Encryption 8.1SafeGuard Synchronized Encryption 8.1SafeGuard Synchronized Encryption 8.2SafeGuard Synchronized Encryption 8.3SafeGuard Data Exchange 8.1SafeGuard Data Exchange 8.2SafeGuard Data Exchange 8.3
This File Encryption Engine update adds File Header Caching, to improve performance (enabled by default).
Bluescreen Bugcheck 0x3b (SYSTEM_SERVICE_EXCEPTION)
The installers for version 8.10.x (separate msp files for 32 and 64bit) can be obtained from this download link.
The installer for version 8.20.x / 8.30.x (one msp file which can be applied to all versions) be obtained from this download link.
msiexec /update "C:\Install\File Encryption Engine for SGN 8.1 Build 31.msp"
msiexec /i C:\Install\SGNClient.msi PATCH="C:\Install\File Encryption Engine for SGN 8.1 Build 31.msp"
msiexec /update "C:\Install\File Encryption Engine for SGN 8.1 Build 31_x64.msp"
msiexec /i C:\Install\SGNClient_x64.msi PATCH="C:\Install\File Encryption Engine for SGN 8.1 Build 31_x64.msp"
After the installation, you can see the new File Encryption Engine in the Installed Updates section of Programs and Features.
As this package just contains new filter drivers and no other products components, this update does not change the version or build number of the installed SafeGuard Client. In the SafeGuard Management Center as of version 8.20, the file filter engine version of this update (188.8.131.52) is also listed in the installed features list of the Client.