During the migration from SafeGuard Easy / SafeGuard Disk Encryption 5.x to Sophos Disk Encryption 5.61, the installation fails with error message 1603, refering to a pre-installation package in the Sophos staging folder that cannot be found.
An additional error message with "Pre-req MSI failed! Error code: 1603" will be displayed at the end of the installation.
First seen in
Sophos Disk Encryption 5.61.0
In case an original SafeGuard Easy / Disk Encryption 5.50.8 Client has been installed with MSI packages from a network location, which have been renamed prior to installation (i.e. from SGxClientPreinstall.msi to 01_all-SGxClientPreinstall.msi), a migration to Sophos Disk Encryption 5.61 cannot be accomplished.
What To Do
On an affected client machine, open up the registry and navigate to the following hive:
Make sure that the above mentioned REG_SZ Key "PackageName" is filled with the value "SGxClientPreinstall.msi". If the value differs, replace it with "SGxClientPreinstall.msi".
After the changes have been made, restart the Sophos Disk Encryption 5.61 client setup. The setup should now proceed.