Sophos Update Manager fails to import updates - air gapped system

Question

I have an air gapped system (SEC 5.2.1R2) that has been running fine, taking updates until I did some updates this week. the SUM errors when importing the updates in the console, giving "Software delivery failed".

Examination of the logs with logviewer.exe gives - Synchronize operation failed when synchronizing product release "Windows Endpoint Security and Control". Details: Cannot create stream 954058bb4a1ab320442a8500e5196ec6x000.xml

I have used KB article 119590 (Sophos Update Manager fails to import updates error 'Cannot create stream' and 'Error during package synchronisation'), I am sure it is not firewall related (nothing has changed and I have reporduced the error on a virtual test setup I had prior to the initial install with no firewalls), and it points to KB111843 to try and download the files mentioned.

I can not find any .xml files to download, and to be frank I am now totally confused, particularly because if I use the warehouse files from the previous week (still had the folder on a usb stick), the error goes and the files are imported correctly, just not the most recent ones!

HELP!!

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QC · Accepted Answer

Hello roberts2, have you subscribed to Recommended ? If you View/Edit the subscription (in the Update managers view, Software Subscriptions on the left) and click Details ... it will show you which version SUM expects to be available for the selected (generic) version according to the metadata. One possible scenario is that your source SUM has subscribed to Previous Recommended (and selected Recommended in none of its other subscriptions) in which case it will not have downloaded the 10.3.7 files. Unless you want to do it by trial and error you have at least to know which versions your source has subscribed to - these are the ones you can select.  Christian :50438