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In the update manager details you see the following error:
80040406 Delivery failed for software subscription [subscription-name]. Access to the source update location is denied or the location is otherwise unavailable.
First seen in Enterprise Console 4.0.0
This error could occur for a number of reasons.
C:\Documents and Settings\All Users\Application Data\Sophos\Update Manager\
If you have tried all the steps above but updates are still failing check the Sophos Update Manager Logviewer.exe tool for a more detailed error. Search the knowledge base for errors you see in the Logviewer.
If you are unable to find information in the knowledgebase regarding the errors shown:
Every comment submitted here is read (by a human) but we do not reply to specific technical questions. If you need technical support please post a question to our community. Alternatively for licensed products open a support ticket.