When updating to Windows 10 October 2018 Update a.k.a. Redstone 5 / version 1809, the system may unexpectedly shut down due to a Local Cache corruption.
This is known to happen when the following conditions are met:
The following sections are covered:
Applies to the following Sophos products and versions SafeGuard Data Exchange 8.1SafeGuard File Encryption 8.1SafeGuard Synchronized Encryption 8.1SafeGuard Cloud Storage 8.1
Windows 10 October 2018 Update (Redstone 5 / version 1809)
During the update, the Local Cache of the SafeGuard Client gets tampered which triggers an immediate shutdown. The Windows update is interrupted which leads to an irrecoverable system state.
Before starting an update to Windows 10 version 1809 the File Encryption Engine Build 22 update needs to be applied.
The interrupted Windows 10 update cannot be repaired. User data needs to be recovered and the OS installed freshly.
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