Proxy requirements for Windows Update
If downloads through a proxy server fail with a 0x80d05001 DO_E_HTTP_BLOCKSIZE_MISMATCH error, or if you notice high CPU usage while updates are downloading, check the proxy configuration to permit HTTP RANGE requests to run.
You may choose to apply a rule to permit HTTP RANGE requests for the following URLs:
*.download.windowsupdate.com *.au.windowsupdate.com*.tlu.dl.delivery.mp.microsoft.comIf you cannot permit RANGE requests, you can configure a Group Policy or MDM Policy setting that will bypass Delivery Optimization and use BITS instead.
For more information about Delivery Optimization, see the Windows Update Delivery Optimization FAQ.
Article ID: 3175743 - Last Review: 07/13/2016 17:49:00 - Revision: 1.0
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