Here is the log file from my most recent attempt:
Tue 02/07/2017 9:07:35.90 - Info: Starting WSUS Offline Update download (v. 10.0) for w61-x64 glb
Tue 02/07/2017 9:07:35.92 - Info: Option /excludesp detected
Tue 02/07/2017 9:07:35.95 - Info: Option /exitonerror detected
Tue 02/07/2017 9:07:35.98 - Info: Option /proxy detected
Tue 02/07/2017 9:07:36.98 - Info: Set time zone to LOC6:00
Tue 02/07/2017 9:07:38.15 - Info: Updated static download definitions
Tue 02/07/2017 9:07:38.72 - Info: Downloaded/validated mkisofs tool
Tue 02/07/2017 9:07:39.15 - Info: Found sigcheck.exe version 2.54.0.0
Tue 02/07/2017 9:07:39.77 - Info: Downloaded/validated most recent Windows Update Agent installation and catalog files
Tue 02/07/2017 9:07:39.91 - Info: Determined static update urls for win glb
Tue 02/07/2017 9:07:42.87 - Info: Found valid list of superseded updates
Tue 02/07/2017 9:07:45.65 - Info: Downloaded/validated 2 statically defined updates for win glb
Tue 02/07/2017 9:07:46.27 - Info: Cleaned up client directory for win glb
Tue 02/07/2017 9:07:46.27 - Info: Removed NTFS alternate data streams for win glb
Tue 02/07/2017 9:07:46.82 - Info: Determined static update urls for w61-x64 glb
Tue 02/07/2017 9:07:49.35 - Info: Found valid list of superseded updates
Tue 02/07/2017 9:08:02.65 - Info: Determined dynamic update urls for w61-x64 glb
Tue 02/07/2017 9:08:02.94 - Warning: Download of
http://download.microsoft.com/download/ ... 64-deu.exe failed
Tue 02/07/2017 9:08:02.94 - Warning: Download of
http://download.microsoft.com/download/ ... -en-us.exe failed
Tue 02/07/2017 9:08:02.94 - Warning: Download of
http://download.microsoft.com/download/ ... -de-de.exe failed
Tue 02/07/2017 9:08:14.10 - Info: Downloaded/validated 25 statically defined updates for w61-x64 glb
Tue 02/07/2017 9:09:41.68 - Info: Downloaded/validated 202 dynamically determined updates for w61-x64 glb
Tue 02/07/2017 9:09:54.71 - Info: Cleaned up client directory for w61-x64 glb
Tue 02/07/2017 9:09:54.72 - Info: Removed NTFS alternate data streams for w61-x64 glb
Tue 02/07/2017 9:09:55.24 - Info: Ending WSUS Offline Update download for w61-x64 glb
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Tue 02/07/2017 9:09:56.00 - Info: Starting copying for w61-x64 glb "C:\Users\aralph\Desktop\updates temp" /excludesp /exitonerror
Tue 02/07/2017 9:09:56.25 - Info: Copied client tree for w61-x64
Tue 02/07/2017 9:09:56.25 - Info: Ending copying for w61-x64
Win 7 Enterprise
Dell OptiPlex 7010
Intel Core i5 3550 3.3 Ghz; 8GB RAM
VUMT - No
AV - Symantec Endpoint Protection 12.1.6
CPU usage: 25%; Memory usage 33%