My core server is 2017.3 SU4 with about 160 clients. My clients are mixed win7 & win10 Enterprise. I am experiencing an issue where about half of my clients are completing patching without issue.
The rest are reporting this error for every patch:
"Downloading file from source http://CoreServer/LDLogon/patch/csi2016-kb4011634-fullfile-x86-glb_tw1220050.exe.
http://CoreServer/LDLogon/patch/csi2016-kb4011634-fullfile-x86-glb_tw1220050.exe
Failed
Failed: Could not download http://CoreServer/LDLogon/patch/csi2016-kb4011634-fullfile-x86-glb_tw1220050.exe"
I can log into the client and open a browser and copy/paste the url and the patch will download manually. However the task fails with the Result of "All patches Failed" and Return Code of "412".
Has anyone seen this behavior? How do I start to troubleshoot this?