Your have created and targeted a client machine with a patch policy. The client machine has received the policy and started to download the patch packages.
The download will break with the errors "Operation 'Get File' failed" / "Download Package failed: Operation aborted" / "refreshPackageStatusVerbose(): Package does not exist for update" if the client machine has it's configuration settings updated during the download process.
The error messages below are from Windows10.0-KB4016637-x64.msu (Package {E94A0D3A-C8FD-2762-A073-F35EDBACDE19}) download.
1.
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refreshPackageStatusVerbose(): Package {E94A0D3A-C8FD-2762-A073-F35EDBACDE19} does not exist for update {9422FA17-DFD9-4EC7-97F2-01E5DF452341} Windows10.0-KB4016637-x64.msu
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2.
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Operation 'Get File' failed.
Protocol: HTTP
Host: SS-T2.Gamegrid.local:80
Path: /Altiris/PS/Share/pkggroup_%7B0e2df3aa-240f-4fdf-993a-4fb61d6cb2de%7D/%7BE94A0D3A-C8FD-2762-A073-F35EDBACDE19%7D/cache/Windows10.0-KB4016637-x64.msu
Http status: 206
Id: {9C7AD2D1-0495-4745-9457-5E02A911865C}
Error type: Local error
Error result: 0x80004004
Error code: 0
Error note: Data receiving aborted
Error message: Operation aborted
======
3.
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Download Package failed: Operation aborted (-2147467260)
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ITMS 8.1
Defect.
Upgrade to ITMS 8.1 RU1 or higher