The agent is reporting these errors.
The windows agent communicates with the server, but is not downloading the packages.
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Starting OCS Inventory NG Agent on Thursday, December 22, 2016 11:23:28.
AGENT => Running OCS Inventory NG Agent Version 2.1.0.3
AGENT => Using OCS Inventory NG FrameWork Version 2.1.0.3
AGENT => Loading plug-in(s)
DLL PLUGIN => Searching for Plug-in DLL(s) in folder <C:\Program Files (x86)\OCS Inventory Agent\plugins>
DLL PLUGIN => 0 DLL Plug-in(s) succesfully loaded on 0 DLL(s) found
AGENT => Using network connection with Communication Server
COM PROVIDER => Loading Communication Provider <C:\Program Files (x86)\OCS Inventory Agent\ComHTTP.dll>
AGENT => Using Communication Provider <OCS Inventory NG cURL Communication Provider> Version <2.1.0.3>
AGENT => Sending getLabel request
COM SERVER => Initializing cURL library for getFile
COM SERVER => Using cURL without server authentication
COM SERVER => Disabling cURL proxy support
COM SERVER => Disabling cURL SSL server validation support
COM SERVER => Sending fileGet request to URL <http://xxx.xx.x.xx/ocsinventory/deploy/label>
COM SERVER => fileGet response received <HTTP Status Code #400>
COM SERVER => Cleaning cURL library
AGENT => Failed to retrieve Label <HTTP Status Code #400>
AGENT => Sending Prolog
DID_CHECK => Read DeviceID <SZ-S3279CC-2016-12-22-11-12-45> and MACs <70:5A:0F:69:85:E00A:00:27:00:00:0E> in file <ocsinventory.dat>
COM SERVER => Initializing cURL library for sendRequest
COM SERVER => Using cURL without server authentication
COM SERVER => Disabling cURL proxy support
COM SERVER => Disabling cURL SSL server validation support
COM SERVER => Sending HTTP Post request to URL <http://xxx.xx.x.xx/ocsinventory>
COM SERVER => HTTP Post response received <HTTP Status Code #200>
COM SERVER => Cleaning cURL library
AGENT => Prolog successfully sent
SUPPORT => No support detected, Registration key : N/A
ERROR *** AGENT => Failed to write Prolog Frequency <Error code 5 = Access denied. >
AGENT => Communication Server ask for Package Download
DOWNLOAD => Package history file successfully cleaned for duplicate IDs
DOWNLOAD => Metadata file <info> for package <1482331703> is located at <https://xxx.xx.x.xx/download/1482331703/info>
COM SERVER => Initializing cURL library for getFile
COM SERVER => Using cURL without server authentication
COM SERVER => Disabling cURL proxy support
COM SERVER => Disabling cURL SSL server validation support
COM SERVER => Sending fileGet request to URL <https://xxx.xx.x.xx/download/1482331703/info>
COM SERVER => fileGet response received <HTTP Status Code #200>
COM SERVER => Cleaning cURL library
DOWNLOAD => Unloading communication provider
ERROR *** DOWNLOAD => Can't register package <1482331703> into Registry
DOWNLOAD => Download and setup tool successfully started
AGENT => Unloading communication provider
AGENT => Unloading plug-in(s)
AGENT => Execution duration: 00:00:02.