Environment
- App Control Server: All Supported Versions
- App Control Agent: All Supported Versions
- Microsoft Windows: All Supported Versions
Symptoms
- Errors when attempting to download the Agent upgrade package, similar to:
Failed to download upgrade package: https://ServerAddress/hostpkg/pkg.php?pkg=/ParityHostAgent.msi. WinHttpReadData Error[12002]
- Errors when attempting to download some other file from the Resource Download Location (RDL), similar to:
Failed to download Server Cert List file from URL [https://ServerAddress/hostpkg/pkg.php?pkg=TrustedCertList.pem]: Error[WinHttpSendRequest Error[12002:]]. Options[00000003] TotalFailures[1] FailureId[961]
Cause
The endpoint encountered some network timeout when attempting to access the files on the Resource Download Location.
Microsoft defines this WinHttp Error[12002] as:
ERROR_WINHTTP_TIMEOUT: 12002
The request has timed out.
This error can be returned as a result of TCP/IP time-out behavior, regardless of time-out values set in Windows HTTP Services.
Resolution
- Verify the Resource Download Location (RDL) specified is correct.
- Verify Port 443 to the RDL is open.
- Log in to the endpoint encountering the error and use a browser to validate the file exists and can be downloaded (without error), example:
https://ServerAddress/hostpkg/pkg.php?pkg=ParityHostAgent.msi
- If a Proxy is in use, add an exception for the Server Address and/or the RDL.
- Perform the relevant task manually on the endpoint:
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