Vulnerability Scans are not updating on the Core. - Client Logs show HTTP Error 406. Giving up.

Environment

LANDesk Management Suite 9.5

LANDesk Management Suite 9.6

Error Message in Vulscan.log

Last status: Done
ProcessRules: detected compliance=0
Sending scan results to core LDMSCORE
PutResultsAsFile uncompressed length: 2014088
compressed length: 55626
HTTP POST: http://LDMSCORE/incomingdata/postcgi.exe?prefix=vulscanresults\&name=ScanResults_{FC50D599-697B-5143-A3AA-7D4E3F74134A}_03456.vrz
Setting a proxy...
Setting socket timeout to 1000 * 60 * 4
Failed http://LDMSCORE/incomingdata/postcgi.exe?prefix=vulscanresults\&name=ScanResults_{FC50D599-697B-5143-A3AA-7D4E3F74134A}_03456.vrz on server (0), server status: 406.
HTTP Error 406.  Giving up.
Last status: Failed: No response from core
Failed to put vulnerability results to core as file: 8DB301B1
Skipping repair step because scan errors occurred.
Exiting with return code 0x8db301b1 (433).

Solution / Workaround

1. Give the IUSR account Full Control permissions to the Managementsuite\Vulscanresults folder on the Core Server.
2. Run IISRESET on the Core Server.