IPS blade rejects Windows OS updates traffic with the followind log in SmartView Tracker:
Service: http (80)
Attack: Block HTTP Non Compliant
Product: IPS Software Blade
Reason: Failed to handle connection data
Protection Name: Non Compliant HTTP
A new feature for HTTP 206 parsing for Threat Emulation was added in R77.10 that is causing the incorrect validation of the Windows update URL.