Running XP Sp3 in Parallels 11 on Mac OS X 10.11.6. Browsers (IE, Firefox, Chrome) won't load HTTP pages. Can do Pings, FTP and other functions from command line or programs like WS-FTP and access external sites for these protocols. All IP addresses and gateways correct. Have tried both shared and bridged modes. Mac side works fine. Turning off all known firewalls does not help. Fireofx appears to access FTP via FTP://sitename so does not seem to be a DNS issue. Have another Mac set up the same way with the same programs and it works fine. Cannot find any differences in configuration.
try changing your configuration setting to use generated mac address. Configuration < Hardware < Network < Advanced < DHCP: Use Generated MAC See if this causes a change or resolves the issue