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If your Windows operating system may not be updating properly via a proxy server, this instruction may help.
netsh winhttp show proxy
netsh set proxy facultyproxy.upd.edu.ph:8080
netsh winhttp show proxy
net stop wuauserv cd %systemroot%\SoftwareDistribution ren Download Download.old regsvr32 %windir%\system32\wups2.dll net start wuauserv NET START BITS NET START WUAUSERV SC QUERYEX BITS SC QUERYEX WUAUSERV