Update error 0x80072EE2 - which ports to open ?

Discussion in 'Windows Update' started by Tomas Vokoun, Sep 6, 2004.

  1. Tomas Vokoun

    Tomas Vokoun Guest

    I'm having the same problem as most of people here.
    According to http://support.microsoft.com/?kbid=836941 I tried all the steps
    except "Method 6" (Proxy exceptions list).

    In our company must use proxy to gain access to internet, direct connection
    is disabled on firewall (Linux-based IpTables) . Only ports for HTTP and
    HTTPS are allowed via proxy (Squid) and only connections opend from *inside*
    are allowed.

    Also "Method 2" (Reconfigure firewall) - won't help, because there (in KB
    article) is not list of ports which must be opend for WindowsUpdate v5.

    Therefore recommendations to disable personal firewall programs won't work
    here (and our IT security administrator got into a flap when I asked him to
    disable company's firewall just because of WindowsUpdate) .

    So can some MSFT write me which ports, directions (in/out) and protocols
    (TCP/UDP) have to be opend to get WinUpdate v5 functional ?
    Tomas Vokoun, Sep 6, 2004
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  2. Hi

    WU5 uses TCP port 80 and 443 (you might need UDP as well).

    Open TCP/IP port 443 for https://v5.windowsupdate.microsoft.com (to
    allow https traffic from the WU site).

    More detailed instructions here (Norton firewall example):
    Torgeir Bakken \(MVP\), Sep 6, 2004
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  3. Tomas Vokoun

    Tomas Vokoun Guest

    We have ports 80/tcp and 443/tcp (standard HTTP and HTTPs) opend through
    proxy server (as I wrote in my previous post).

    But error 0x80072EE2 is still here.
    Tomas Vokoun, Sep 6, 2004
  4. Tomas Vokoun

    Yato Guest

    Configure WinHTTP proxy using "proxycfg" command on Windows, else WU is
    trying to connect directly which obviously fails behind corporate firewalls.
    For some reason it stops using proxy configured in IE for https connection
    (as observed in my site).
    Use tcpdump, Ethereal or similar to see what's going on nework during update.
    Yato, Sep 16, 2004
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