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  1. #1
    deanugbu's Avatar
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    Exclamation No or bad challange for adress HELP

    I need help i used to use the detecded public hook in mw2 steam however i stopped but when ever i join a match it loads then says no or bad challange for address whiling kicking me to main menu i have tryied deleting my mp config but no luck could really do with some help thanks!

  2. #2
    deanugbu's Avatar
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    anyone else having this problem

  3. #3
    toxxicomanie's Avatar
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    try to verify integrity of game cache

    steam support:
    https://support.steampowered.com/kb_...3335&l=english

  4. #4
    CrunchLikeTwix's Avatar
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    A challenge is a special packet sent by the server to the client to establish a crypted data channel between clients and server.

    The binaries used for OA085 ( both client and server ) contain a fix for an exploit that allows a valid challenge to be reused. The fix prevents this situation by assuring that every challenge is different for every client that tries to connect to a server and so making it unique for every client.

    The problem that you had could be probably caused when you try to connect to a server using the oa081 binary ( which doesn't have this fix) with the new oa085 client and/or viceversa.

    Another thing that could explain the invalidation of the challenge is that your UDP packets are not routed directly between your client and the server but they pass through a NAT/proxy/net node that operates IP address and or port substitution.

    Something like this :

    - your client sends a request
    - it passes through a NAT/proxy/net node that operates IP address and/or port substitution ( not forwarding packets )
    - the server generates the challenge with the address and the port of the NAT/proxy/net node as above
    - the server sends back the challenge but the response doesn't pass through the same proxy/nat/net node
    - the challenge is invalid for your client.

    Are you running through a certain proxy? It could either be you or the host's.
    Maybe even a proxy?
    Last edited by CrunchLikeTwix; 06-30-2016 at 12:23 PM.

  5. #5
    deanugbu's Avatar
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    i have no proxy or vpn
    if you know fix add my skype deanugbu420

    - - - Updated - - -

    i tried the check steam thing still no luck plz i really want to play mw2

  6. #6
    __Xen0's Avatar
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    Quote Originally Posted by CrunchLikeTwix View Post
    A challenge is a special packet sent by the server to the client to establish a crypted data channel between clients and server.

    The binaries used for OA085 ( both client and server ) contain a fix for an exploit that allows a valid challenge to be reused. The fix prevents this situation by assuring that every challenge is different for every client that tries to connect to a server and so making it unique for every client.

    The problem that you had could be probably caused when you try to connect to a server using the oa081 binary ( which doesn't have this fix) with the new oa085 client and/or viceversa.

    Another thing that could explain the invalidation of the challenge is that your UDP packets are not routed directly between your client and the server but they pass through a NAT/proxy/net node that operates IP address and or port substitution.

    Something like this :

    - your client sends a request
    - it passes through a NAT/proxy/net node that operates IP address and/or port substitution ( not forwarding packets )
    - the server generates the challenge with the address and the port of the NAT/proxy/net node as above
    - the server sends back the challenge but the response doesn't pass through the same proxy/nat/net node
    - the challenge is invalid for your client.
    Nice copy pasta.

    Quote Originally Posted by CrunchLikeTwix View Post
    Are you running through a certain proxy? It could either be you or the host's.
    Maybe even a proxy?
    Good addition lol.

  7. #7
    CrunchLikeTwix's Avatar
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    Quote Originally Posted by __Xen0 View Post
    Nice copy pasta.
    KAPPA you got me <3


    Good addition lol.
    GG i said proxy twice BWASHAHAAHA

  8. #8
    deanugbu's Avatar
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    plz someone halp me

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