Error 633 Open Port!!!


  1. saeidmscs
    Posts : 32
    Windows 7 ultimate x86
       New #1

    My modem is NOT busy,but windows says it is!!!!!


    hi every one
    When i dial up, i get some Error Message 633 message about COM port being used by other application or modem not configured properly.
    In device manager the modem seems OK, and i dont know of any other device using a COM port. I've tried different drivers, swapping the modem around inside the case but no joy and i'm getting really annoyed now.
    Any help would be much appreciated!
    Last edited by saeidmscs; 20 Nov 2009 at 15:36.
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  3. Qdos
    Posts : 3,960
    W7 x64
       New #2

    Are your com ports enabled in the BIOS, fewer and fewer modern day devices rely on them now, to the degree that a great many boards no longer even feature them - and sometimes even on boards that do have them they're disabled in the BIOS by default.

    I'd also look at Windows Firewall settings to see everything there is hunky-dory.

    Did you have the modem connected before you went to Windows7, when you ran the W7 Upgrade Advisor? Are you sure it's actually a supported device?

    The majority of dial-up modems are either USB nowadays, or rely on occupying one of your systems PCI slots rather than attaching to a com port...
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  4. saeidmscs
    Posts : 32
    Windows 7 ultimate x86
    Thread Starter
       New #3

    Qdos said:
    Are your com ports enabled in the BIOS, fewer and fewer modern day devices rely on them now, to the degree that a great many boards no longer even feature them - and sometimes even on boards that do have them they're disabled in the BIOS by default.

    I'd also look at Windows Firewall settings to see everything there is hunky-dory.

    Did you have the modem connected before you went to Windows7, when you ran the W7 Upgrade Advisor? Are you sure it's actually a supported device?

    The majority of dial-up modems are either USB nowadays, or rely on occupying one of your systems PCI slots rather than attaching to a com port...
    every thing is ok,I was working with that at 2 P.M,and it became disabled at 6 P.M!!!
    anyway,I've heard sth about "upper and lower filters in registry".
    does someone know sth about it?
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