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MS ActiveSync 3.0 not finding COM port on IBM Thinkpad

Posted on 2000-02-15
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Last Modified: 2013-12-27
I am trying to synchronize (for the first time) an Compaq Aero 1530 (running Windows CE) and an IBM ThinkPad (running NT 4.0) utilizing Microsoft's ActiveSync 3.0 setup.  When it tries to connect, I continue to get an error indicating that Com1 & Com2 are unavailable, and that Com3 is available, but not being recognized.  I have an network/modem card which is utilizing Com3.  I have changed it to use Com2 and even removed the card to see if that would free up the Com port it's looking for...but it still gives the same error message.  Both the palm pilot and laptop are using Outlook 2000.
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Question by:carta
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Expert Comment

by:CharlesDHManning
ID: 2530391
If the COM port is unavailable, then it means that something else is using it.

There are a lot of things that can be using COM ports:
* Programs such as Hyperterminal, barcode scanning, GPS receivers....
* Drivers such as modems, dial up networking, mouse, barcode.

Check also that everything looks fine in Control Panel>Ports.

Solution is to shut down offending apps/drivers and try agian.

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Author Comment

by:carta
ID: 2543291
He gave no further insight to the problem than I already knew.
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Accepted Solution

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snipcock earned 400 total points
ID: 2606112
I concur with CharlesDHManning's answer. NT4 is fussy about usage of com ports (much more so than win9x)! You've obviously got something active on the offending coms ports. This sounds more like a Windows NT question than a WinCE one.

Prove it by trying to open up the offending com ports by some other application. I suggest Hyperterminal. If NT rejects such other application's use of the port then it's pretty much certainly an NT problem. I've experienced this kind of problem frequently with NT!
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Author Comment

by:carta
ID: 2629781
Solution to problem of IBM Thinkpad sync w/Aero 1530

1-delete com ports in NT
2-restart and hold F1 key down (to get into BIOS)
3-click on CONFIG, INITIALIZE, OK
4-go to IBM Thinkpad configuration on PC and disable infared port and enable COM1
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