Q: Error 633: Modem already in use or not configured properly


I am using a Windows7 Home Premium 64 bit PC.
When i am trying to connect to internet using 3g USB modem, i am getting Error 633: Modem is in use or not configured properly.
The software and drivers were installed properly.  I uninstalled and re installed several times with no success. I tried the same in Safe mode without success.

Any help is appreciated.





I would suggest you to check if the modem is compatible with Windows 7.


Refer to the link:

Windows 7 Compatibility Center:


I would also recommend you to connect the modem to a different computer and check if it detects over there. If it is not working on a different computer also, then the problem will be with the modem and I would suggest you to contact the modem manufacturer for getting any further assistance.


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Views: 108,836 Last updated: July 13, 2018 Applies to: