Fix (Error 633) The Modem (or other Connecting Device) Is Already In Use or is not configured
5Fix (Error 633) The Modem (or other Connecting Device) Is Already In Use or is not configured
There is a pretty well-documented network problem with Windows computers which causes users to see an error message containing error code 633 whenever they try to connect to the internet using a modem, Wi-Fi or even a hard-wired Ethernet connection. Reports of this issue go way back to the days of Windows Vista, and the issue has lived through the numerous versions of the Windows Operating System that have been released since, now even affecting Windows 10 users.
This error may occur if the communication port used by your modem has been reserved by another software program. Error 633 also occurs when users set up multiple internet connections.
Issues addressed in this tutorial:
the modem or other connecting device is already in use VPN
the modem (or other connecting device) is already in use or is not configured properly
When a user tries to connect to the internet using a modem, Wi-Fi, or an Ethernet connection and comes across Error 633, there are a few things which could possibly be going wrong. Reports of this issue can be allied way back to the days of Windows Vista and have managed to live even today affecting hundreds of Windows 10 users. This tutorial is a walk-through of this well-documented VPN Error. Read on to understand Error 633 is, its symptoms, causes, and fixes.
This tutorial will apply for computers, laptops, desktops, and tablets running the Windows 7, Windows 8/8.1, Windows 10 and Windows 11 operating systems (Home, Professional, Enterprise, Education) from all supported hardware manufactures, like Dell, HP, Acer, Asus, Toshiba, Lenovo, Huawei and Samsung.