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Windows 7: Incompatability with Sierra Wireless?

16 Jan 2009   #1

Vista ultimate x64
Incompatability with Sierra Wireless?

I have this rather irritating problem in that whenever I install the drivers/software for my sierra airport 595u card, it kills the usb host controllers. By kill, I mean I get "Windows cannot load the device driver for this hardware. The driver may be corrupted or missing. (code 39) errors. This is on both my laptop and desktop I've tried this on. I don't even have the device plugged in when installing, but when I reboot this happens. Uninstalling the software doesn't work, only system restore before the install or format and re-install. I tried comparability mode for vista, no go.

My System SpecsSystem Spec
21 Jan 2009   #2

Vista ultimate x64

Quick update. Apparently the drivers can be loaded if you do it manually. The device won't actually connect without the sprint pcs connection manager's services running. As near as I can tell, running them causes the computer to be unable to re-start any usb style devices. Any ideas?
My System SpecsSystem Spec
29 Mar 2009   #3


Akaiku -

I'm having the same problem with Build 7057. I installed my AirCard 597E into my laptop running build 7057 (it's a Telus card in Canada) and I noticed now that it's wiped out my entire USB stack.

Where you ever able to recover the USB drivers to operating function without having to reinstall? I shudder at the thought of going through all that again..
My System SpecsSystem Spec

31 Mar 2009   #4

Vista ultimate x64

Rollback seemed to work, but nothing else would. I would suggest giving the sierra connection manager thing from sprint a go instead of the sprint wireless connection. That seemed to work for me. (after a fashion)
My System SpecsSystem Spec
03 Apr 2009   #5


Hey Akaiku -

So I have good news - I solved this problem a few days ago but forgot to update this post.

Its the "USB MUX" drivers that Sierra Wireless installs that cause your Windows 7 USB drivers to freak out. Thankfully, Sierra Wireless is aware of the problem and has released a fix (it was just tough to find!)

What you need to do is download and install the updated USB MUX drivers located at this link:

*BEFORE* you install the AirCard and allow the software to autoinstall.

I'm back up and running on my Aircard and it works great!!!
My System SpecsSystem Spec

 Incompatability with Sierra Wireless?

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