Friday, March 20, 2015

Speaking at dev.Objective()

I'm very pleased to announce that I've been selected to speak at dev.Objective(), which is coming up in Minneapolis (more specifically Bloomington), MN on May 12-15. (And yes, if the conference name seems vaguely familiar this is the evolution of the former cf.Objective() conference.)

My session is Naked and Afraid: Mobile Offline Access to Emergency Data, in which I'll be discussing how to build cross-platform mobile apps that sync and cache data so you can have access to it even if the Internet and mobile networks are down.

Since I quit doing CFML/ColdFusion several years ago and moved over to Python I stopped speaking at and attending cf.Objective(), but it's a fantastic conference so I'm excited to be making my way back. It's going to be really great to reconnect with a lot of people I haven't seen in quite a while.

If you're a web developer looking for a great conference with a lot of great sessions presented by world-class speakers this is it! Hope to see you there.

Sunday, March 15, 2015

Resolving Mini WAN Miniport Code 31 Errors on Windows 8.1

After a recent Windows update I could no longer connect to one of my VPNs using the native Windows VPN connectivity (i.e. not a client like Cisco AnyConnect). When I tried to connect from the networking charm (I think that's what they call the bar on the right-hand side of the screen) it would hang for a while but never connect, and after that happened when I clicked on the networking icon on the lower right the charm bar wouldn't even come back.

I figured it might be a driver issue so I opened up Device Manager and sure enough, under the network adapters section there were yellow exclamation marks next to every one of the WAN Miniports that show up after you try to connect to a VPN.

I found varying reports of how to fix the problem but here's what worked for me.

  1. Try to connect to a VPN that will cause things to error out (the WAN Miniports didn't even show up in the network adapter list for me until I did this)
  2. Open Device Manager
  3. Expand "Network adapters"
  4. Right-click every one of the WAN Miniport devices (I even did the ones that didn't have a yellow exclamation point next to them) and do the following:
    1. Click "Update Driver Software"
    2. Click "Browse my computer for driver software"
    3. Click "Let me pick from a list of device drivers on my computer"
    4. Uncheck the "Show compatible hardware" box
    5. Under Manufacturer choose Microsoft
    6. Under Network Adapter choose "Microsoft KM-Test Loopback Adapter" (technically from what I understand you can pick anything that you can uninstall, but this one worked consistently for me)
    7. Click "Next"
    8. Ignore the "blah blah might be incompatbile" warning and click OK
    9. After Device Manager refreshes, right click the Microsoft KM-Test Loopback Adapter and click "Uninstall"
  5. After you've done that for every one of the WAN Miniports listed, reboot the machine. If you don't do this things won't be fixed.
That cleaned things up for me. We'll see if it works on subsequent reboots.