Windows Phone Thoughts: Does ActiveSync recognize your Pocket PC as a guest?

Occasionally, ActiveSync 3.5 will recognize my Pocket PC as a guest. 99% of the time I simply undock and redock and all is well. Sunspots I guess. But I know that some of you get the Guest mode more often if not every time. The first thing you should do is make sure you have ActiveSync 3.5 build 12007 installed. This is what is at Pocket PC.com in the download section. To see which build you have, launch ActiveSync and select Help|About.

If that doesn't work, undock your Pocket PC, launch a command prompt in Windows and type regsvr32 msxml3.dll at the command line. You should get a quick message that the DLL was registered. Now, reboot your PC and soft-reset your Pocket PC. Hopefully, your problem will be solved!