How to remove corporate settings? My DroidX just got upgraded to 2.3.15 (android version shows 2.2) over the air.  After the upgrade the phone forced me to set a pin number.  The phone is not currently connected to an Exchange server, but it used to be.  A couple of weeks ago I removed then Exchange settings for contact list sync and I uninstalled TouchDown.

The strange thing is that the Exchange server that I was connected to didn't have a requirement for a password, so I'm not sure where this setting is coming from.  When I look in Location &amp; Security > Select Device Administrators I see "Corporate Sync" listed in there, but there doesn't appear to be any way to remove the settings.

I no longer work for the company with the exchange server, so I can't connect back to it.  I'd rather not wipe the phone and reset it if I don't have to.  I would also prefer not to root the phone as well.
FOR ROOTED PHONES ONLY

Well I've had the same problem as the original poster ever since I updated it to Froyo. My exchange account I previously had on the phone was using a remote administrator certificate that I could not remove. Yesterday I worked out a simple solution using R/W access to the /system/app folder.

Using a free root file explorer named Super Manager. I navigated to /system/app and renamed the file PolicyMgrProvider.apk to PolicyMgrPrivider.bak. This removed the remote administrator policy and allowed me full control over the lock screen. After I switched it to No Lock I went back and renamed the file to PolicyMgrProvider.apk.

No problems what so ever.

I did rename the file BlurEmailEngine.apk to a .bak at the same time, so if its not working disable that app as well long enough to change your lock screen settings.

I know you don't want to root your phone, but unfortunately its probably the only way you'll get that stupid PIN lock gone.