Palm Treo 700w Using Manual page 237

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Synchronization (ActiveSync software) CHAPTER 10
An alert tells me that my account information
could not be detected.
When you set up the Exchange Server sync options, the credentials
page was left blank. Correct the credentials (see "Synchronizing with
Exchange Server" on page 161), or set up your smartphone to sync only
with a computer, and try to sync again.
An alert tells me the device timed out
while waiting for credentials.
The Exchange Server credentials screen was left open too long.
Re-enter the Exchange Server credentials, and try to sync again.
My Today screen settings are not restored
after a hard reset
Settings such as the background image and plug-in choices are not
backed up during synchronization, so they can't be restored after a hard
reset. If you use a backup utility, you may be able to restore a backup to
recover your Today screen setting and other additional info.
Using Your Treo 700w Smartphone 229