I tried the "clear cache" thingy & it didn't work for me either. I don't want to turn off my sync on my tablet because it won't alert me when I get email from my other account. After all, that's the whole purpose of having the sync...to be alerted that I have email from my other account. I went into my settings, accounts, clicked on my other email account...unchecked "sync contacts" & unchecked "sync calender". I left the check on "sync email", I did not uncheck it. This seemed to work for me, the "Unfortunately Exchange Services has stopped" quit popping up. Grant you, my calendar & contacts are not syncing but my email still is. I'm happy with this result, my email is more important to me than my calendar & contacts. At least this stopped the irritating pop up & my email is working fine. Hope this helps...at least until someone stumbles upon how to actually fix this problem.