Help Can't sync Exchange Calendar

[acp]

When I first set up my accounts and sync Exchange was working great and contacts and calendar were synced. Now after downloading launchers and 3rd party email apps I'm back to stock everything, but even with calendar and contacts checked to sync I can not get any calendar info for my Exchange account. Has this happened to anyone else?

 

[acp]

Got it. Even though I was receiving email, I had to create a pin lock again to sync calendar and contacts, which is very weird and not consistent.