I cannot upgrade my SharePoint site collections to 2013 after the Wave15 upgrade

I have received this common question for customer’s Office 365 Education tenants who were upgraded to Wave15.  They receive this error:   Prepare for takeoff! Upgrade is currently disabled for your site collection. Please check back later to see if it has been unlocked for you.     The resolution to this issue is found…

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What do I need to prepare for prior to my Office 365 Service Upgrade for 2013?

I have several customers in education getting upgraded to the Office 365 Service Upgrade for 2013. Most have migrated smoothly but a few customers have seen some issues after upgrade so I decided to post some guidance/FAQ to help make it a better upgrade experience.   What does the Office 365 Service Upgrade for 2013…

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