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David Greve

Blogs from this Author

Office 365 Exchange Online Implementation & Migration Book

Late last year Packt Publishing asked fellow MVP Loryan Strant and me if we were interested in writing a book on Office 365. I’ve certainly written a few technical blogs, but never a book with this much detail. Since the topic of this book is right in our wheelhouse, we couldn’t pass it up. Integrating […]

Access Denied on the Portal and Mailbox is inaccessible after migration to Office 365

We’ve migrated many users from an external messaging system, like Lotus Notes or GroupWise to Office 365.On one of our migrations, we ran in to an issue with a migrated user.When this user tried to logon with their AD credentials (ADFS deployed), they would constantly be prompted for their logon credentials.When we logged on to […]