Category Archives: Exchange

Exchange 2013 CU4 (SP1) and Outlook for Mac 2011 Error 19721

Recently I upgraded our hosted exchange 2013 CU1 servers to CU4 (aka SP1). I didn’t do an in-place upgrade but I chose rather to build an Exchange 2013 CU4 environment and then migrate all mailboxes. The migration process went relative well, except for one peculiar problem: Mac users with Outlook for Mac:2011 couldn’t send e-mails […]

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Bad request (HTTP 400 error) in Exchange 2013 OWA/ECP

Introduction I have managed our Exchange 2013 environment for 6 months in 2013. This Highly Available (HA) Microsoft Exchange 2013 setup was designed and installed by Dave Stork. I have installed various cumulative updates on this setup and almost everything went without a hitch. Since then, I moved on.   The issue Last week our IT […]

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