Changing a User’s Username in Office 365 with On-Prem AD

Many people are running Exchange Online and Office 365 running with Synced usernames and password from the On-Premise Active Directory, it works well most of the time but we discovered a problem when we had to rename a user, although they were renamed in our AD and the 0365 Portal details reflected the updated name,…

Outlook 2010 prompting for credentials after moving to hosted exchange/office 365

We’ve been migrating to hosted exchange on Office 365 for some weeks now. Some of our Outlook 2010 clients have a problem once they’d been moved. After many hours of trying different things and searching I found a Microsoft Patch that resolved the problem. The KB Number is – KB2791026 downloads can be found here KB2791026 Also…

Windows Update – Error 800B0001

I had a problem this morning after deploying a WSUS server. When running Windows Updates on the client workstation I get the Error 800B0001.  I found this was due to the missing update To resolve this error you need to install this update – KB2720211 Download and install the patch then restart the server.    …

Hosted Exchange – Part 1

We’re getting fed up of this huge virtual machine. It’s just sitting there chewing through RAM and Disk We’ve got 268 mailboxes. Plus the usual shared resources, calendars etc. Even this “small” machine takes 22GB RAM and 500GB storage, then you need to add 350GB+ being backed up each night, the fact its chomping IOPs…