Microsoft is unlocking the "Full Potential" of Private Channels in Microsoft Teams: What You Need to Know

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It has been a while since I posted something just about a Microsoft Teams update, as a lot have been Copilot in Teams to be honest. But here is a real Microsoft Teams update I think is worth knowing about, and it involves Security and Compliance as well. Microsoft is rolling out a "major" update to private channels in Teams, starting in late September 2025 and continuing through mid-December. This biggest change in this update is a shift in how private channel data is stored from individual user mailboxes to a dedicated channel mailbox. Not only will this simplifie compliance management, it will also and align private channels with shared channels, making governance and experience more consistent across Teams. This update promises to increase the support up to 1000 channels per team and 5000 members per channel, removing previous limitations. Teams will also allow meetings to be scheduled directly within private channels, enhancing collaboration.  For organizations using Micr...

Installing Exchange 2007 SP (And the continuing story of my Unified Messaging installation)

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I have now completed the OCS R2 Core installation. Voice, video, chat and document sharing (live meeting) now work like a charm. I had some initial problems with the old offline address book (I am replacing OCS 2007 with OCS R2 by removing the old installation and installing a new server) on the clients. But after 24 hours, all clients were synchronized and running properly.

Now I have moved on to installing a new Exchange 2007 SP1 server with the unified messaging role. This server will be added to an already existing Exchange Organization, and I thought it would be an easy task. Not so.....

The installation is pretty easy, and very few things can go wrong. But one of the things that can go wrong was stopping me from installing Exchange onto the server. The only problem was that the error message said: File not found ??? "An error occurred. The error code was 3221684226. The message was The system cannot find the file specified.".

Once again; The problem was a missing prerequisite on the server, but the prerequisite wizard did not catch the missing object. I believe it is because the Windows 2003 and 2008 servers are very different in what features and roles you deploy in a "basic" setup. And the Exchange 2007 wizard was really created for the 2003 server.

In the case of installing Exchange 2007 onto a Windows 2008 server, you also need to install the Remote Server Administration Tools (RSAT) and Active Directory Domain Services Tools (run ServerManagerCmd -i RSAT-ADDS in command prompt). After adding these tools, I had no more problems during the installation of the UM role.