Safeguarding Sensitive Data in Microsoft 365 Copilot with Purview DLP (GA Release)

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The challenge with sensitive data and access to Copilot Microsoft 365 Copilot empowers users with AI-driven assistance across Microsoft 365 apps, but it also raises concerns about accidental oversharing of sensitive information. In response, Microsoft has extended its Purview Data Loss Prevention (DLP) capabilities to Microsoft 365 Copilot, allowing organizations to enforce information protection policies within AI workflows. The DLP for Microsoft 365 Copilot has been in preview for some time, but Microsoft has now announced it is released for GA (General Availability). Among some of the interesting features are new features like alerting and policy simulation. Key details:  Rollout Timeline: As of June 2025, the rollout has begun. It should be completed worldwide by late July 2025. Scope: Initially, DLP for Copilot was available for Copilot Chat scenarios. By the time of GA this is expanding to Copilot in core Office apps (Word, Excel, PowerPoint) as well. Ensuring that DLP prote...

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.