New Copilot Updates for Outlook Scheduling, Word Agent Mode, and PowerPoint Agent Mode

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Microsoft has announced Copilot enhancements across Outlook, Word, and PowerPoint that improve scheduling, document creation, and presentation building. Here is a summary of some of the features I think can come in handy. Be aware that timelines may change as deployments progress, some of these have already been pushed back a couple of months. All of the following features requires a Microsoft 365 Copilot license, and will be enabled by default for users with such a license. Automatic rescheduling of 1:1 meetings Automatic rescheduling of flexible 1:1 meetings and personal events in Outlook with Copilot, helping users resolve conflicts with minimal manual effort is coming soon. This will be in addition to the already released auto rescheduling of meeting rooms. Originally this feature was planned for mid‑November 2025 to mid‑January 2026, but is now hopefully coming between to mid‑February 2026 and the end of February 2026. A Microsoft Copilot license is required to use the capability....

502_3 bad gateway IIS AAR RP for Lync

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I encountered a "new" error message this week, as I was finalizing a Lync 2013 deployment for a customer. When I say new, it was new to me, as I had not seen this before. Everything was set up for remote access and federations, but certain features, such as mobility did not work right away. I decided to test the URL's from the outside, and was surprised to find the following error message:


This deployment was set up with a IIS ARR for reverse proxy. I searched for the 502 (502.3 to be exact) on forums and internet in general, but could not find any answer to my exact issue.

I verified firewall ports and connectivity was ok. I also checked the web sites on port 4443 and 8080 from a client inside, and saw no apparent errors.

I went through the deployment guide one more time (step by step), and discovered I had forgotten to import the internal CA ROOT to the Reverse Proxy machine. Once this was installed, it all worked just fine.

The reason I decided to write this post, is because the root cause was not very obvious to me (only after reading tracing logs and checking the step by step guide again, was I able to figure out the problem). And I wanted to write a reminder to myself, and maybe help somebody else if they happened to forget to import the ROOT CA.

The 502 "invalid response" can be a lot of things. Certificate error being one of them. Now I know.

For those looking for a guide to set this up, I have two links for you:
This is the one I used: http://uclobby.wordpress.com/2013/08/02/configuring-arr-for-lync-server/

And here is one from nexthop: http://blogs.technet.com/b/nexthop/archive/2013/02/19/using-iis-arr-as-a-reverse-proxy-for-lync-server-2013.aspx

I preferred the first one, as it was a more "general" rule to catch all. But it might not suit all scenarios. The one from nexthop is much more detailed, and will have you set up a rule for each URL.