Copilot in Outlook: Meeting Preparation Is About to Get Smarter

Currently, the “Prepare for meetings with Copilot” feature requires at least three participants. Starting mid-October, this is changing. Copilot will soon support all meetings, including 1:1s. The rollout will begin in mid-October and is expected to complete by November 2025 according to the message center. With this update, you’ll also see new real-time insights in the Outlook meeting event form, summarizing relevant context, tasks, documents, and other resources. Plus, you’ll be able to chat with Copilot to confirm action items or better understand meeting goals. The more context Copilot has, the better it works. Meeting series with related emails, shared documents, Teams chats, and previous Copilot transcriptions deliver the richest experience. If your organization limits Copilot to in-meeting use only and deletes content afterward, you’ll miss out on much of this value. Here is a relevant " how to " guide for users.

How to locate users without the EXT in line uri and add it to them

Sometimes added users do not get their EXT set in their LineURI as they should, and it can be a frustrating to locate these users and to edit the lineURI to the proper format.

Fortunately, we have powershell for those kind of jobs. The following example will locate any csuser with a lineURI but without the extension set. Then add the extension to the lineURI and save the configuration.
$extSet = Get-CsUser -filter {lineuri -notlike "*ext*" -and lineuri -ne $null}
foreach ($user in $extSet){
$myURI = $user.lineuri
$myURI = $myURI + ";ext=" + $myURI.substring($myURI.length - "4") 
set-csUser -Identity $user.displayname -LineUri $myURI -verbose}

The example above will add the extension of 4. Edit this as fit for your environment.
I will add this example to the PsCommands sections as well