Automating with PowerShell: Automatically following all Sharepoint Sites or Teams for all users

So a while back we had a client that uses a lot of sharepoint sites. The client only used Sharepoint online, and found it hard to find all the sites in one place. We pointed them to https://YOURDOMAIN.sharepoint.com/_layouts/15/sharepoint.aspx which gives a nice overview of sites and teams.

They came back to us saying it was a little bit of a hassle to use the overview as it only shared recently used sites, or sites that have been followed manually. Of course we wanted to help them get over this hassle so we scripted this; The following script allows you to grab all sites the user is a member of. It then adds the site to the favorites for that user. You can schedule this so each new user automatically gets added.

The Script

The script uses the Secure Application Model or just a generic Azure Application with permissions to read all sites for your tenants, and all your CSP tenants. The script finds each Team the user has joined and adds them to the favorites for that user.

$TenantID = 'CUSTOMERTENANT.ONMICROSOFT.COM'
$ApplicationId = "YOURPPLICTIONID"
$ApplicationSecret = "YOURAPPLICATIONSECRET"

$body = @{
    'resource'      = 'https://graph.microsoft.com'
    'client_id'     = $ApplicationId
    'client_secret' = $ApplicationSecret
    'grant_type'    = "client_credentials"
    'scope'         = "openid"
}

$ClientToken = Invoke-RestMethod -Method post -Uri "https://login.microsoftonline.com/$($tenantid)/oauth2/token" -Body $body -ErrorAction Stop
$headers = @{ "Authorization" = "Bearer $($ClientToken.access_token)" }
$Users = (Invoke-RestMethod -Uri "https://graph.microsoft.com/beta/users" -Headers $Headers -Method Get -ContentType "application/json").value.id

foreach ($userid in $users) {
    $AllTeamsURI = "https://graph.microsoft.com/beta/users/$($UserID)/JoinedTeams"
    $Teams = (Invoke-RestMethod -Uri $AllTeamsURI -Headers $Headers -Method Get -ContentType "application/json").value
    foreach ($Team in $teams) {
        $SiteRootReq = Invoke-RestMethod -Uri "https://graph.microsoft.com/beta/groups/$($Team.id)/sites/root" -Headers $Headers -Method Get -ContentType "application/json"
        $AddSitesbody = [PSCustomObject]@{
            value = [array]@{
                "id" = $SiteRootReq.id
            }
        } | convertto-json
        $FavoritedSites = Invoke-RestMethod -Uri "https://graph.microsoft.com/beta/users/$($userid)/followedSites/add" -Headers $Headers -Method POST -body $AddSitesBody -ContentType "application/json"
        write-host "Added $($SiteRootReq.webURL) to favorites for $userid"
}

}

And that’s it! As always, Happy PowerShelling!

Recent Articles

Automating with PowerShell: making stolen tokens useless with Global Secure Access

Last week I watched Merill Fernando talk to Alex Pavlovsky and Marilee Tuscak from the Entra team about something I’d kinda put under the “needs a GSA licence” branch and i’d check it out later, turns out that like most people, I half-assed the documentation and it turns out it doesn’t. There’s two features that come with any P1 license; Compliant network check and Source IP Restoration. So BP, P1, or even frontline worker licenses already have this.

CIPP ❤️ #IntuneForMSPs

We’re Joining #IntuneForMSPs 🎉

Being invited by Microsoft to join a global initiative is a big moment for us, and we want to be clear about why it matters. #IntuneForMSPs is Microsoft’s program to help MSPs deliver Microsoft 365, Intune, and Copilot services at scale, and CIPP is now part of it, bringing the largest MSP community in the channel directly to Microsoft.

The return of CyberDrain CTF

CyberDrain CTF returns! (and so do I!)

It’s been since september that I actually picked up a digital pen equivalent and wrote anything down. This was due to me being busy with life but also my side projects like CIPP. I’m trying to get back into the game of scripting and blogging about these scripts. There’s still so much to automate and so little time, right? ;)