How to Delete Microsoft Teams Cache for All Users via PowerShell

[eliekarkafy]

The Microsoft Teams cache can be deleted manually by deleting all the files and folders in the %appdata%\Microsoft\Teams directory for each user profile. This however can be tedious and can be automated using PowerShell via one line of script.

Get-ChildItem -Path "$env:USERPROFILE\AppData\Local\Microsoft\Teams" -Recurse | Remove-Item -Force -Recurse

Note: It's important to close the Microsoft Teams app on all devices and clear the cache for all users to ensure that the cache is completely cleared.

[#2]

@eliekarkafy Because more and more users have the "New Teams App" running, I decided to write a little function which will cover Cache deletion for both versions. Teams Client must be in running state before starting the Script.

function clear-TeamsCache {
    # see https://learn.microsoft.com/en-us/microsoftteams/troubleshoot/teams-administration/clear-teams-cache
    $teamsrunning = 0
    $newteams = 0

    if (get-process | Where-Object {$_.ProcessName -ilike "*teams"}) {
        $teamsrunning = 1
        Try {
            get-Process -ProcessName ms-teams -ErrorAction Stop
            $newteams = 1
            $procs = get-process -ProcessName ms-teams
            $executable = $procs.Path
        }
        Catch {
            Write-Host "Modern Teams not running" -ForegroundColor Yellow
            $procs = get-process -ProcessName Teams
            $executable = $procs[0].Path
        }

        Write-Host "Stopping Teams Process(es). Please Wait...." -ForegroundColor Cyan
        $procs | Stop-Process -Force
        Start-Sleep -Seconds 5
        Write-Host "Processes have been stopped...." -ForegroundColor Cyan

        if ($newteams -eq 0) {
            $teamspath = $env:AppData + "\Microsoft\Teams\*"
            Write-Host "Clearing Teams Cache...." -ForegroundColor Green
            Get-ChildItem $teamspath -directory | Where-Object name -in ('application cache','blobstorage','databases','GPUcache','IndexedDB','Local Storage','tmp') | ForEach-Object {Remove-Item $_.FullName -Recurse -Force}
        } else {
            $teamspath = $env:LOCALAPPDATA + "\Packages\MSTeams_8wekyb3d8bbwe\LocalCache\Microsoft\MSTeams"
            Write-Host "Clearing Teams Cache...." -ForegroundColor Green
            Get-ChildItem $teamspath | Foreach-Object {Remove-Item $_.FullName -Recurse -Force}
        }

        Write-Host "Starting Teams again....." -ForegroundColor Green
        Start-Process -FilePath $executable
    } else {
        Write-Host "No Teams Client running. Please start Teams client and then come back and run this Script again" -ForegroundColor Red
    }
}