Microsoft FastTrack
Scripts · PowerShell

Export-EngageFiles

Export files uploaded to a Viva Engage network during a date range by using the Yammer Files Export API.

View on GitHub
viva-engageadministrationexportdata-export

What it is

A PowerShell sample that signs in interactively with MSAL.PS, submits a request to the Yammer Files Export API for a start and end date, waits for the export to be packaged, and downloads the resulting zip file or files into a dated folder together with a script log. In native-mode networks no files are downloaded; you get a CSV of file information that includes each file's URL.

Why use it

  • Archive files stored in Viva Engage (Yammer) storage for a date range.
  • The API packages files into zip files on the back end, which the README recommends over downloading files with the Network Data Export script for large volumes.
  • Writes a detailed log next to each export for troubleshooting.

How to use it

  1. Create a Microsoft Entra app registration with the delegated Yammer access_as_user permission and install the module with Install-Module MSAL.PS.
  2. Set $ClientId, $TenantId, $RedirectUri, and $rootPath near the top of the script.
  3. Run with a start and end date in YYYY-MM-DD format. Use shorter date windows if packaging fails:
.\Export-EngageFiles.ps1 -startdate 2023-01-14 -enddate 2023-01-31

Prerequisites

  • Microsoft Entra app registration with the delegated Yammer access_as_user permission
  • MSAL.PS PowerShell module
  • Viva Engage verified administrator account

Related resources