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Remove-O365License

Description​

Removes all Office 365 / Microsoft 365 license activations from the local device using ospp.vbs and SoftwareLicensingProduct WMI. Cleans up cached license files and related registry keys.

Supports scheduling the removal for a future date via the -Days or -Minutes parameter, which creates a Windows Scheduled Task to run the removal automatically.

Requirements​

  • PowerShell 5+
  • Run as Administrator
  • Access to PowerShell Gallery to install or update the Strapper module

Process​

  1. Sets TLS policy for secure module and web requests.
  2. Ensures the Strapper module is installed and up to date, then initializes the Strapper environment.
  3. Locates ospp.vbs from the local Office installation.
  4. Queries SoftwareLicensingProduct for all Office license activations (ApplicationID matching 0ff1ce).
  5. Prompts the user for confirmation unless -Force is specified.
  6. If -Days or -Minutes is specified, creates a Windows Scheduled Task to run the removal after the specified duration and exits.
  7. Removes each product key via ospp.vbs /unpkey (preferred) or falls back to the UninstallProductKey WMI method.
  8. Clears cached KMS host information via ospp.vbs /remhst.
  9. Removes cached license token files from %LOCALAPPDATA% and %ProgramData%.
  10. Removes Office identity and licensing registry keys under HKCU:\Software\Microsoft\Office\16.0.

Usage​

.\Remove-O365License.ps1

Removes all Office 365 licenses without prompting.

.\Remove-O365License.ps1 -Days 30

Schedules the license removal to run automatically in 30 days via a Scheduled Task.

.\Remove-O365License.ps1 -Minutes 5

Schedules the license removal to run automatically in 5 minutes via a Scheduled Task.

Parameters​

| Parameter | Alias | Required | Default | Type | Description | | --------- | ----- | -------- | ------- | ------ | -------------------------------------------------------------------------------- | | | Days | | False | | Int | Number of days to wait before removing the license via a Scheduled Task (1-365). | | Minutes | | False | | Int | Number of minutes to wait before removing the license via a Scheduled Task. |

Output​

.\Remove-O365License-log.txt

Changelog​

2026-06-17​

  • Initial version of the document