How to Request a Microsoft W-9 or Proof of Insurance for Vendor Due Diligence
Question details
The user needs to obtain Microsoft's W-9 form, certificate of insurance, or other official documentation for vendor onboarding and due diligence.

- Product
- Microsoft 365
- Device & OS
- not provided
- Scenario
- Completing vendor onboarding or due diligence requiring official tax or insurance documents from Microsoft.
- Observed behavior
- The user needs a standardized way to request and securely receive Microsoft's W-9 or insurance certificates through the official support channels.
Ensure you have Microsoft 365 administrator privileges, as access to the admin center's billing and support requests is restricted to admins.
Request Vendor Documents via the Microsoft 365 Admin Center
The most reliable way to get the correct W-9 or specific proof of insurance is by submitting a service request to the Microsoft 365 billing team.
Because there are different types of certificates of insurance, Microsoft requires these requests to go through their billing engineers to ensure you receive the appropriate documentation for your vendor due diligence.
Navigate to the Microsoft 365 admin center and sign in with your administrator credentials.
Go to the 'Support' section in the left-hand navigation menu.
Select 'Service requests' to create a new support ticket.
Describe your request, specifying whether you need a W-9 form, a certificate of insurance, or another vendor due diligence document, and submit the ticket to the billing team.

Access Documents Provided in Microsoft Community Private Messages
If a Microsoft Community Moderator has already provided your W-9 via a forum private message, you can retrieve it directly from your community profile.
Manage Your Vendor Documentation with WPS Office
While Microsoft 365 handles your vendor document requests, WPS Office provides a free, lightweight, and highly compatible alternative to Microsoft Office for opening, editing, and managing all your downloaded PDFs and business documents.
- 1. Download the Software: Visit the official WPS website and click 'Free Download' to get the installer package.
- 2. Install WPS Office: Run the downloaded file and follow the straightforward on-screen instructions to install the suite on your device.
- 3. View and Edit Documents: Open WPS Office to effortlessly view, organize, or print your vendor due diligence files like PDFs and Word documents.

Frequently Asked Questions
Why do I need to contact the billing team for proof of insurance?
Because there are different types of insurance certificates, the Microsoft 365 billing team needs to evaluate your specific vendor due diligence requirements to ensure they provide the correct documentation.
Can I request a Microsoft W-9 without admin access?
No, submitting a service request through the Microsoft 365 admin center requires administrator privileges. You must ask your organization's IT administrator to submit the request for you.
How do I check private messages on the Microsoft Community forum?
Sign in to the forum, click your Profile Picture at the top right, select 'My Profile', and then choose the 'Private messages' tab to view any documents sent by moderators.




