Retire the tenant without erasing the operating record.
A business that has stopped operating may still keep Microsoft 365 alive because years of mail, files, and meetings remain useful. Preserve the authorized historical record before the tenant is dismantled.
Archive supported Outlook/Microsoft 365 email, selected authorized OneDrive files, and Microsoft calendar history where appropriate while tenant access still exists; then verify before provider cancellation.
What the tenant may still be holding
Microsoft 365 can contain several layers of the company's history.
Mailbox correspondence
Clients, vendors, approvals, and attachments can outlive the reason the mailbox stayed active.
OneDrive files
Selected company artifacts can retain source path and context after the tenant is gone.
Calendar history
Meetings can preserve chronology, recurring relationships, and operating rhythms without proving attendance or discussion content.
Preserve before tenant retirement
Do the historical work while Microsoft still authorizes it.
Set the authorized scope
Separate company records to retain from material that must be deleted, transferred, or handled differently.
Archive supported sources
Preserve the selected mail, OneDrive, and calendar history.
Verify, then retire the tenant
Check representative records before using Microsoft's administrative controls to close the service.
The archive does not replace formal business retention policy
Company closure can create legal, tax, employment, privacy, and contractual obligations.
- AtArchive does not set those retention periods.
- AtArchive is not a legal-certification or regulatory-compliance service by default.
- Tenant cancellation remains a Microsoft-side action.