Microsoft Audit Defense

The three types of Microsoft reviews

Microsoft uses three mechanisms to test licensing compliance: (1) Software Asset Management (SAM) engagement — nominally advisory, typically delivered by a Microsoft partner; (2) Microsoft Licensing Review — more formal, conducted directly by Microsoft or a designated firm; (3) Formal contractual audit — invoked under EA audit rights, rare but enforceable. Each has different scope, different evidence expectations, and different leverage. Buyers who treat them all the same tend to lose.

Why SAMs are not 'friendly'

Microsoft positions the SAM as an advisory service. In practice, its output is a licensing position statement that Microsoft uses to drive commercial outcomes at renewal. A SAM finding of 4,000 unlicensed SQL cores, even if disputed, becomes the anchor for the renewal negotiation. Treat the SAM like an audit from day one, because commercially it functions as one.

The first 72 hours

When the engagement letter arrives: (1) acknowledge receipt; (2) designate a single point of contact (typically procurement or SAM lead, never IT); (3) request the full scope, methodology, and evidence requirements in writing; (4) do not provide any data yet; (5) convene an internal steering committee with procurement, IT, legal, and — for larger exposures — external advisors. Every interaction from here runs through the single point of contact.

Scope control: what you disclose and what you don't

A SAM or audit scope is negotiable. Microsoft's opening scope is always broader than contractually required. Narrow it in writing to: products in scope, entities in scope, time period covered, and evidence formats acceptable. Anything outside that narrowed scope is not disclosed. Volunteering extra context to 'help' is a common and expensive mistake — Microsoft's auditors are not consultants.

Evidence management

Every artifact you provide becomes evidence. Number and log every file sent, every screen shown, every answer given. Require that Microsoft's findings cite the evidence supporting them. When a finding is unsupported by cited evidence, it is not a finding — it is an assumption, and you can dispute it on that basis alone.

Common overcounts (and how to rebut them)

Recurring overcount patterns: (1) counting virtual machines as licensed CPUs when Software Assurance mobility applies; (2) counting passive/failover instances; (3) counting test and dev where dev/test licensing applies; (4) counting non-production environments where production-use rights were not exercised; (5) counting terminated users in Entra who never consumed Microsoft services. Each is a defensible reduction if documented.

The commercial settlement frame

Microsoft audits almost never end in pure true-up at list. They end in a commercial settlement tied to the next renewal. That is leverage for the buyer. A $4M exposure often settles at $1.2M rolled into a multi-year commitment — because Microsoft prefers future bookings to a one-time back-bill. Know this before you respond to the first finding.

When to engage external counsel

Engage external licensing counsel and an independent licensing advisor at any of these triggers: the claimed exposure exceeds $500K; the engagement letter cites audit rights rather than SAM advisory; Microsoft involves its legal team; the scope includes entities across multiple jurisdictions; or you suspect the SAM partner is incentivized by the finding. Do not wait until the draft report.