A staff member moves to a new team, but retains access to confidential HR files. A contractor finishes an engagement, yet can still open shared project folders. These are common outcomes when permissions grow organically across sites, Teams, Microsoft 365 groups and shared links. A structured SharePoint permission audit checklist helps organisations find that access before it becomes a privacy, compliance or operational issue.

The purpose is not to make SharePoint harder to use. It is to ensure people can reliably find and work with the information they need, while sensitive content is accessible only to the right people. Done well, a permission audit creates a practical foundation for stronger governance, clearer ownership and safer adoption of tools such as Microsoft Copilot.

Why permission audits need more than an access report

A permissions export can show who has access to a site, library or folder. It cannot, by itself, tell you whether that access remains justified. The real audit combines technical evidence with business context: what content is held, who owns it, how it is used and what level of access is appropriate.

This distinction matters in SharePoint Online. Access may be inherited from a parent site, granted through a SharePoint group, provided by a Microsoft 365 group connected to a Team, or created through an individual sharing link. A user can also have multiple paths to the same content. Removing one permission without understanding the wider structure may have no effect, or it may interrupt a legitimate business process.

For larger organisations, the best approach is risk-based. Start with areas holding employee records, client information, financial documents, health data, contracts, executive material or regulated content. Public-facing collaboration sites and low-risk project spaces can follow once the highest-risk locations are understood.

SharePoint permission audit checklist

1. Define the scope and risk priorities

Set clear boundaries before collecting data. Identify the SharePoint sites, Teams-connected sites, libraries and document sets included in the audit. Record why each area is in scope, particularly where it holds sensitive information or supports a critical process.

A whole-of-tenant review may be appropriate after a merger, major restructure or governance reset. In many cases, however, starting with high-risk sites produces faster and more meaningful outcomes. Agree on what success looks like: removal of inactive access, confirmed content owners, reduced unique permissions, or a documented access model for every priority site.

2. Identify the business owner for every site

Every site needs an accountable business owner, not simply an IT administrator with technical control. The owner should understand the site’s purpose, the sensitivity of its information and who should reasonably have access.

Where no owner can be identified, treat that site as a governance risk. Orphaned sites often accumulate outdated files, broad memberships and old sharing links because no one is reviewing them. Assigning an owner may require help from a department head, records team or project sponsor, especially for older collaboration spaces.

3. Map how access is granted

Document the permission model in use for each site. This includes site owners, members and visitors; SharePoint groups; Microsoft 365 group membership; security groups; and individual permissions. Include any Teams private or shared channels, as these can create separate SharePoint locations with different memberships.

This mapping reveals whether access is controlled in a manageable way. Group-based access is generally easier to review and maintain than a large number of individual grants. It also exposes cases where users have been added directly to a library or folder because an existing group model was unclear or unsuitable.

4. Review unique permissions and broken inheritance

Unique permissions are sometimes necessary. A finance folder within a broader operations site may need restricted access, for example. The problem arises when unique permissions are created casually, then forgotten.

Review libraries, folders and files that no longer inherit access from their parent location. Confirm the reason for each exception, its owner and the users or groups involved. Where a unique permission has no clear business purpose, restore inheritance or replace the individual access with a suitable group.

The goal is not zero exceptions. It is a permission structure that can be explained, reviewed and supported without relying on one person’s memory.

5. Check sharing links and external access

Sharing links can be useful for fast collaboration, but they require particular attention. Review links that allow editing, links available to anyone in the organisation and any links shared with external guests. Confirm whether the link is still needed, who created it and whether the access level is appropriate.

External users should be validated against active business relationships. Check that guests are tied to a current project, have an internal sponsor and are not accessing more content than necessary. In sectors with strict privacy or document control obligations, it may be appropriate to limit external sharing to nominated sites or require more formal approval.

6. Validate membership against current roles

Work with business owners to review site and group membership. Look closely at people who have changed departments, completed projects, gone on extended leave or left the organisation. Also identify broad groups that grant access to content unrelated to a person’s role.

This is where HR and identity processes matter. A SharePoint audit can identify the symptom, but reliable access management depends on timely offboarding and role-change processes across Microsoft 365. Where possible, use established Microsoft Entra ID groups that reflect departments or job functions rather than maintaining the same membership manually in multiple sites.

7. Confirm permission levels match the work required

Access is not only about who can enter a site. It is also about what they can do once inside. Review whether owners, members, visitors and custom permission groups have the appropriate level of control.

Users who only need to read a policy library should not have editing rights. Project contributors may need to edit documents but not manage membership or change site settings. Site owner access should be kept deliberately small because owners can alter permissions, delete content and create sharing links. Separate operational convenience from genuine administrative need.

8. Review sensitive content and retention requirements

Permissions should reflect the information held in a location, not just the site name. A general project site can become high risk if someone uploads payroll data, client health records or commercially sensitive documents.

Assess whether sensitive libraries have suitable access restrictions, labels, retention settings and approval processes. If the organisation relies on staff reading critical policies or compliance pages, access alone is not proof that the material was seen or acknowledged. This is where solutions such as Compliance Tracker 365 can provide visibility beyond a simple permission assignment.

9. Record decisions, actions and review dates

An audit only creates value when its findings become accountable actions. For each issue, record the site or content location, risk rating, current access path, required change, responsible owner and due date. Keep a clear record of approved exceptions as well.

Set review cycles based on risk. Highly sensitive sites may need quarterly membership validation, while stable team sites may be reviewed every six or twelve months. Reviews should also be triggered by events such as restructures, project closures, changes in site ownership or incidents involving inappropriate access.

What a useful audit record looks like

Avoid creating a spreadsheet that lists thousands of users without a clear decision path. A useful record focuses on information people can act on: the business purpose of the site, its owner, sensitivity classification, primary access groups, external sharing status, unique permissions, outstanding issues and next review date.

It is also worth recording the intended permission design. For example, a department site may have a small owner group, an editable contributor group and a read-only all-staff audience. This makes future changes easier to assess and gives new site owners a practical standard to follow.

Turn the audit into ongoing governance

Permission audits often reveal broader design issues: too many standalone sites, inconsistent naming, unclear ownership, uncontrolled document sharing or no process for closing project spaces. Treat these as improvement opportunities rather than isolated clean-up tasks.

A sustainable model combines clear site provisioning standards, defined owner responsibilities, group-based access, periodic reviews and an escalation path for sensitive or exceptional access. Automation can support reminders, approvals and review workflows, but it should be built around an agreed governance policy. Automating a confusing process simply makes confusion happen faster.

For organisations with complex Microsoft 365 environments, an independent review can help distinguish harmless variation from genuine exposure. SharePoint Gurus works with business and IT stakeholders to design permission structures that support day-to-day collaboration without losing control of critical information.

The most effective permission audit is one that makes the next access decision easier. When ownership, purpose and access rules are clear, staff can collaborate with confidence and leaders have a defensible view of who can see their organisation’s information.