--- title: "Before You Enable Copilot: Review Microsoft 365 File Access" description: Review Microsoft 365 file permissions, sharing links, stale accounts and sensitive content before a Copilot rollout. Use an owner-review worksheet. image: https://www.secondstartechnologies.com/hubfs/sst-copilot-file-access-hero-20261027.png --- [![Second Star Technologies IT Support Bakersfield CA Logo](https://www.secondstartechnologies.com/hs-fs/hubfs/Untitled%20Design(13).png?width=121&height=121&name=Untitled%20Design(13).png "Second Star Technologies IT Support Bakersfield CA Logo")](https://www.secondstartechnologies.com) - [Home](https://www.secondstartechnologies.com) - Services - [Managed IT Services](https://www.secondstartechnologies.com/managed-it-services-bakersfield-ca) - [Cybersecurity](https://www.secondstartechnologies.com/cybersecurity-services-bakersfield-ca) - [Data Protection](https://www.secondstartechnologies.com/data-backup-bakersfield-ca) - [HubSpot Services](https://www.secondstartechnologies.com/hubspot-services-bakersfield-ca) - [About Us](https://www.secondstartechnologies.com/resources/about-us) - [Contact Us](https://www.secondstartechnologies.com/contact) - [Blog](https://www.secondstartechnologies.com/blog) - [(661) 769-6145](tel:+16617696145) [\<\< Back to Blog](https://www.secondstartechnologies.com/blog) [Business IT](https://www.secondstartechnologies.com/blog/topic/business-it) # Before You Enable Copilot: Review Microsoft 365 File Access ![Image of Brandon Phipps](https://www.secondstartechnologies.com/hs-fs/hubfs/SH1782.png?height=60&name=SH1782.png) Brandon Phipps Share [mailto:?subject=Check%20out%20https://www.secondstartechnologies.com/blog/before-you-enable-copilot-review-microsoft-365-file-access%20&body=Check%20out%20https://www.secondstartechnologies.com/blog/before-you-enable-copilot-review-microsoft-365-file-access&media=https://1906804.fs1.hubspotusercontent-na2.net/hubfs/1906804/sst-copilot-file-access-hero-20261027.png](mailto:?subject=Check%20out%20https://www.secondstartechnologies.com/blog/before-you-enable-copilot-review-microsoft-365-file-access%20&body=Check%20out%20https://www.secondstartechnologies.com/blog/before-you-enable-copilot-review-microsoft-365-file-access&media=https://1906804.fs1.hubspotusercontent-na2.net/hubfs/1906804/sst-copilot-file-access-hero-20261027.png) ![Business laptop with cloud folders, permission symbols and a file-access review checklist.](https://www.secondstartechnologies.com/hs-fs/hubfs/sst-copilot-file-access-hero-20261027.png?width=1600&height=900&name=sst-copilot-file-access-hero-20261027.png) Before enabling Microsoft 365 Copilot for work, review who can access your SharePoint and OneDrive files, including access through Teams, groups and sharing links. Microsoft says Copilot surfaces work content within the signed-in user's existing permissions. Broad or outdated permissions can therefore make sensitive information easier to discover. Have business owners approve the intended access, ask IT to make the changes, and test the result before expanding a pilot. Before You Enable Copilot: Review Microsoft 365 File Access 4:12 ## Which Copilot experience are you planning to use? Ask your administrator to identify the product, licenses and enabled features in the proposed rollout. Microsoft 365 Copilot, Copilot Chat, agents and connected applications can involve different data sources and controls. This checklist focuses on company-file access in Microsoft 365. Review any added agent or application separately, including its permissions and handling of business information. For a Bakersfield business, a useful first review can start with the file locations employees need for a specific task. Keep that scope in writing. A review of one department's sites provides evidence about that scope, and the rest of the business still needs its own review. ## Does Copilot give employees new file permissions? Microsoft's documented work-data model follows the user's existing access. That access may already be wider than the business owner intends. An employee might belong to an old project group or have access to a folder shared months ago. Check those permissions directly rather than assuming an unfamiliar Copilot result means the assistant created new access. Microsoft also documents separate controls for agents and extensions. If your pilot includes those features, ask IT to review their data access and approved use. Our [guide to AI in business IT support](https://www.secondstartechnologies.com/blog/agentic-ai-for-small-business-it-support-what-it-can-and-cannot-do) explains why someone still needs responsibility for the work and its outcome. ## Where should a file-access review begin? Prioritize locations containing payroll, employee records, contracts, financial forecasts or other information your business restricts. Record the location, its purpose, the people who should use it and a current content owner. Include shared OneDrive folders as well as SharePoint sites and document libraries. - **Content owner:** Who decides which roles need the information? - **Actual access:** Which groups, individuals and links currently grant access? - **External users:** Which guests and vendors still have a business reason to use it? - **Account handoffs:** Does work depend on a former employee's account or personal folder? - **Exceptions:** Which access questions need a decision before the pilot? Use authorized administrative tools and keep the review record in an appropriately restricted location. The worksheet below is an editorial planning aid, with blank fields for your own findings. It does not represent a completed security assessment. ## Check groups, direct access and sharing links SharePoint access can come from group membership and permissions on individual content. Teams-connected sites also depend on Teams and Microsoft 365 group membership. Have IT trace the relevant routes before changing them, especially for private or shared channels whose membership is managed in Teams. Ask whether each person needs read or edit access for their current job. Check broad groups against the content owner's decision. Removing one sharing link may leave access through another group or a direct grant, so test the effective result. ### Review external sharing with the person who owns the work Confirm which outside people still need each shared item. Where allowed, Anyone links can provide access without sign-in; links for specific people restrict use to the named recipients. Review the link type, content scope, recipients and continued purpose. Organization and site settings both affect the sharing options available. Record changes to existing links separately from changes to future defaults. A new default does not prove that old grants have been removed. Coordinate with approved vendors before changing access they need for ongoing work. ### Resolve stale accounts and missing owners Have a manager authorize the timing of access removal and identify who takes over required records. IT should follow the account and data-handoff process, including preservation requirements, before deleting accounts or removing licenses. An inactive account or ownerless site needs a documented decision. ## Use this permission-review worksheet | Field | What to record | | --- | --- | | Location and owner | Site, library or folder; business purpose; named content owner | | Expected access | Approved roles and people; read or edit needs; approved guests | | Observed access | Groups, direct grants and sharing links reviewed; date and reviewer | | Decision | Keep, narrow, remove or investigate; approver and reason | | Change record | Authorized administrator, change date and rollback information | | Verification | Approved user's task succeeds; authorized excluded-user test is denied | | Open issue | Remaining risk, responsible person, due date and pilot decision | ## How do you test the changes before rollout? Begin with a defined pilot group and agreed tasks. Use approved sample information wherever possible, and have the content owner approve the test cases. Record both the access check and the business task that depends on it. 1. **Capture the starting point.** Record the current grants and the approved change so IT can investigate or reverse an unintended result. 2. **Apply the authorized change.** Have the administrator use the appropriate site, group or file controls. 3. **Check required work.** An approved user should still be able to open the right file and complete the agreed task. 4. **Check the restriction.** Use an authorized test identity outside the approved group to verify direct access is denied. Follow the administrator's guidance on when changed access takes effect. 5. **Review the pilot.** Check relevant Copilot behavior and citations, record unexpected results and assign follow-up work. A missing file in one Copilot response is insufficient evidence of a permission boundary. Direct access checks and a review of the grants give the pilot team more useful evidence. Tell participants how to report unexpected information without copying sensitive content into an unrestricted message. ## Which Microsoft tools can help? Microsoft documents SharePoint Advanced Management assessments and access reports for identifying potentially overshared, inactive or ownerless sites. Microsoft Purview provides information-protection capabilities that may also support the review. Have your administrator check feature availability and licensing for your subscription before making those tools part of the plan. Agree on the reviewed scope, unresolved issues and approval criteria before expanding the pilot. Assign a review date and revisit access after role changes, vendor handoffs or major file moves. Broader [cybersecurity responsibilities](https://www.secondstartechnologies.com/cybersecurity-services-bakersfield-ca) and [backup coverage](https://www.secondstartechnologies.com/data-backup-bakersfield-ca) should have their own owners alongside file access. ## Plan your Microsoft 365 access review with SST If your Bakersfield or Kern County business is considering Copilot, bring your proposed users, file locations and business tasks to a [discussion with Second Star Technologies](https://www.secondstartechnologies.com/contact). We can discuss the access review, account handoffs and support work to include in a written scope. Our [managed IT services](https://www.secondstartechnologies.com/managed-it-services-bakersfield-ca) page describes support arrangements to consider. *Technical sources reviewed October 27, 2026. Product features and licensing can change; confirm the planned experience in your own Microsoft 365 environment.* ## Podcast transcript A staff member asks Copilot to find a project document. The response includes a file that the business owner expected only a small team to see. Before rolling out an assistant that can search company information, it makes sense to check who can already open those files. Welcome to The IT Edge: Business Tech Made Simple, from Second Star Technologies. Today we're looking at the file-access review to do before enabling Microsoft 365 Copilot for work. Microsoft says its work-data experience uses the signed-in person's existing permissions. That means the review starts with the access your business has already granted. A forgotten sharing link or an old group membership deserves attention even when nobody has complained about it. Copilot can make information easier to find, so access that once went unnoticed may become more apparent. Start by confirming which product and features you're planning to use. Copilot Chat, Microsoft 365 Copilot, agents and connected applications can have different data paths and requirements. Ask your administrator to identify the licenses, enabled features and company information involved. That gives the review a clear boundary. Then choose the file locations that matter most. Payroll, employee records, customer contracts and financial forecasts are useful starting points. List each SharePoint site or library, the person responsible for its content and the groups that should use it. Check OneDrive folders shared by individuals as well. An active project may still rely on a folder owned by somebody who has left. For each location, ask the business owner a straightforward question: who needs to read this, and who needs to change it? Compare that answer with the access actually in place. Include membership in Teams and Microsoft 365 groups, direct file permissions and sharing links. A person can reach the same file through more than one route, so removing a single link may leave other access intact. Look closely at external sharing. Check whether a vendor still needs access, what was shared and who approved it. Anyone links allow access without signing in when that sharing mode is allowed. A link for specific people is tied to the named recipients. Choose the sharing arrangement that fits the work, then verify the saved result. Changing a default for future links doesn't establish that every existing link has been removed. Handle old accounts with care. The manager should approve the timing of access removal and decide who takes over needed records. IT can then follow the account and data-handoff process, including any preservation requirements. Deleting an account just to tidy up a list can interfere with work that still needs an owner. Make changes in a controlled order. Record the current permission, the business owner's decision and the person authorized to make the change. Test that an approved employee can still complete the task. Use an authorized test account to check that someone outside the approved group is denied access. A missing result in one Copilot answer doesn't prove that a file is protected, so include direct access checks. Your administrator may have reports and controls in SharePoint Advanced Management or Microsoft Purview that help locate broad access and sensitive content. Ask which features are available under your actual subscription. A small business can begin with a documented review of its highest-risk locations while IT confirms those tools. Finish by recording unresolved issues and the person responsible for each one. Give the pilot a defined group of users and a clear way to report unexpected results. Have a business owner decide whether the reviewed scope is ready. Repeat the review when roles, vendors or file locations change. If your Bakersfield or Kern County business is planning Microsoft 365 Copilot, contact Second Star Technologies to discuss a file-access review. Bring the sites, owners and work you want the pilot to support. We can discuss the review and support tasks to include in a written scope. ## References Microsoft. (n.d.). *Data, privacy, and security for Microsoft Copilot.* Microsoft Learn. Retrieved October 27, 2026, from [https://learn.microsoft.com/en-us/microsoft-365/copilot/microsoft-365-copilot-privacy](https://learn.microsoft.com/en-us/microsoft-365/copilot/microsoft-365-copilot-privacy) Microsoft. (n.d.). *Sharing and permissions in the SharePoint modern experience.* Microsoft Learn. Retrieved October 27, 2026, from [https://learn.microsoft.com/en-us/sharepoint/modern-experience-sharing-permissions](https://learn.microsoft.com/en-us/sharepoint/modern-experience-sharing-permissions) Microsoft. (n.d.). *Overview of external sharing in SharePoint and OneDrive in Microsoft 365.* Microsoft Learn. Retrieved October 27, 2026, from [https://learn.microsoft.com/en-us/sharepoint/external-sharing-overview](https://learn.microsoft.com/en-us/sharepoint/external-sharing-overview) Microsoft. (n.d.). *Overview: Remove a former employee and secure data.* Microsoft Learn. Retrieved October 27, 2026, from [https://learn.microsoft.com/en-us/microsoft-365/admin/add-users/remove-former-employee?view=o365-worldwide](https://learn.microsoft.com/en-us/microsoft-365/admin/add-users/remove-former-employee?view=o365-worldwide) Microsoft. (n.d.). *Get ready for Microsoft Copilot and agents with SharePoint Advanced Management.* Microsoft Learn. Retrieved October 27, 2026, from [https://learn.microsoft.com/en-us/microsoft-365/copilot/get-ready-copilot-sharepoint-advanced-management](https://learn.microsoft.com/en-us/microsoft-365/copilot/get-ready-copilot-sharepoint-advanced-management) ## Leave a Comment ![Image of Brandon Phipps](https://www.secondstartechnologies.com/hs-fs/hubfs/SH1782.png?height=150&name=SH1782.png) Brandon Phipps Brandon Phipps is the owner of Second Star Technologies in Bakersfield, California. His work includes business computer and network support, cybersecurity services, and backup and disaster recovery planning. He writes practical business technology resources for the Second Star Technologies website. [Connect with Brandon on LinkedIn.](https://www.linkedin.com/in/sstbrandonphipps) Blog posts ## Related Articles. 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