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An AI agent connected to SharePoint can make a document easier to find. When that document is already shared too broadly, the agent can also make the problem easier to notice. Validation starts with actual source permissions and continues with answers obtained by different users. A demonstration under an administrator account gives little evidence about what a guest can read.
Distinguish the controls that apply
Microsoft describes agent access and access to source content separately. In the experience based on .agent files, the file determines who can access or edit the agent; answers depend on the user’s permissions to content. Licensing or pay-as-you-go billing adds a separate condition.
Include these layers in your inventory. For each agent, record its owner, who can use it, who can edit it and which libraries provide its answers. Add the groups granting access to documents and the person responsible for each group. Sharing inherited from an old project may remain technically valid after its business purpose has expired.
A knowledge base with controlled access needs this review before work on answer quality. An accurate response drawn from a restricted budget is a problem when its recipient should not know that budget. Check both the content delivered and its provenance using the same kinds of accounts planned for operation.
Ask the same questions with three profiles
Create representative test accounts: a business user, a manager and a guest. Their group memberships should reproduce the intended rules, without extra administrator access to simplify testing. Prepare fictional documents with known access levels. The data owner approves what each profile should be able to read before conversations begin.
Choose questions whose answers depend on specific documents: a restricted budget amount, a general procedure and contact details from a record limited to one group. The matrix connects each question with a profile and an expected outcome. Returning no answer may be the correct outcome. A plausible answer needs comparison with its source before it can pass.
For each observation, keep the account, groups, agent configuration, question and displayed citations. Check the excerpts too. A title or summary can disclose information even when the final link cannot be opened. These proposed cases describe an acceptance method; they do not report results obtained in a Microsoft tenant or a customer environment.
TableProposed matrix using fictional documents · shareable block
| Question and profile | Expected outcome for approval | |
|---|---|---|
| General policy | Employee, manager and guest ask the same question. | Each receives only content authorized for that profile; the guest may receive no answer. |
| Restricted budget | The employee and manager request the amount. | The authorized manager can obtain the source; the employee receives no restricted amount or excerpt. |
| Revoked access | The same user repeats the question after revocation. | Dated observations cover a new conversation, the previous conversation and direct access, with no invented delay. |
Fictional example: a project budget shared too broadly
Imagine a fictional small business whose project folder contains a schedule available to the team and a budget reserved for management. An old group still gives all collaborators access to the budget. The agent correctly answers an employee’s question about its amount. The source’s sharing configuration is the issue, even though the answer follows configured permissions.
The proposed correction is to review the group and source structure with their owner, then repeat the matrix. Check direct file access too. Merely instructing the agent to keep budgets confidential would leave the document available through other routes. This example is illustrative and does not describe a Daillac customer, an audit finding or a measured result.
Before connecting search to internal process automation, verify action permissions separately. Reading a procedure does not automatically authorize someone to approve a budget or change a record. The integration agreement should identify the acting identity and the permissions checked by the target system. Include denied actions in the acceptance plan.
Remove access and observe the result
A revocation check starts with documented access and a known expected answer. Remove the chosen authorization through the administration procedure and record the time. Check other groups, sharing links and direct access that could preserve permission. An apparent removal from one group does not establish that every access route is gone.
Repeat the question in a new conversation, then examine the previous conversation and direct document access. Keep dated observations with the configuration. Do not promise a universal propagation delay without documentation for the mechanism involved and measurements in the relevant environment. Send a reproducible discrepancy to the technical owner with enough information to investigate.
Information already copied into a message, screenshot or export does not disappear merely because source access is removed. Define answer-sharing rules and incident handling with the organization. In a custom business application, also check caches and conversation spaces added by your own solution. Those components create additional behaviour your team must verify.
Repeat acceptance work during the announced transition
Microsoft announced a SharePoint agent transition on October 30 in a post updated November 4, 2026. Changes to agent creation are scheduled to begin in mid-November. Existing .agent experiences are expected to remain usable through the end of March 2027, with disabling planned for April.
These dates are an announced schedule to verify for your organization. Inventory existing agents and assign an owner for their transition. Changing the creation experience does not repair library permissions. Review agent access, source access, licensing and the places where users find the agent as part of the move, then repeat the relevant questions.
To approve access, the data owner reviews the matrix and outstanding discrepancies. The technical team keeps the tested version and any applicable method for restoring the previous operation. Repeat questions after changes to groups, sources or the agent experience. The useful evidence is an observed answer for a known profile, together with its expected result and unresolved exceptions.
Related implementation guides
FAQ
Does sharing an agent grant document access?+
Microsoft distinguishes agent permissions from permissions to its sources. Check both layers and the licensing or billing conditions for the experience involved.
Should testing use an administrator account?+
An administrator account supports management operations. Answer acceptance requires representative profiles with their actual rights, including a guest where relevant.
Does revocation erase previously shared answers?+
It does not guarantee removal of copies, screenshots or exports. Define retention and sharing rules, then observe conversations under the actual configuration.
Does migration fix oversharing?+
Review source permissions separately. A new agent experience does not replace that review or the need to repeat questions with each profile.
When should tests be repeated?+
After changes to groups, sources, sharing or the agent experience, repeat the affected scenarios and retain results with any outstanding exceptions.
Prepare an access matrix for your agent
Daillac can help select test profiles, source documents and criteria for checking your confidentiality rules.
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