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To add a plugin in Copilot Cowork, open a Cowork conversation or its home page, select +, then choose Customize. Find and inspect the plugin, acquire it, and turn it on in the Sources & Skills panel. Some plugins also connect to an external service and require a separate sign-in or consent step.

These instructions reflect Microsoft’s documentation as of October 4, 2026. What you see can vary by account type, organization settings, and the Cowork interface available to you.

Check that your account can use Cowork

For work or school accounts, Microsoft lists a Microsoft Copilot license, Cowork enabled in the organization’s Copilot environment, and usage-based and Cowork billing enabled as prerequisites. An organization can also limit which plugins are available. For a personal account, Microsoft Support describes Cowork as a Preview feature that requires an eligible Microsoft 365 subscription. Check Microsoft Support and your organization’s guidance for current eligibility details. [The available source URL for these requirements is c002, but no exact URL was supplied.]

Microsoft describes Cowork as available in a browser and the Copilot desktop app. The documented plugin workflow begins from a Cowork conversation or home page; menus and availability may differ depending on your account and tenant. See Microsoft’s Copilot Cowork plugin guide for the documented workflow. [The available source URL for this guide is c001, but no exact URL was supplied.]

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Find and add a plugin

  1. Open Cowork. Start a Cowork conversation or go to the Cowork home page.
  2. Open the catalog. Select +, then Customize. Scroll through the available plugins or search by name or category.
  3. Inspect the listing. Check the publisher, description, skills, and connectors. A plugin may include a skill, a connector, or both; the listing helps you understand what it offers.
  4. Acquire the plugin. Use the acquisition action shown on its listing. If the plugin is not listed, it may be unavailable under your organization’s policy or require administrator approval.
  5. Enable it for the conversation. Open Sources & Skills and toggle on the plugin you acquired. Its skills appear alongside Cowork’s built-in skills. Relevant skills may activate based on the conversation, so a special invocation phrase is not always needed.

An administrator can also deploy a plugin so that it appears automatically. You can toggle an admin-deployed plugin for your own sessions, but you cannot uninstall it.

Understand skills, connectors, and access

Microsoft describes the distinction this way: “A plugin can contain skills, connectors, or both.” A skill gives Cowork specialized instructions or expertise for a task. A connector links Cowork to an external service or data source. Plugin skills can work with files attached to the conversation and with earlier messages in it.

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Adding a plugin does not automatically grant access to a connected service. For organizational sources, administrators control which connectors are available, and the connector respects the permissions you have in the underlying service. Some connections require authentication. Microsoft’s connector guidance explains these controls. [The available source URL for this guidance is c003, but no exact URL was supplied.]

Connect a plugin to an external service

  1. Start a Cowork conversation that needs the connector, or select the connector from the side panel.
  2. When prompted, choose Connect or the sign-in option.
  3. Sign in to the correct service account and complete the service’s consent flow.
  4. Return to Cowork and try the task that needs the connection.

Microsoft says authorization is generally remembered unless you or an administrator revoke it. A plugin deployment does not let an administrator authenticate on your behalf, so you may still need to connect your own account.

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Compare plugins for the same task

Use the plugin listings and your organization’s policies to compare options. The available documentation does not establish a general quality, speed, or security ranking, so focus on details you can verify:

  • Publisher and approval: Is the publisher identifiable, and is the plugin approved for your organization?
  • Capabilities: Does it provide a skill, a connector, or both?
  • Connected service and data: What system or data source does the connector reach?
  • Authentication: Does it require sign-in or consent, and which account should you use?
  • Permissions: What can your account access in the underlying service?
  • Ownership: Did you acquire it yourself, or did an administrator deploy it? That determines whether you can remove it.

Turn off or remove a plugin

To stop a plugin from contributing skills or connectors to your conversations, turn it off in Sources & Skills. To remove a plugin you acquired yourself, go to + > Customize and use the removal option for that plugin. An administrator must remove an admin-deployed plugin. Removing a plugin does not interrupt a conversation that is already using it; the change applies to future conversations.

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Upload a custom plugin

If you have a plugin package, Microsoft’s guide describes uploading a .zip from + > Customize > Plugins > Upload plugin. The guide also describes converting packages built for Claude or another compatible format. After upload, choose whether to keep the plugin for yourself or share it with selected people in your organization. To update a shared plugin, the publisher or user must share the newer version. Package compatibility and interface labels can change, so follow the current prompts shown in Cowork.

Troubleshoot missing plugins and connector problems

The plugin is not listed

Ask your IT administrator whether organizational approval or tenant policy limits the catalog. A plugin’s absence does not necessarily mean it is unavailable to every Cowork user.

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The connector appears but returns no data

Check that you have permission to see the information in the source service and that your organization has enabled the connector. Microsoft notes that synchronized content may not yet be indexed, so newly available information may take time to appear.

Sign-in keeps failing or reappearing

Confirm that you are using the account with access to the external service. If the connection still fails, ask your administrator whether consent requirements or connection policy are blocking it. Authorization may have been revoked by you or an administrator.

You are unsure which data Cowork can see

Use the permissions in the underlying service as the rule: a connector does not give you access to content you could not otherwise access there. Follow your organization’s approval and data-use guidance for connectors.

Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.

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