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Computer Use: Agents on Legacy Systems

🔌 MCP & Computer Use in Power Platform15 min1000 BASE XP

Navigating the Unintegrated World

Not every enterprise system has an API. Legacy ERP systems, government portals, and decades-old line-of-business software often present only a graphical user interface. In 2026, Copilot Studio agents can interact with these systems using Computer Use — the same capability available in Claude's API, now integrated into the Power Platform ecosystem.

How Copilot Studio Computer Use Works

  1. Screenshot Capture: The agent takes a screenshot of the target application (running in a secure sandbox).
  2. Visual Reasoning: The model analyzes the screenshot to identify UI elements, buttons, fields, and forms.
  3. Action Execution: The agent moves the mouse, types text, clicks buttons, and navigates menus — just like a human operator.
  4. Self-Correction: If an action fails (element not found), the agent re-analyzes and adapts its approach.

Use Cases

IndustrySystemAutomation
FinanceLegacy banking ERPExtract account balances, process transactions
GovernmentCitizen portalsSubmit forms, check application status
HealthcareClinical systems (HL7/FHIR-less)Enter patient data, retrieve records
ManufacturingSCADA/HMI systemsMonitor parameters, adjust settings

Safety & Governance Requirements

Computer Use in enterprise requires strict sandboxing:

  • Isolated VM: The target application runs in a dedicated, network-restricted virtual machine
  • Action logging: Every mouse click, keystroke, and screenshot is logged to Purview for audit
  • Human-in-the-loop: High-stakes actions (form submissions, data deletion) require human confirmation
  • Scope restrictions: Agents can only interact with pre-approved applications; arbitrary web browsing is blocked
🔒 Security Note: Computer Use should only be deployed in isolated sandboxes. Never allow a Computer Use agent network access to production systems without strict firewall rules — prompt injection via UI content could potentially command the agent to perform unauthorized actions.
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When is Computer Use the right tool for Power Platform automation?
Always, it's better than APIs
When the target system has no API and can only be interacted with through its graphical user interface
Only for Microsoft products
When RPA desktop flows fail
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Computer Use: Agents on Legacy Systems | MCP & Computer Use in Power Platform — Power Platform Academy