Failed to asssume control of browser (Edge and Chrome) in unattended mode

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Posted on by BB-27120933-0

Hello everyone,

We are currently transforming our Power Automate Desktop flows from attended to unattended on a virtual machine. However, in both browsers (Edge and Chrome) when running the flows unattended Power Automate Desktop runs into the error of failing to assume controle of the browser (Edge/Chrome). We don't experience this problem when starting the flow attended on the virtual machine. Only when we start the flow unattended on this virtual machine.

The version of Power Automate Desktop is: 2.51.00233.24350 (Microsoft Store Version: 11.2412.242.0)
The version of the extension is: 2.51.0.25

Would be great if someone can point us in the right direction. Also, please don't hesitate to contact us for any further clarifications.

Kind regards,

Bram van den Bemt

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Business Process Flows

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SaiRT14 1,988 Super User 2025 Season 2 on at

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Failed to asssume control of browser (Edge and Chrome) in unattended mode

The problem likely lies in the configuration of the browser extension, VM settings, or user session management.

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