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'Failed to create communication with overlay (...)'


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From the error message, it seems to be a permission/accessibility issue to the named pipe used for communicating between overlay and Mumble.

Did you run Mumble or a hardware accelerated program from a different user? As admin? Are any of those still running?

I would expect a system restart to fix the issue.

If not, did you install additional "permission" or "security" software, or changed permission configuration in one way or another?

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