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Custom URL handlers (e.g. teamviewer10://, st-rmm://) are not working despite correct registry entries and working in Edge/Chrome.

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Custom URL handlers for Teamviewer and Splashtop RMM are not working in Firefox (64 bit).

I've reinstalled completely (wiped from disk and registry) twice and still nothing. These handlers work fine in Edge, IE and Chrome.

I can't work this one out!

Custom URL handlers for Teamviewer and Splashtop RMM are not working in Firefox (64 bit). I've reinstalled completely (wiped from disk and registry) twice and still nothing. These handlers work fine in Edge, IE and Chrome. I can't work this one out!

All Replies (2)

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Just to confirm - this also applies to the common ones like mailto: links.