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ProtoPie Studio Cannot Log In

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Workaround available Windows, macOS Updated November 14, 2026How we research

Quick answer

If ProtoPie Studio will not log you in, check the 2-device limit, proxy settings, and whitelist my.protopie.io and cloud.protopie.io in your firewall.

Most likely fix: Check connection and account

How to fix it

Try these in order — the most common fix is first.

  1. 1. Check connection and account

    1. Confirm your internet connection is stable
    2. Make sure you use the correct ProtoPie account
    Did this fix it?

  2. 2. Free a device slot

    1. Studio works on up to 2 devices per account at once
    2. Open your account settings and remove a device you no longer use
    Did this fix it?

  3. 3. Allow ProtoPie through firewall or proxy

    1. Check your proxy configuration is set up correctly for ProtoPie
    2. Whitelist https://my.protopie.io and https://cloud.protopie.io in your firewall or security program
    Did this fix it?

Symptoms

The login button does nothing, or sign-in fails in ProtoPie Studio.

Why it happens

  • Account already signed in on 2 devices
  • Proxy misconfigured
  • Firewall or security software blocking ProtoPie
  • Unstable internet or wrong account

This guide also covers

  • protopie cannot log in
  • protopie studio login not working

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