Arc app - won't let me sign in.

Roon Software Discussion ARC
1

Hi Roon community, rookie user here.

I recently upgraded from using my Mac as the Core server during a subscription trial period to the purchase of a new Roon Nucleus One. Everything is working perfectly within my home network — Roon Core is running fine, and my audio zones (including my Cambridge streamer) are all functioning correctly.

However, since switching to the Nucleus One, Roon ARC no longer works on my iPhone/Ipad. The app launches, but when I attempt to log in, I get this error:

“There was an error logging in: InvalidRecaptcha”

To troubleshoot, I’ve already tried:

  • Deleting and reinstalling the ARC app
  • Clearing Safari cache and website data
  • Disabling Private Relay and ad blockers
  • Ensuring Content Restrictions are off
  • Rebooting the phone
  • Trying both Wi-Fi and mobile data
  • Verifying that the Core is accessible from other devices
  • Confirming that my Roon account credentials are working on other platforms

Roon ARC was working fine when the Mac was running as Core, so the issue seems tied to the switch to the Nucleus One.

Any advice or insight would be hugely appreciated.

Thanks in advance,
Sean

2

This behavior is often caused by browser or network settings interfering with the login process. Please follow the steps below:

Step-by-Step Troubleshooting Guide

1. Clear Safari’s Cache and History (iOS)

  • Open the Settings app.
  • Scroll down and tap Safari.
  • Tap Clear History and Website Data to remove cached files and cookies.

2. Adjust Safari Privacy Settings (iOS)

  • Go to Settings > Safari > Privacy & Security.
  • Make sure the following settings are disabled:
    • Block All Cookies
    • Prevent Cross-Site Tracking

3. Clear Chrome’s Cache and Cookies (Android)

  • Open the Chrome app.
  • Tap the three dots menu (top-right corner) and select Settings.
  • Tap Privacy and security > Clear browsing data.
  • Choose Cookies and site data and Cached images and files, then tap Clear data.

4. Adjust Chrome Site Settings (Android)

  • In Chrome, tap Settings > Site Settings.
  • Make sure that:
    • Cookies are allowed.
    • JavaScript is allowed.
    • Pop-ups and redirects are allowed (temporarily if needed for login).

5. Switch Networks (iOS and Android)

  • If you’re connected to a Wi-Fi network, switch to cellular data.
  • If you’re on cellular data, connect to a Wi-Fi network.
  • This can reset the DNS path and resolve login issues.

6. Verify Date and Time Settings (iOS and Android)

  • Go to Settings > General Management > Date and Time (Android) or Settings > General > Date & Time (iOS).
  • Ensure Set Automatically or Use Network-Provided Time is enabled.

7. Try Logging in via Web (iOS and Android)

  • Open Safari (iOS) or Chrome (Android).
  • Navigate to account.roonlabs.com and try logging in.
  • This helps verify your account works outside the app.

8. Clear Roon Account Session History (iOS and Android)

  • While logged in at account.roonlabs.com, navigate to your session history.
  • Remove any outdated or unnecessary sessions that might interfere with new logins.

9. If Using Opera Browser (iOS or Android): Disable Content Blocking

  • Tap the browser’s menu while on the Roon login page.
  • Look for the content blocking or privacy settings.
  • Disable content blocking specifically for this page.

Reinstall the App (if needed)

For iOS:

  • Delete the Roon app from your device.
  • Restart the device.
  • Reinstall the app from the App Store.
  • Attempt to log in again.

For Android:

  • Go to Settings > Apps > Roon.
  • Tap Uninstall.
  • Restart the device.
  • Reinstall Roon from the Google Play Store.
  • Attempt to log in again.
3 Likes
3

Hi I’m getting this today on my A&K 3000m having reset/ updated my password for roon. Have tried re installing cleared cache restarted Check new password does work on iMac (core) and iPhone Arc works ok there but will not log into the A&K DAP now. Getting Sam message as above.