Antivirus Quarantine Led to Server Connection Issues After Update (ref#JCJ244)

What’s happening?

· My Roon software won't start up

How can we help?

· I'm having trouble with my Nucleus hardware

Other options

· My Roon software won't start up

Describe the issue

Hi I tried to install the latest update this morning you sent 15 /05 /25 to Roon My antivirus Avast then told me it had deleted or quarantined Roon because of a virus ! I have removed Avast .However my server cannot be found although Roon does appear to be on my Android Windows 11 desktop all in one I have tried rebooting etc and tried to set up a new server nothing just a blank screen just saying cant find the Roon core etc or try to install a new core I use Tidal with Roon on my Aavik Danish streamer . I tried to uninstall the Roon app it tells me it is still running and I cant uninstall on settings ? Help I have never had this issue before Many Thanks for your help Russell Berg ./Removed the email /

Describe your network setup

I use a newish Optus modem q have speeds of 170 megabites I am in Melbourne Australia Never been an issue connecting. Its the Roon core I cant reach

Hello @Russell_Berg,

Thank you for contacting Roon Support, and I’m sorry to hear about the issues you’ve experienced with the recent update to your anti-virus databases.

The issue you’re experiencing is caused by Avast Antivirus falsely flagging parts of the Roon application as malicious and moving them to quarantine. This can break Roon’s functionality, and uninstalling Avast before restoring the quarantined files may leave the application in an unusable state — which seems to be the case here.

To resolve this, please follow the steps below:


Step 1: Close All Roon Processes via Task Manager

  1. Press Ctrl + Shift + Esc to open Task Manager.
  2. In the Processes tab, right-click and End Task on any of the following:
  • Roon
  • RoonAppliance
  • RAATServer

Step 2: Uninstall Roon

  1. Open Settings → Apps → Installed Apps.
  2. Locate Roon, click the ... menu, and select Uninstall.
  3. If Windows says it’s still running, confirm all processes were closed in Task Manager.
  4. If you’re still unable to uninstall, restart your PC and try again.

Step 3: Reinstall Roon

  1. Download the latest Roon installer from:
    Roon - Downloads
  2. Run the installer and complete the setup.
  3. Open Roon and connect to your existing Core, or set up a new one.

About the Avast False Positive

Avast may incorrectly detect Roon files (such as RoonAppliance.exe) as threats due to its heuristic scanning system. These are false positives, and Roon is completely safe to use. Every build is scanned and verified before public release.


Optional: Restore Roon Files from Avast Quarantine

If Avast is still installed:

  1. Open Avast → Protection → Virus Chest.
  2. Look for any Roon-related files, especially RoonAppliance.exe.
  3. Use the Restore and add exception option.
  4. Then go to Menu → Settings → Exceptions and add the folder:
    C:\Users\[YourUserName]\AppData\Local\Roon

Report the False Positive to Avast

To prevent this issue in the future:

This helps Avast improve their detection rules and prevents future false flags.

@Roon_Moderators - would this recent issue warrant a use of the banner notification system in the forums? I say this because it would reduce support threads tremendously, and make it a lot easier for regular forum readers and helpers by lessening redundant “content” to deal with each time we visit. It’s good for users having the problems, it’s good for Roon support, it’s really just good for everyone.

1 Like

I Have followed all instructions However even with a new password I cannot log into my Roon to connect up the server with the new Roon I downloaded . It keeps stating Captcha invalid ? I can log in ok for billing only can you please help
many thanks again for your help
Russell Berg
[moderated: private email address removed]

Just installed update on Windows 11 PC and Norton 360 Virus protection thinks roonappliance.exe is infected with IDP.Generic virus. It deleted the file but I restored it and made an exception. (Hope I don’t regret that) Same thing with RAATServer.exe file and I responded the same way. Thinks the file risk is HIGH.
I scanned the PC afterwards but it’s not detecting any viruses or any other threats.

Both Norton and Avast are flagging false positives here. Please report it to Norton for correction.

Hi @Russell_Berg1,
Sorry to hear you’re still having trouble. Here are some steps you can try to troubleshoot the reCAPTCHA error:

  1. Make sure cookies aren’t blocked. Check your browser settings to ensure that cookies are enabled, especially for the site you’re trying to access.
  2. Check for a firewall issue or content blocker. Browser extensions, antivirus software, or network-level firewalls can interfere with reCAPTCHA. Try making sure Roon is allowed through any firewalls or switching browsers to test.
  3. Change your DNS. We’ve seen users have better success by switching from their ISP’s default DNS to one of these alternatives:

Let us know if any of these steps help.

Hey @Russell_Berg1 , were you managed to go past captcha ?

Yes. I followed your instructions and removed Avira completely
Many Thanks
Russell

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