Thank you for reaching out and for your detailed report.
After we enabled diagnostic mode on your account, we can see that RAATServer is failing to start properly. This typically happens when a local security process — such as antivirus, firewall, or endpoint protection software — blocks Roon’s internal communication loopback (127.0.0.1).
Please try the following steps to narrow this down:
Restart your computer and any connected audio devices.
Temporarily disable antivirus or security software (for example, Windows Defender, McAfee, Norton, etc.) and then launch Roon again.
Check the Windows Firewall settings:
Open Windows Security → Firewall & network protection → Allow an app through firewall.
Ensure that both Roon.exe and RAATServer.exe are allowed on Private and Public networks.
Inspect the Windows Event Viewer:
Go to Event Viewer → Windows Logs → Application.
Look for any warnings or errors mentioning Roon or RAATServer around the time you tried to start the app.
If possible, attach a copy or screenshot of these entries.
After completing these steps, reboot the PC once more and check if RAATServer launches correctly.
Please let us know:
Whether RAATServer now starts after reboot,
If you find any relevant entries in the Event Viewer,
And whether your security software showed any notifications related to Roon or RAATServer.
This information will help us determine whether a local security layer is preventing RAATServer from starting, or if something else is interfering with Roon’s background services.
Have you had a chance to try the steps that @vadim provided above?
Roon updates often reset the Windows Defender firewall to default settings, which can block RAATServer.exe. Please ensure you’ve added Roon’s processes as exceptions to the firewall.
Do you have any consumer VPNs active on the machine with which you use Roon?
We’ll watch for your response. Without any new posts from the OP, this thread will close due to inactivity after several days. Thank you!
Vadim via Roon Labs Communityさん。 @zvl02623 Sekiguchiです。
先程、そちらから求められたイベントビューアでのRAATserverに関する通知の表示画像ですが電子メールではそちらへ返信が出来なくされてスクリーンショットが送る事が出来ません。以下に文言を転記します。“Application: RAAtserve.exe CoreCRL Version: 6.0.3624.51421 .NET Version:6.0.36 Descr.exe CoreCRL Version: 6.0.3624.51421 .NET Version:6.0.36 Description: The process was terminated due to an unhandled exception coe c0000005, exception address 00007FFF98E9C795“
Describe your network setup
router, modem, Switch: Silent engel N8, DAC IfI: Zen DAC, streamer: IfI Zen stream
Thank you very much for providing the Event Viewer details — they’re extremely helpful. The entry you’ve shared indicates that RAATServer.exe is crashing due to an unhandled exception in the .NET runtime.
This usually happens when the .NET 6 runtime installation on Windows becomes corrupted or when Windows security software interferes with Roon’s background services. Let’s try the following steps to repair this:
I’m afraid we’re at the point of repeating suggestions we’ve already made. The fastest way to receive support is to respond to the original thread, rather than creating an additional technical support request.
Please first ensure you’ve added all Roon processes (including RAATServer.exe) to the Windows Defender firewall safelist for both public and private networks.
Please also verify that you’ve cleared Roon’s processes in third-party security (like antivirus software or other firewalls).
Can you please use some ip address lookup software (
this one for example) and examine your local network and let us know whether your zen streamer is visible in local network at all and under which ip address it falls ?
When I play Roon on GHW and check “Signal Path,” it says that Raat is playing on “This PC” and in “neo stream exclusive mode,” even though it’s not connected to any other devices.
The Status LED to the left of Zen Stream (streamer) isn’t lit. (Network connection not established.)
The device icon in “Settings” only shows Zen DAC Signature v2, not Zen Stream.
My PC was accessed unauthorizedly just before the issue started. At first, streaming video playback would cut out every few seconds, and the video window would move around as if fleeing when I moved the mouse pointer near it. Then the video window would shuffle violently, and all the apps on my PC would launch at once, overlapping dozens of windows. My PC froze and became unusable for several days. There was also unauthorized access to social media. That’s when the current issue began.
Without also having access to your Roon credentials, it’s unlikely that a malicious actor could compromise your Roon account. However, if you’ve encountered a broader security issue in your environment and wish to ensure Roon is safe, we recommend you uninstall the app and restore from a Backup:
Verify ou have a Backup available.
Exit out of Roon + RoonServer (from taskbar area)
Navigate to your Roon [Database Location](
https://kb.roonlabs.com/Database_Location
) 3
Find the folder that says “Roon Server” and "Roon"
Rename the “RoonServer” folder to “RoonServer_old” and "Roon" to "Roon_old"
Reinstall the Roon App from our [Downloads Page]([url=https://roonlabs.com/downloads]https://roonlabs.com/downloads[/url]) to generate a new Roon folder
From there, ensure that RAATServe.exe and RoonServer.exe are added as exceptions to your Windows Defender firewall.
I’m afraid it’s not quite clear what the problem is that you’re encountering with your Signal Path and the Zen Stream. Perhaps if you elaborate on the network topology - where your devices are all connected and what network sits in between - we’ll be equipped to assist more precisely.
Thank you for your patience. We’ll await your reply.
We haven’t seen a response to this thread after the weekend and we want to make sure you’ve seen the post above.
You’ll need to take steps to ensure the security of your machine outside of Roon if your device has had broader security events. However, within the scope of Roon, you can take two important steps:
Update your Roon password to ensure your credentials are safe
If you have a Backup of a previous Roon database, you can restore if per the steps in the post above. This will relegate your Roon library to an earlier version, before any unwanted changes might have been made.
This thread will close due to inactivity without any further responses, so please let us know if we can assist further. Thank you.
This thread is now closing due to lack of response. Please see the suggestions in the posts above for some immediate next steps.
From your description, there are potential vulnerabilities in your network environment that exist outside of and independently of Roon. It’s crucial that you take steps to secure your network, like verifying your router firewall is active and updated.
Please also ensure you update your Roon credentials to secure your account, although keep in mind that diagnostics show no evidence of malicious activity associated with your Roon account.