Hi, if your still facing the issue you can follow the steps below
Check the software: If there are no hardware issues, check the software on the server. Make sure that the server is running the latest version of the operating system and that all updates and patches have been applied. You may also want to run a virus scan and malware removal tool to check for any infections.
Check the network: If you're experiencing intermittent connection issues, you may want to check your network configuration. Ensure that your server is properly connected to the network and that there are no issues with the network hardware, such as a faulty switch or router.
Monitor server performance: Use monitoring tools to track server performance and identify any issues. This can help you pinpoint the root cause of the performance issues and take steps to address them.
Seek professional help: If you've exhausted all troubleshooting steps and the issue persists, it may be time to seek professional help. May it be by Roku or by Lenovo support.
I hope that helps
Good Luck
You aren't being specific enough about your issue. Your Roku doesn't require a server (or anything else) on your network. Are you referring to using something like Plex? Or perhaps a DLNA server that you are watching content with the Roku Media Player channel? We need information like this to understand the problem you're having.