First check: Java uses unstablesmp.net. Bedrock uses unstablesmp.net with port 19132.
- Confirm the server address is spelled exactly unstablesmp.net.
- For Java, remove any old saved entry and add a fresh server using unstablesmp.net.
- For Bedrock, confirm the server address is unstablesmp.net and the port is 19132.
- Restart Minecraft if the server list is stuck on an old address.
- Use the Discord guide for announcements and support if the same issue continues.
Match the message to the next check
| What you see | What to check |
|---|---|
| Unknown host / address not found | Recheck the spelling and remove any website prefix or path. Confirm your device has an internet connection. A name lookup failure can be temporary; do not assume that changing your account will fix it. |
| Outdated client / outdated server | Record your edition and version, then check current server compatibility notices. Do not assume the Java version number applies to Bedrock. |
| Invalid session / failed to authenticate | Restart the game and check your sign-in in the official launcher. If it continues, include the exact message in a support ticket; never send account tokens or passwords. |
| Timed out / unable to connect | Recheck the address and, on Bedrock, port 19132. Check community outage announcements before repeatedly changing settings. An online status check does not guarantee that your device can reach the server. |
| Multiplayer unavailable / Add Server missing | Check account multiplayer permissions and the options supported by your device. Tell support whether you use Windows, mobile, Xbox, PlayStation, or Switch. |
What to include in a support request
Send your edition, game version, device, exact error message, and approximate time of the attempt. Crop screenshots to the relevant error and remove private account information. Mention whether the issue happens every time or only intermittently.