Hello! I understand you're having trouble with NHK WORLD-JAPAN Roku TV app on your Samsung TV not connecting to the server. To get started, could you please tell me if the app was working before and suddenly stopped, or is this the first time you're trying to use it? Also, do you see any specific error message on the screen, like "cannot connect to server" or "app unavailable"?

From initial information, it’s important to know that as of September 30, 2025, the NHK WORLD-JAPAN app has become unavailable on Roku devices altogether, which might be related to the problem you're experiencing. This means the app cannot be updated or used through Roku anymore1.

If you are using a Roku device integrated inside the Samsung TV, that might explain the connection issue. Meanwhile, here are some troubleshooting steps we can try depending on your setup:

### Step 1: Verify Device and App Availability
- Confirm if your Samsung TV has Roku built-in or whether you have a separate Roku device connected.
- Check if the NHK WORLD-JAPAN app is still visible in the Roku app store on your device or if it has been removed.

### Step 2: Restart Your Devices
- Power off your TV and Roku device (if external).
- Unplug each from the power source, wait 30 seconds, then plug them back in and power on.
- Try launching the app again.

### Step 3: Check Internet Connection
- Ensure your Samsung TV or Roku device has a strong internet connection.
- Open other apps on the TV to check if they connect properly.
- You can also test the network status from the TV's settings menu to verify connectivity10.

### Step 4: Alternate Access Options
- Since the NHK WORLD-JAPAN app is currently unavailable on Roku devices as per the latest update, you might want to try streaming NHK WORLD-JAPAN directly via a different app or web browser on your Samsung TV or on another device.
- Alternatively, use the NHK WORLD-JAPAN website or official streaming options on other smart devices.

### Step 5: Update TV Firmware
- Access the Samsung TV settings and check for any firmware or system software updates.
- Keeping the TV updated often resolves app compatibility and connectivity problems7.

If after going through these steps the app still shows connection issues or you find it missing from the Roku channel store on the TV, the most likely explanation is the app discontinuation on Roku platform, which unfortunately means we can’t resolve this with usual troubleshooting.

Would you like assistance with finding alternative ways to watch NHK WORLD-JAPAN on your Samsung TV or another device while this Roku app situation is ongoing? Also, please share any error messages you see or additional details about your device setup!

Are you satisfied with this explanation and next steps?