This guide will provide you with six ways to fix Minecraft Error Code: 0x80070057 | UNKNOWN code: Deep Ocean. Something went wrong.
Method 1: Update Drivers
1- First, you must ensure that your Windows is fully updated. Go to the bottom left side of your screen to the Search button, write “update” on it and click on “check for update.”
2- A new window will pop up, navigate down, and click “check for updates”. It will scan your machine to see if there are any updates available.

3- Now, open Microsoft Store and go to Library from the bottom left side of the screen. Click on Get updates from the top right side. After the update is done, restart pc and relaunch Minecraft to check if the problem is fixed.

Method 2: Repair & Reset Minecraft Launcher
1- Open the Settings menu and click on Apps from the left side. Select Installed apps, scroll down, look for Minecraft Launcher, click on the three dots, and then select Advanced options from the drop-down menu. Press Repair and then Reset. Then try running the launcher now and see if it works or not.

Method 3: Reset Microsoft Store
1- First, press the Windows key on the bottom left side of the screen and type “wsreset”. Right-click on wsreset from the results and select Run as administrator from the drop-down menu.

2- A black window should appear; let it run for about a minute or so. After the process is completed, Microsoft Store will open up; then you can try launching Minecraft and see if it works.

Method 4: Play Minecraft on the Xbox app
1- If you already have the Xbox app installed, then open Xbox app and launch Minecraft. If not already, open Microsoft Store, navigate to the search box, and type Xbox. Select the Xbox app from the results and click on Get.

2- Once the installation is done, open the Xbox app, then Play Minecraft and check if the issue is fixed. If not working, then open the Xbox app and sign out and sign in back. Try relaunching Minecraft and check if the problem is solved.

Method 5: Restart Xbox Services and Gaming Services
1- First of all, press the Windows key + R, then type “services.msc” and press Enter. Scroll down and find Xbox services. Right-click on Xbox Accessory Management Service and select Properties from the drop-down menu.

2- Now, change the Startup type to Automatic and click OK. On the left side of the screen, click on “Restart the service”. Do the same thing on other Xbox services. Next, find Gaming Services and then restart it. Once done, relaunch Minecraft and check if the problem is fixed.

Method 6: Uninstall and reinstall Minecraft.
1- First, open up the Settings menu and click on Apps. Select Installed apps, scroll down, and look for Minecraft Launcher. Click on the three dots, select Uninstall from the drop-down menu, and restart your PC.

2- After the reboot is done, open Microsoft Store and reinstall Minecraft Launcher. Finally, try running the launcher and see if it works or not.

Method 7: Uninstall and reinstall Windows Store
1- First, press the Windows key, then type “Windows PowerShell”. Right-click on Windows PowerShell. From the result, pick Run as administrator, type the following command, and then press Enter.
Get-AppxPackage windowsstore | Remove-AppxPackage

2- Next, restart your pc and reopen Windows PowerShell, then type the following command and press Enter. Relaunch Minecraft, and hopefully, your problem will be fixed.
Get-AppxPackage -allusers Microsoft.WindowsStore | Foreach {Add-AppxPackage -DisableDevelopmentMode -Register "$($_.InstallLocation)\AppXManifest.xml"}
