[Solved] How to Fix Xbox One Error 0x80270300 when Start, Install, or Update Game

Xbox One users reported that unable to start, install or update a game with 0x80270300 error code after installing the latest system update. This problem happens to both digital and disc-based games including Fallout 4, Assassin’s Creed Odyssey, Destiny 2, Forza Motorsport 6, STAR WARS™ Battlefront™, HALO 5: GUARDIANS, and more.

Below are some of the problem description and error message reported:

Not ready yet
Halo 5: Guardians needs to finish installing or show ‘Ready to start’ before you can launch it. (0x80270300)

Not ready yet
STAR WARS battlefront needs to finish installing or show ‘Ready to start’ before you can launch it. (0x80270300)

Not ready yet
Destiny 2 needs to finish installing or show ‘Ready to start’ before you can launch it. (0x80270300)

Not ready yet. Destiny 2 needs to finish installing or show 'Ready to start' before you can launch it. (0x80270300)
Not ready yet. Destiny 2 needs to finish installing or show ‘Ready to start’ before you can launch it. (0x80270300)

Not ready yet
Fallout 4 needs to finish installing or show ‘Ready to start’ before you can launch it. (0x80270300)

Not ready yet
FM6 needs to finish installing or show ‘Ready to start’ before you can launch it. (0x80270300)

Not ready yet. FM6 needs to finish installing or show 'Ready to start' before you can launch it. (0x80270300)
Not ready yet. FM6 needs to finish installing or show ‘Ready to start’ before you can launch it. (0x80270300)

To solve this Xbox One error 0x80270300, try the following possible fixes.

Content Summary

Solution 1: Check to see if the game is updating
Solution 2: Restart Xbox console
Solution 3: Reset Xbox while keeping your games (Soft Reset)
Solution 4: Delete and reinstall the game
Solution 5: Clear Cache
Solution 6: System Reset (Hard Boot)

Solution 1: Check to see if the game is updating

Step 1: Press the Xbox button to open the Xbox guide.

Step 2: Select My Games & Apps.

Step 3: Select Queue to see if the game triggering the 0x80270300 error is currently being updated.

Solution 2: Restart Xbox console

Step 1: Press the Xbox button to open the Xbox guide.

Step 2: Go to the Settings tab.

Step 3: Select Restart console > Restart, follow and agree to the on-screen prompts.

Solution 3: Reset Xbox while keeping your games (Soft Reset)

Step 1: Press the Xbox button to open the Xbox guide.

Step 2: Go to the System tab and select Settings.

Step 3: Go to System > Console info and select Reset console.

Reset console
Reset console

Step 4: On the confirmation dialog, choose Reset and keep my games & apps. You can also select Reset and remove everything if you don’t have anything of importance on your Xbox Storage that you are afraid of losing.

Reset and keep my games & apps or Reset and remove everything
Reset and keep my games & apps or Reset and remove everything

Step 5: In your games list, select your partially installed game to open its detail page in the Microsoft Store. Complete the installation by selecting Install.

Solution 4: Delete and reinstall the game

Step 1: Press the Xbox button to open the Xbox guide.

Step 2: Select My games & apps.

Step 3: Navigate to the particular game, highlight it, press the start button, and choose Manage game.

Navigate to the particular game, highlight it, press the start button, and choose Manage game.
Navigate to the particular game, highlight it, press the start button, and choose Manage game.

Step 4: Navigate to the right pane and click on Uninstall all to ensure that every add-in or update is also removed.

Navigate to the right pane and click on Uninstall all to ensure that every add-in or update is also removed.
Navigate to the right pane and click on Uninstall all to ensure that every add-in or update is also removed.

Step 5: Confirm the installation by choosing Uninstall all, then wait for the process to complete.

Confirm the installation by choosing Uninstall all, then wait for the process to complete.
Confirm the installation by choosing Uninstall all, then wait for the process to complete.

Step 6: Return to the Manage menu on the left-hand side section and go to the Ready to install section.

Step 7: Go to the right pane and select Install all.

Solution 5: Clear Cache

Step 1: Turn off Xbox One.

Step 2: Once the indicator lights on the front of the Xbox One and the console’s power brick are off, unplug the power brick from the back of the console.

Step 3: Leave it for 30 seconds to clear the cache.

Step 4: Plug the power brick back into your Xbox One and turn it on.

Solution 6: System Reset (Hard Boot)

Step 1: From the Dashboard, quit all games.

Step 2: Press and hold the Xbox button / Power button on the front of the console until it shuts the system down completely.

Step 3: Disconnect the external power from the wall plug or unplug the power cable from the back of the console so that the power brick in not connected to the console.

Step 4: Press the Power button three or four times to ensure that any remaining power in the battery is drained, clearing the cache on the console or WAIT until all power drains from the external power pack (no light, either white or dull orange showing on the pack).

Step 5: Reconnect the power supply to the electrical outlet.

Step 6: Restart the console in the usual manner. Wait for the light on the power brick to change from white to orange.

Step 7: The startup animation will show on the screen indicated that the operation was successful.

Xbox startup animation
Xbox startup animation

Source: Xbox Support > Error 0x80270300 occurs when you try to start, install, or update a game on Xbox One

Published by Thomas Apel

, a dynamic and self-motivated information technology architect, with a thorough knowledge of all facets pertaining to system and network infrastructure design, implementation and administration. I enjoy the technical writing process and answering readers' comments included.