On your xbox if you are seeing error code 0x87e11838 the this means that your console data is corrupted and you need to try to delete all locally saved files and other methods to fix this issue of 0x87e11838 on xcode.

Xbox Error Code 0x87e11838
Power Reset or Soft Reset xbox console
Step 1: Press and Hold Power Button on xbox console and wait for xbox to completely turn off.
Step 2: Now, unplug the power cable connected to wall socket and wait for 60 seconds to 2 minutes.
Step 3: After 2 to 3 minutes -> Plug back removed xbox console power cable to wall socket.
Step 4: Press the xbox button and start xbox console and your issue of xbox error code 0x87e11838 will be fixed.
Once you power reset or soft reset xbox console then your issue of xbox error code 0x87e11838 will be resolved and you will be able to use xbox without error message.
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Check Xbox Server Status
If there is an issue with xbox server live then you will get this error code 0x87e11838 on xbox and go to xbox live server status and check whether there is any xbox server outage or downtime of xbox server and if there is downtime of xbox server then you need to wait for 1 to 2 hrs and then try turning on xbox.
Run Windows Troubleshooter
Step 1: Click on windows search and go to settings
Step 2: Click on Update and Security -> Click on troubleshoot
Step 3: Click on Additional troubleshooter -> Scroll to bottom and click on windows store apps.
Step 4: Click on Run the troubleshooter and wait for windows computer to detect any issue and fix any issue with xbox on its own.
Repair Xbox
Step 1: Open windows settings -> Click on Apps
Step 2: In Apps and Features search bar -> Search for xbox and click on it and select Advanced options.
Step 3: Click on Repair and wait for windows to repair xbox app.
Once windows repair xbox app then your issue of 0x87e11838 on xbox will be fixed.
Contact Customer Support
You need to contact xbox customer support and give them the error code 0x87e11838 and they will be able to run xbox console troubleshooting methods for you and fix this issue easily for you and guide you accordingly without hustle.
Factory Reset XBOX Console
Note that factory reset will erase all data from your xbox console and you need to have a backup of your console data on external hard drive or anywhere else before resettings xbox console.
Step 1: Grab your xbox controller and press x button on controller
Step 2: Select Profile -> System
Step 3: Go to Settings -> System
Step 4: Go to Console info
Step 5: Select Reset Console and you will see 2 options here, Reset and Remove everything, 2) Reset and Keep My games and app.
Step 6: Select Reset and Keep My Games and app and wait for xbox console to factory reset and if this didn’t work then you need to reset and remove everything.
Once you reset and remove everything from your xbox and factory reset xbox console then your issue of Xbox Error Code 0x87e11838 will be resolved successfully.
Why xbox Error Code 0x87e11838 appears
If your windows local game stored files are corrupted or damaged or if there are licensing issues or network related issues or the xbox server is down or having trouble syncing game data with xbox or internet connectivity issues.
Xbox series s error code 0x87e11838
If stored local data is corrupted then you will get to see this error on xbox series s error code 0x87e11838 and you need to delete saved data and power reset xbox console and fix any syncing issues with game on xbox.