Due to many services interfering with or blocking the download, your Windows 11 language pack download can get stuck. To temporarily turn off those components, you can boot in the clean boot mode and ...

Power saver mode might limit network activity to conserve power. A slower or restricted network connection could interfere with language pack installation, resulting ...

Well lucky for you the new Windows 11 major update came out. So you have the Update Assistant route to fix it. With Windows 10 unless the Security bug was an OMG world ender i left it un-updated ...