You will likely need to sign out of your account and sign back in (or restart your computer) for the changes to take effect.
There are specific scenarios where the automatic Windows Update method fails or isn't an option. For example: windows 8.1 language pack download
Remember: Never pay for a "Windows 8.1 language pack download." Microsoft has never charged for them. Any website asking for your credit card is a scam. You will likely need to sign out of
If your PC is not connected to the internet, you may need a manual installer: you may need a manual installer: