Why can't I download the Fortnite Chapter 7 Season 3 update?

We are aware that some players are unable to download the Fortnite Chapter 7 Season 3 update due to an error starting with IS-EO such as "IS-EO-Tsk-Lock!Plat-Gen:Win-5" or "IS-EO-Lnc-BldInfo:Http-403".

Our team is currently investigating this issue. In the meantime, please try the following troubleshooting steps:

• How do I clear or reset my device's cache?
• How do I reinstall Fortnite?