Watch the video:
Timestamps:
0:00 - Explanation
0:49 - Switch to another Steam download region
1:37 - Restart PC & Login again
1:53 - What to do if it still doesn't work
Unable to download games or updates on Steam due to a Manifest error? Well, this video shows you the most common ways of fixing the issue and getting the download to resume as normal. By the end, you should be able to download the update you’ve been wanting to.