Hey all,
We had the Overwatch team look into this and it appears that the majority of players are having issues due to a corrupt local cache where the hotfix data is being applied. To fix a corrupt local cache:
- Press Win+R
- Type %localappdata%
- Open Blizzard Entertainment folder
- Find Overwatch folder and delete it.
- Repair Overwatch in the Blizzard Desktop App.
- Start Overwatch and try joining the Practice Range or a any match again.
If deleting the folder does not work you can also try creating a new administrator account and then log into that account before joining a match again.
There’s another portion of players that are getting these errors due to not being able to reach our CDN (Content Delivery Network) for Overwatch. These tend to be players on less common internet connections such as mobile 4G / LTE data, business or school networks, or connections using a proxy.
To work around this type of issue you could try using a VPN as mentioned earlier in this thread, or work with your network administrator to allow the CDNs mentioned in this thread under the “Can’t download the update due to security” section.