Hey Steven,
It sounds like that the Blizzard app doesn’t have permissions to save the files. Make sure that you are starting the Blizzard app as Admin. Also disable Read Only settings for the game install folders.
If this persists, try a full reinstall of the Blizzard app:
-
Uninstall the Blizzard app
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Next type the following commands and delete any Battlenet and Blizzard folders you see in each location. Press Windows Key + R and type:
• %LOCALAPPDATA%
• %APPDATA%
• %TEMP%
• %PROGRAMDATA% -
Finally go ahead and reinstall the app from here. Make sure you run as Admin.
If this doesn’t help, it’s likely that there is corrupted data in the original install files and may require a new reinstall. You can check this thread for steps on trying to recover the old data though.