- When trying to download files from the Downloads tab, you get the message "This site attempted to download multiple files automatically" and no download occurs.
- Collection Manager
This is actually a warning from your Chrome browser. It means that you have OCLC's download site set to "Ask" when trying to download. You can change this by adding an exception for oclc.org and worldcat.org into the Chrome > Settings > Privacy and Security > Site Settings > Automatic Downloads setting. There's an Add button there that will allow you to enter the exception.