Select “Force Quit” from the “Apple” menu in the top left corner of your screen.Step by step process – How to fix OneDrive error code 43 on Mac Follow the steps below to see how you can resolve error code 43 for Mac. To put it another way, error 43 might mean you’re not connected to OneDrive’s servers. This means you’ll have to open the program manually, login, and make sure your computer is linked to OneDrive’s servers. When you start your Mac, OneDrive doesn’t always signify you in immediately. Let’s look at what’s producing this problem and how to repair it. When you try to open a file, however, OneDrive may occasionally display the strange error code 43, indicating that it was unable to locate the file you requested. This is a very useful alternative if you need to exchange files with someone who doesn’t have an iOS or macOS device. OneDrive is used by many Mac users to store and exchange files. When you install the OneDrive app for Mac, it downloads a copy of your OneDrive and saves it in the OneDrive folder on your Mac. OneDrive allows you to store files in the cloud, view them from different devices, and share them.