If you regularly update your apps or just download them from the App Store, this is most likely okay. However, if you're stuck with an old favorite that the developer does not want to update – like Microsoft Office 11 for Mac – you'll need to decide if you want to switch to Catalina and lose access to the app or skip updating. Update the old software , and continue using it.
Although you can pass on Catalina, we recommend updatingso that you do not lose Apple's security patches.
Before you switch to the new MacOS, learn how to check which of your apps are not suitable for Catalina.
How to Search for 32-Bit Apps on Your System
1. Click on the Apple icon in the upper left corner of your screen.
2. Select About This Mac .
3. Click System Report .
4. Scroll to the Software section and click Applications .
5. Right you can see a list of apps and a column labeled 64-bit (Intel) . If one of these apps in this column contains a No it means that they are not 64-bit apps. You must update it or find a replacement before you receive the MacOS Catalina update.
Need more information? Learnthis fall.
Originally released earlier this month. Updated to remove an incorrect reference to the number of apps that are not compatible with MacOS Catalina.