If the cache folder on your Mac becomes corrupt (due to a power outage, for example), Excel will not launch normally.

Your Excel's cache is corrupt : To speed up its processes, Microsoft Excel (like other Mac apps) uses a cache.

If an important update is missing from your Excel app, it may not be compatible with the latest version of macOS, resulting in the error.

Your Excel app is outdated : MacOS is updated on a regular basis to keep up with technological advancements.

It could be due to a corrupt or incomplete Excel installation file, or it could be caused by a conflict with another application on your system.

There are several reasons why this error may occur. Users have complained of this “Cannot open Excel (app damaged or incomplete) since upgrading to MacOS Big Sur 11.5” What Causes the “Microsoft Excel May Be Damaged or Incomplete” Error on Mac? In this article, we'll show you how to fix a damaged or incomplete installation of Microsoft Excel so you can get back to work. If you're having issues with your Microsoft Excel installation, it might be due to a damaged or incomplete download. However, even the most experienced users can run into problems with it from time to time. Microsoft Excel is a powerful application that has many features and functions. This blog post will show you how to do just that. If you have a damaged or incomplete installation of Microsoft Excel, don't worry - there are ways to fix it. The following error may show up on your Mac: 'You can't open the application 'Microsoft Excel' because it may be damaged or incomplete.' But what happens if you're unable to launch the application? It comes with many features and functions, and it's finally available for your macOS system. Microsoft Excel is a powerful application part of the Microsoft Office suite. Trying to launch Microsoft Excel on your Mac but you get the “damaged or incomplete” installation error? This is a common error and here’s how to fix it.

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