Using Large Excel files in Power Apps can be problematic due to limitations and potential issues. Excel is not a good place to store Power Apps data, but it is still commonly used. The Excel Connector in Power Apps has limitations, such as a maximum file size of 25MB and a maximum of 64,000 rows when using auto-generated IDs. Delegation issues and limited query filters can also arise. Alternatives to using Excel as a data source include SharePoint lists, Dataverse, and SQL databases. These options provide more stability and flexibility for storing and accessing data in Power Apps.
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