Discover a world of knowledge at Westonci.ca, where experts and enthusiasts come together to answer your questions. Join our Q&A platform and get accurate answers to all your questions from professionals across multiple disciplines. Get detailed and accurate answers to your questions from a dedicated community of experts on our Q&A platform.

In the context of file management and software interoperability, what are the potential causes and systematic approaches to resolving issues where Excel cannot open a file due to an invalid extension?