Sometimes, when opening a file in Excel, the program displays this error message instead:Įxcel cannot open the file because the file format or file extension is not valid. How to Fix the “Excel Cannot Open the File Because the File Format or File Extension Is not Valid” Issue on Windows 10 Excel can open files with other extensions, including html. In addition, documents in these non-Excel file extensions can be opened by the program, though functionality might be reduced in some fashion: That’s because the file extension is compatible with Excel: If the file you’re attempting to open is in one of these formats, it won’t open because it’s been corrupted. A glance at the file extension will tell you straight away whether the program can open that file. Versions of Excel since 2007 use Office Open XML as the primary file format but are backward-compatible with the earlier versions of Excel files. Sometimes, this error could be due to incompatible or unsupported file formats. It’s unobtrusive, lightweight, fast, and frequently updated. Auslogics Anti-Malware will protect you against online and offline threats, as your main or supplementary antivirus.
It is better to be prepared for anything. After all, some malware types are known to be distributed as macros that can attach to Office documents. Unrelated internet activity can cause this as well. This can happen if your system isn’t fully protected when working with Spreadsheets on the web. Sometimes, the corruption is caused by malware that infiltrated the system. It’s up to the user to try and fix the file corruption first or use another document with uncorrupted data. Excel and several other programs go the extra mile and simply don’t open corrupted files. Even if it successfully opens, it’s likely to have multiple errors such as missing data or unreadable portions. When any user encounters this error in Excel, it’s usually due to one of two reasons:Ī corrupted file is unlikely to be opened by the parent program. Excel Cannot Open the File Because the File Format or File Extension Is not Valid We explain the possible reasons why the error can occur and three solutions that could work for you.
If you encounter this message when you try to open a file in Excel (or an Excel file), this guide will be helpful. However, the “Excel cannot open the file because the file format or extension is not valid” issue has proved to be more bothersome for several users. Most of these are mere annoyances and can be solved with one or two program or system reboots. What’s more, it includes numerous tools that help streamline and ease workflows.Įxcel, like every other Microsoft app, occasionally runs into issues. It’s the app of choice in most workplace settings. Despite the increasing challenges from competitors like Google Sheets, Microsoft Excel remains the most used spreadsheet app.
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