Despite the increasing challenges from competitors like Google Sheets, Microsoft Excel remains the most used spreadsheet app.<\/p>\n
It’s the app of choice in most workplace settings. What\u2019s more, it includes numerous tools that help streamline and ease workflows.<\/p>\n
Excel, like every other Microsoft app, occasionally runs into issues. Most of these are mere annoyances and can be solved with one or two program or system reboots.<\/p>\n
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.<\/p>\n
If you encounter this message when you try to open a file in Excel (or an Excel file), this guide will be helpful. We explain the possible reasons why the error can occur and three solutions that could work for you.<\/p>\n
When any user encounters this error in Excel, it’s usually due to one of two reasons:<\/p>\n
A corrupted file is unlikely to be opened by the parent program. Even if it successfully opens, it’s likely to have multiple errors such as missing data or unreadable portions.<\/p>\n
Excel and several other programs go the extra mile and simply don’t open corrupted files.<\/p>\n
It’s up to the user to try and fix the file corruption first or use another document with uncorrupted data.<\/p>\n
Sometimes, the corruption is caused by malware that infiltrated the system. This can happen if your system isn’t fully protected when working with Spreadsheets on the web.<\/p>\n
Unrelated internet activity can cause this as well. After all, some malware types are known to be distributed as macros that can attach to Office documents.<\/p>\n
It is better to be prepared for anything. Auslogics Anti-Malware<\/a> will protect you against online and offline threats, as your main or supplementary antivirus. It’s unobtrusive, lightweight, fast, and frequently updated.<\/p>\n