This method is applicable only when the Excel autosave feature is turned on. It is a very helpful feature to recover unsaved Excel files. The file format is invalid error keeps haunting the Excel users. This clearly indicates that the concerned Excel XLS file extension is not recognized by the software and therefore it is declared invalid.
It is very irritating and the recovery of the original file format is almost impossible. Well the invalid xls file format error is faced by the users when:.
Here we have tried our best to provide a reliable solution to fix the error. She writes tech blogs and expertise on MS Office, Excel, and other tech subjects. Her distinctive art of presenting tech information in easy to understand language is very impressive. Users can paste data from the Office Clipboard into Word, Excel, and PowerPoint if the Office Clipboard data is in one of the formats shown in the following table. If the file format that users want to use is not supported, they can try the following methods to open the file.
Search the internet for a company that makes file format converters for file formats that are not supported in the application. Save to a file format that another program supports. For example, users might want to import their Word, Excel, or PowerPoint file into another program that does not support the application's native file format. However, the other program might support importing another supported file format, such as a text file format. In this case, users can save their work in text file format, and then from the other program, import the text file.
Skip to main content. This browser is no longer supported. Download Microsoft Edge More info. Contents Exit focus mode. Please rate your experience Yes No. Any additional feedback? Submit and view feedback for This product This page. View all page feedback. In this article. Users who want to include UI customizations or macros in the template should use this file format. Template for creating new Word , Word , Word , Word , and Office Word files that do not contain macros.
A web page that is saved as a folder that contains an. If users save in filtered HTML and then re-open the file in an Office application, text and general appearance are preserved. However, some features might work differently. A web page as a single file that includes an.
Besides, if you lost Excel files, you can download EaseUS data recovery software to recover your files. About the Author. Reviews and Awards. The file format of an Excel worksheet is. Whenever the user opens any file, it is opened with the same extension. However, some users may encounter an error when trying to open or edit an Excel file in Office , , , , , , and The error message displayed reads "Excel cannot open the file because the extension is not valid".
This article will provide you with three effective solutions to resolve the "Excel cannot open the file because the file format or file extension is not valid" error. You can change the file extension, use the Office repair utility, or use one of the best data recovery software to repair Excel files. Sometimes, when you try to open or edit an Excel file in Microsoft Office , , , , , , or , you may encounter the following problem:.
Verify that the file has not been corrupted and that the file extension matches the format of the file. It usually indicates the file is not compatible with the Excel version of the file that has come corrupt or damaged.
Here, we will show you all the possible solutions, and you can try these until your issue is fixed. Before you follow the solutions, check if Excel is working normally. Step 1. Loading Excel without templates and add-ins allows you to see if the program works as it should or if it is corrupted.
Step 2. If Excel opens normally, check for any add-ins that are causing problems in Excel. Disable the add-ins and click on the "OK" button. Then, restart Excel to check if the problem is fixed.
If not, move on to the fixes below. There are three useful solutions in total here to solve the Excel cannot open file issue. Besides, two methods are provided to recover Excel when the file format or file extension is not valid.
If the "Excel cannot open the file because the extension is not valid" problem is caused by file corruption and not by file compatibility, you need a professional file repair program to help you fix the problem.
EaseUS Data Recovery Wizard is an all-in-one tool that can help recover deleted files and repair corrupt files easily and efficiently. Ghost Chili. B-C This person is a verified professional. Verify your account to enable IT peers to see that you are a professional. Mark Whynot wrote: yes This really old discussion helped me with an xls file doing the same thing Just glad this thread was there Had this issue.
Sure enough it was a word document saved with the wrong extension! Nicbot Jun 30, at UTC. OS X Hope this helps someone. This topic has been locked by an administrator and is no longer open for commenting.
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