Summary: At times, when opening or saving an Excel file, you may encounter an error message stating "Filename is not valid". This posts mentions the possible reasons behind the error and the solutions to fix it. It also mentions an Excel file repair tool that you can use to quickly restore the file.
The “Filename is not valid” error message usually appears while attempting to open or save a file in Microsoft Excel. There are other messages you may receive suggesting there is problem with the name of your Excel file. Some of those error messages are as follows:
Irrespective of the error message you get, you may face problem loading the Excel file.
The most common cause is the file path (including the Excel file name) has exceeded the limit of 218 characters. If that’s not the case, here are some other reasons that may result in the “Filename is not valid” error:
To fix the ‘Excel file name not valid’ error, use the following methods:
Note: Before attempting the solutions, check if the spelling of the file name is correct. If it is misspelled, correct it and then try to save the file.
Make sure that the file path has fewer characters than 219. If the path exceeds the defined limit, do the following:
Ideally, an Excel file must have less than 218 characters in the file path. The file path comprises up to 31 characters in the sheet name, a cell reference, apostrophes and brackets in the file name, and an exclamation point.
Rename the file by removing any unsupported (or unusual) characters in the file name, and then try saving the file.
If none of the above solutions works for you, chances are that the problem is not with the file name, but its contents. The data in the file may be damaged, causing Excel to throw an error while opening or saving the file. You can run the ‘Open and Repair’ utility to fix the problematic Excel file. Follow these steps:
If you are unable to repair the file using the ‘Open and Repair’ utility, try using an Excel file repair tool, like Stellar Repair for Excel. The software can fix a severely corrupted Excel file while preserving its data integrity. For details, read this: How to repair corrupt Excel file using Stellar Repair for Excel?
This blog discussed some common reasons behind the “Excel File Name is not Valid Error”. The error usually occurs when the path of the Excel file is longer than 218 characters or there are invalid characters in the file name. In some cases, you may receive the ‘invalid filename’ error due to incorrect name of the file, etc. Based on the reason behind the error, try solving the issue using the solutions explained in the blog.
Charanjeet is a Technical Content Writer at Stellar®who specializes in writing about databases, e-mail recovery, and e-mail migration solutions. She loves researching and developing content that helps database administrators, organizations and novices to fix multiple problems related to MS SQL and MySQL databases and Microsoft Exchange.
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