Invalid file or file extension, invalid excel file format or extension

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Addendum: Your improper reinstallation has caused the installed software to be corrupted, the system to be reinstalled, and the software to be used to be reinstalled.

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The Excel file format or extension is invalid, it is related to the installation of WPS software on the computer, and the Excel registry needs to be modified to solve the problem, the solution is as follows:

1. The first step is to use the win+r shortcut key to call up the run, enter regedit, and click OK.

2. Step 2 and then launch the registry.

3. In the third step, you can open it in turn: hkey classes rootxls, double-click ab (default) in the right sidebar, and change "numeric data" to "OK".

4. In the fourth step, open it again in turn: hkey classes rootxlsx, double-click ab (default) on the right sidebar, change "numeric data" to ", and finally click OK.

5. The fifth step, take a look at it after the change, and the excel file can be opened.

The file name is invalid because of permissions, or because the file name is entered with unacceptable letters or characters.

There are rules for file names, some characters cannot use this file name, you must change this file name again, you have to change it to use English letters or Chinese characters as the file name according to the rules.

You can install an antivirus software, because after using the antivirus software, the system's built-in Windows Defender will be closed, and this problem will not occur after the defender is closed. The second is to use the 360 system first aid kit to repair the full strong Hengli mode, the 360 system first aid kit has a separate software package, you can go directly to its official website**, and you can use it after decompression. When using the 360 system first aid kit for repair, there is a high probability that many useful files will be killed by mistake.

Cause

Invalid file name" error usually occurs when trying to open or save a file in Microsoft Excel. At the same time, it may also indicate that there is a problem with the excel file name. Error messages may include that the file cannot be accessed, that the path you entered is too long, that you entered a short path, that a file could not be found, that you checked the spelling of the file name, and that the file location is correct.

The most common causes of error are file paths exceeding the 218-character limit, file names containing invalid characters, incorrect spelling of excel file names or file locations, and file renaming, moving, or deletion. Rename the file by removing any unsupported characters from the filename, and then try to save the file.

This situation is related to the installation of WPS software on the computer, and the Excel registry needs to be modified to solve the problem. Here's how to modify the registry:

1. Win+R shortcut key to call up the run, enter regedit, and click OK.

2. After that, launch the registry. Simplified.

3. Open hkey classes root in turnxls, double-click ab (default) in the right sidebar, and change "numeric data" to "OK". Eliminate the rush.

4. In the same way, open it again in turn: hkey classes rootxlsx, double-click ab (default) on the right sidebar, and change "Numeric Data" to "OK".

5. After changing it, take a look at it, and the excel file can be opened.

1. I saw that the extension of the excel file on the desktop is in the form of xlsx, which cannot be opened in the lower version of excel.

2. Open this software with a lower version of excel such as excel2007, and it will pretend to find that after entering the software, it will prompt you that the file extension is wrong and cannot be opened.

3. Close this file, right-click on this file, a slide window will appear, and you will see the rename below the most defeat, click.

4. After clicking Rename, change the suffix xlsx to xls.

5. Click anywhere on the desktop, and the naming is successful.

6. After double-clicking to enter, you will find that you can open the data.

Precautions

Only when the operating system knows (registered) the extension can be set to show and hide, unrecognized (unregistered) will always show the extension and cannot be set to hide (unless there is no extension in the first place, the tremor is missing). In the Windows My Computer or Explorer window, the displayed extension can be deleted. The following describes how to set the display and hide of extensions in Windows.