当有人试图在Windows中打开^(Windows)Excel文件时，通常会出现一个常见错误消息，即Excel 无法打开文件，因为文件格式或扩展名无效^{(Excel cannot open the file because the file format or extension is not valid)}。确保文件没有损坏并且文件扩展名与其格式匹配。尤其是当文件与Excel^(Excel)版本不兼容或已损坏^(corrupted)时，会遇到此错误消息。让我们尝试解决这个问题。

Excel 无法打开文件，因为文件格式或扩展名无效

在以下情况下会遇到此错误消息：

• 文件已损坏或损坏
• 该文件与Excel版本不兼容。

Excel中的错误可以通过下面描述的以下 3 种方法中的任何一种来修复。

1. 更改文件扩展名
2. 使用Excel中的打开^(Open)和修复功能^{(Repair Feature)}
3. 更改组权限

让我们详细探讨一下上述方法！

1]更改文件扩展名

如果您无法从其位置打开 Excel 文件，只需打开任何Excel文件^(Excel)并单击“文件^(File)”选项卡。

然后，转到Open > Browse并选择给出错误的文件。

在文件^(File)名字段下，将扩展名从“.xlsx”更改为“.xls”并保存。

再次尝试打开文件。

2]使用^(Use)Excel中的打开^(Open)和修复^(Repair)功能

点击文件^(File)选项卡并向下滚动到打开^(Open)选项。

选择浏览^(Browse)按钮，然后在出现的对话框中，选择显示错误消息的 excel 文件。

现在，单击打开^(Open)下拉按钮并从列表中选择打开和修复^{(Open and Repair)}选项。

将检查^{(Excel file will be checked for any damage)}您的Excel 文件是否有任何损坏或损坏并立即修复。

3]更改组权限

右键单击^{(Right-click)}无法打开的Excel文件，然后选择^(Excel)Properties。

当“属性^(Properties)”对话框出现时，切换到“安全^(Security)”选项卡。

点击编辑^(Edit)按钮更改权限。

文件的权限^{(Permissions)}对话框打开后，找到并单击添加^{(Add )}按钮。

该操作在确认后将打开一个新的选择用户或组^{(Select Users or Groups)}对话框。在它下面，找到高级^(Advanced)按钮。

此后，单击立即查找^{(Find Now)}以显示所有用户和组。

从列表中选择所有人^(Everyone)，然后单击确定。

再次单击确定。

现在，当您返回“权限^{(Permissions)}”对话框时，您会注意到“所有人”^(Everyone)组已附加到用户列表中。

选择Everyone组，选中^(Everyone)Allow下的所有框，然后点击Apply按钮以应用更改。

此后^(Hereafter)，您应该可以毫无问题地打开Excel文件。^(Excel)

Excel cannot open the file because the file format or extension is not valid

A common error message that usually occurѕ when someone tries to open an Excel filе in Wіndows is Excel cannot open the file because the file format or extension is not valid. Make sure the file is not corrupted and that the file extension matches its format. This error message is encountered especially when the file is either not compatible with the Excel version or it is corrupted. Let’s try to fix this issue.

Excel cannot open the file because the file format or extension is not valid

This error message is encountered in the following scenarios:

• The file has become corrupt or damaged
• The file is not compatible with the Excel version.

The error in Excel can be fixed by any one of the following 3 methods described below.

1. Change the file extension
2. Use the Open and Repair Feature in Excel
3. Change group permissions

Let’s explore the above methods in a bit of detail!

1] Change the file extension

If you cannot open the Excel file from its location, simply open any Excel file and click the File tab.

Then, go to Open > Browse and select the file giving error.

Under the File name field, change the extension from ‘.xlsx’ to ‘.xls’ and save it.

Try opening the file again.

2] Use the Open and Repair feature in Excel

Hit the File tab and scroll down to the Open option.

Select the Browse button and in the dialogue box that appears, choose the excel file that is showing the error message.

Now, click the Open drop-down button and select the Open and Repair option from the list.

Your Excel file will be checked for any damage or corruption and fixed immediately.

3] Change group permissions

Right-click the Excel file that you cannot open and select Properties.

When the Properties dialog shows up, switch to the Security tab.

Hit the Edit button to change permissions.

Once the file’s Permissions dialog opens, find and click the Add button.

The action, when confirmed will open a new Select Users or Groups dialog box. Under it, locate the Advanced button.

Thereafter, click Find Now to display all users and groups.

Choose Everyone from the list, and then click OK.

Click OK again.

Now, when you go back to the Permissions dialog, you’ll notice that the Everyone group has been attached to the user list.

Select the Everyone group, check all the boxes under Allow, and then, hit the Apply button to apply the changes.

Hereafter, you should be able to open the Excel file without any problems.

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