Excel cannot open the file because the file or file extension is invalid

Can’t open Excel file? Invalid file format or extension When you encounter this error while opening an Excel file, it means that the file format or extension is incorrect. There are many reasons for this problem, including corrupted files, wrong extensions, or incompatible versions of Excel. PHP editor Xinyi provides you with detailed solutions to help you recover Excel files and resolve errors. Read on to learn more and fix file won't open issues.

Method 1:

The excel file cannot be opened. It may be a file format problem. We change the excel file format to xls as the suffix and reopen it.

Method 2: There is a problem with the opening method

When opening the excel file, since we have not set excel as the default opening software, an error will be prompted. Select the file, right-click and select the opening method. , select excel.

Method 3: The office version is incompatible

1. We click on the Start menu and find the Microsoft Office folder.

2. Expand and check the corresponding version of excel. If the version is too low, we can upgrade the corresponding version.

Method 4: Modify the registry

1. Open the command in the run window, enter regedit, and then press OK to enter the registry.

2. In the registry, expand HKEY_CURRENT_USER->Software->Microsoft->Office.

3. Select 14 under the folder, select 14 for version 10 of office, and select 12 for version 07.

4. Then right-click in the blank space on the right, select New->DWORD, and select 32-bit or 64-bit according to your operating system.

5. Set the value to ExtensionHardening.

6. Then select the file, right-click and select Modify.

7. Set the value to 0 in the pop-up dialog box and click OK.

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