Скачать или смотреть Resolving Run-time error '1004' in Excel's Workbook.Open Command

Discover the reasons behind the "Run-time error '1004'" when using Workbook.Open in Excel VBA and learn how to fix it effectively.
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Understanding the 'Run-time Error 1004' in Excel VBA

If you're working with Excel VBA and trying to automate processes by opening multiple workbook files, you might have encountered a frustrating message: "Run-time error '1004': Application-defined or object-defined error." This error can halt your progress, especially when you're trying to handle multiple files in a folder. In this guide, we will dive into the reasons this error occurs and how to resolve it effectively.

The Problem Explained

When you attempt to open workbooks using the Workbook.Open command in your VBA code, an unexpected run-time error can occur. Below is the skeleton of code that typically leads to this error:

[[See Video to Reveal this Text or Code Snippet]]

Common Cause of the Error

In this specific instance, the main issue triggering the error is related to the format of the workbooks you are trying to open. Here's what went wrong:

The files you are attempting to open were supposed to be properly saved as macro-free workbooks (.xlsx) from a prior macro-enabled format (.xlsm).

Instead of being saved correctly, certain users simply changed the file extension from .xlsm to .xlsx, bypassing the proper saving process. This results in a file that cannot be opened correctly by Excel, leading to the Run-time error '1004'.

Solution: Saving Files Properly

To resolve the problem, here's what needs to be done:

Identify the files with the issue: Before running your VBA code, ensure that all files in the directory are genuinely saved as .xlsx format and not merely changing extensions.

Properly save the workbooks: Ask the suppliers of these files to save them correctly as .xlsx, rather than just renaming them. This ensures that the files contain the appropriate structure and data required for them to be opened seamlessly.

Test the VBA code again: Once you’ve confirmed that all the files are valid .xlsx workbooks, you can rerun your VBA macro without encountering the Run-time error '1004'. Properly saving the workbooks should alleviate the errors you were facing.

Conclusion

Error messages can be daunting, especially when you're deep into a coding project. Understanding the cause behind the "Run-time error '1004'" not only helps in debugging your current issues but also empowers you to handle similar situations in the future. By ensuring files are saved correctly, you can streamline your Excel automation processes and mitigate potential errors. Happy coding!