Fix Excel for iPad Cannot Open CSV or XLS Files After Update
Question details
The user is unable to open previously functioning CSV and XLS spreadsheets using the Excel for iPad app, which now displays an unsupported file error following an app update.
- Product
- Excel for iPad
- Device & OS
- iPadOS 15.3.1
- Scenario
- Trying to open existing CSV or XLS files on an iPad Pro after updating the Excel app to version 2.59.1.
- Observed behavior
- The Excel application incorrectly reports that standard CSV and XLS files are unsupported and refuses to open them.
Ensure you have access to a secondary device, such as a Windows PC or a Mac, and verify that your iPad is connected to the internet so you can sync files via OneDrive or SharePoint.
Verify File Integrity and Recreate the Workbook via Web
Use the web version of Excel on a desktop browser to confirm the files are not corrupted, then transfer the data to a fresh workbook that the iPad app can read.
Sometimes an app update introduces compatibility bugs with older file formats. By recreating the file as a newer XLSX workbook through Excel for the web, you can bypass the local iPad app's error.
Open a web browser on your Mac or PC, navigate to the Office website, and log in to your Microsoft account to access Excel for the web.
Upload and attempt to open the problematic CSV or XLS files. If they open without any error messages, the files are intact and not corrupted.
Open a new, blank workbook in Excel for the web. Select all the data from your original CSV or XLS file, and paste it into this new workbook.
Save this newly created workbook to your OneDrive for Business or SharePoint account so it syncs with your mobile devices.
Launch the Excel app on your iPad Pro, navigate to your cloud storage, and open the newly created workbook.
Reset or Reinstall the Excel App
Clear out any corrupted local app data or temporary files by resetting the Excel application, or completely reinstalling it from the App Store.
Open CSV and XLS Files on iPad Easily with WPS Office
If Microsoft Excel on your iPad is failing to open older file formats like CSV and XLS due to update bugs, WPS Office provides a reliable, lightweight, and free alternative. It offers excellent compatibility with all Microsoft Office file formats, a familiar user interface, and seamless migration so you can continue your work without interruption on any iOS device.
- 1. Download the App: Go to the App Store on your iPad, search for WPS Office, and download the application for free.
- 2. Import Your Documents: Open WPS Office and grant access to your local files or connect your cloud storage accounts like OneDrive or iCloud.
- 3. Open the Spreadsheet: Navigate to your CSV or XLS file and tap it. WPS Office will open the file natively without unsupported format errors.
Frequently Asked Questions
Why is Excel for iPad suddenly saying my CSV file is unsupported?
This is typically caused by a bug introduced in a specific version update to the Excel for iOS app (such as version 2.59.1), which temporarily breaks the app's ability to recognize or process older or plain-text formats like XLS and CSV.
Can I open XLS files in read-only mode on the iPad?
Under normal operating conditions, Excel for iOS can open XLS files natively, sometimes prompting a read-only mode. However, if a software update bug is actively blocking the format, it will fail entirely until you use a workaround like Excel for the web or a compatible alternative app.
How do I report this unsupported file bug to Microsoft?
Open the Excel app on your iPad, tap your profile picture or the settings gear icon, select 'Help & Feedback', and choose 'Tell Us What Can Be Better'. This sends the bug report directly to the Microsoft development team.
