Data Import & Export

How to Fix Cannot Import a Large Excel List Into SharePoint

Maira Mehtab Sep 20, 2026 868 views

Question details

The user is unable to import a large Excel file containing approximately 1,500 rows and 300 columns into a SharePoint list.

Product: Microsoft Excel, SharePoint
Device & OS: not provided
Scenario: Exporting a large dataset with an unusually high number of columns from Excel directly into a SharePoint list.
Observed behavior: The import process fails to complete, likely because the 300 columns exceed SharePoint's internal list limitations.

Before you start

Before attempting the export again, review SharePoint's column limits and ensure your Excel data is properly formatted as a Table.

Solution 1Recommended

Reduce Columns and Export Data as a Table

SharePoint has strict column limits depending on data types. Reducing the number of columns and formatting the data as an Excel Table is the most direct way to resolve import failures.

SharePoint lists cannot typically handle 300 columns in a single import due to SQL server row-wrapping limits. By reducing the column count and utilizing the native 'Export Table' feature, you can bypass the error.

Create a test copy of your workbook

Duplicate your original Excel file to prevent data loss. Open the copy and delete non-essential columns to bring the total column count below 200.

Format your data as a Table

Highlight your dataset, navigate to the 'Home' tab on the ribbon, and click 'Format as Table'. Choose any style and make sure the 'My table has headers' box is checked.

Export to SharePoint List

Click anywhere inside your newly formatted table. Go to the 'Table Design' tab (which appears when the table is selected), click 'Export', and choose 'Export Table to SharePoint List'. Follow the wizard prompts to enter your SharePoint site URL.

Check Column Types: SharePoint counts different column types differently. Multiple lines of text or lookup columns consume more data limits than single lines of text.

Solution 2

Use Microsoft Access as an Intermediary

If Excel's direct export continues to fail, Microsoft Access can be used to handle large datasets and export them to SharePoint with better error handling.

Free Microsoft Office alternative

Manage Large Spreadsheets Seamlessly with WPS Office

While integrating directly with SharePoint lists requires the Microsoft ecosystem, WPS Office provides a lightweight, highly compatible alternative for organizing, editing, and analyzing massive datasets without slowing down your computer.

1. Download the software: Visit the official WPS Office website and download the free installation package.
2. Install and launch: Follow the on-screen instructions to install WPS Office and open WPS Spreadsheet.
3. Open your large datasets: Drag and drop your massive Excel files into the application to edit them effortlessly.

Fully compatible with Microsoft Excel (.xlsx, .xls, .csv) formats.Lightweight architecture handles thousands of rows and columns smoothly.Familiar user interface guarantees zero learning curve for Excel users.Advanced table formatting and data filtering available completely for free.

microsoft office alternative - wps office

Frequently Asked Questions

What is the maximum number of columns I can import into a SharePoint list?

While SharePoint can theoretically support up to 276 single-line text columns, the actual limit depends on the combination of column types used (like choice, lookup, or multiline text). It is recommended to keep your columns well under 200 for a stable import.

Why is the 'Export Table to SharePoint List' option grayed out in Excel?

This option is grayed out if your data has not been formatted as an Excel Table. It can also be disabled if the workbook is in a shared or co-authoring mode, or if you are using a strictly online version of Excel instead of the desktop app.

Can I import a CSV file directly into SharePoint instead of using Excel?

Yes, you can create a new SharePoint list and select the 'From CSV' option. However, the exact same column limitations and data validation rules apply as if you were importing from an Excel workbook.

Excel & Data Problems