Write-back not working on my Excel file

🔧 Troubleshooting Updated 19 May 2026 22 views

Check your browser

Excel write-back uses the File System Access API, which is only supported in Chrome and Edge. It does not work in Firefox or Safari. Make sure you are using a supported browser.

Check your plan

Write-back requires a Pro plan or higher. On the free plan, the "Connect to file" option is hidden, and the Edit button shows a lock icon. Upgrade to Pro to enable write-back.

File permissions

Make sure the Excel file is not read-only or open in another application (e.g. Excel). If the file is locked by another app, SheetForge cannot write to it.

Reconnect the file

File System Access permissions are session-based. If you refresh the page or open the app in a new tab, you will need to reconnect to the file by clicking "Connect to file" again.

Still not working?

Submit a support ticket with details of your browser version, OS, and what error message (if any) you see.

Was this article helpful?

Still need help? Our support team is here.

Sign in to submit a ticket