Google Form file upload not working: causes and fixes
Updated 2026-10-17. Every fact links to its source; prices are as published on each vendor's page on that date.
Short answer: when a Google Form file upload “doesn't work”, it's usually one of six things. Respondents are asked to sign in to Google (this is by design and can't be switched off), the question type is blocked because the form lives in a shared drive or your admin turned on Data Loss Prevention, a file breaks the type, size or count limits, the file sits in a shared drive, the owner's Drive is out of space, or the form is closed. Find your symptom below.
Symptom, cause, fix
| What you see | Cause | Fix |
|---|---|---|
| Respondents get a Google sign-in screen, or say “the form won't let me upload” | Required: “To answer this question, responders need to sign in to a Google Account” (Google) | Can't be turned off. Use a link field or a no-login upload page (below). Check any form with our sign-in checker. |
| “File upload” is missing or greyed out when you edit the form | The form is stored in a shared drive, or your administrator turned on Data Loss Prevention (Google) | Move the form to My Drive, or ask your admin. Details: File upload greyed out. |
| A respondent can't pick a file from Drive | “You can't upload a file from a shared drive” (Google) | Download the file to the device, then upload it. |
| A file is refused for its type, size or number of files | The form owner can restrict the number, type or size of files (Google) | Owner: raise the limits in the question settings. Size them with the upload limits calculator, or see upload limit reached. |
| A “server rejected” style error during upload | Several causes, including the owner's storage | See Server rejected upload error. |
| Uploads stopped after many responses | Files go to the owner's Drive (Google); the account's storage is shared across Gmail, Drive and Photos, up to 15 GB on a free account (Google One Help) | Free up space or add storage, then test again. If the form itself closed, its 1 GB total may be full: raise the limit. |
| Upload doesn't work in the form embedded on your website | Sign-in and embedding don't mix well | See “This form cannot be embedded”. |
| “Form is no longer accepting responses” | The form is closed (Google) | Owner: turn Accepting responses back on. |
Test your form like a respondent (2 minutes)
- Open the form link in a private/incognito window, signed out of Google.
- If a sign-in page appears before the form, every respondent without a Google account is blocked. Our free Google Form sign-in checker does the same check from a link.
- Upload a test file of the largest type and size you expect, from a phone as well as a computer.
- Look for it in the form's upload folder in your Drive and in the response sheet.
If the real problem is sign-in
The sign-in rule is the one cause you can't fix in the settings. You have three ways around it:
- Free: replace the upload question with a Short answer “Link to your file” (Response validation → Text → URL). The catch is private or expiring links and downloading each file by hand.
- Free, files in Dropbox: a Dropbox File Request lets people upload without a Dropbox account.
- Files straight into your Drive, no sign-in: put a CatchFolder upload link in the form description. It runs inside your own Google account, so files land in a Drive folder you choose, each with a row in a Google Sheet. $12 one-time covers a 30-day form (500 uploads, files up to 50 MB), or $59 a year for unlimited links. More options: Google Form file upload without sign-in.
Related
- File upload greyed out in Google Forms
- Google Forms "server rejected" upload error
- Google Forms upload without a Google account
- Google Forms file upload limits calculator
FAQ
Why is file upload not working on my Google Form?
The most common reason is sign-in: to answer a File upload question, respondents must sign in to a Google Account (Google Docs Editors Help). Other causes: the form is stored in a shared drive or your admin turned on Data Loss Prevention (the question type is then unavailable), the file breaks the type, size or count limits you set, the respondent picks a file from a shared drive, or the form is closed.
Can I turn off the Google sign-in for a File upload question?
No. Google lists sign-in as a requirement of the question type (Google), and there is no setting to remove it. Remove the upload question, or collect files on a separate no-login upload page.
Why can't I add a File upload question to my form?
Google says you can't use the question type if the form is stored in a shared drive or your administrator turns on Data Loss Prevention (Google). Move the form to My Drive or ask your admin.
Why can't a respondent attach a file from Google Drive?
Google's respondent help says you can't upload a file from a shared drive (Google). Download the file to the device first, then upload it.
Where do uploaded files go, and can storage stop uploads?
Uploaded files are stored in a new folder in the form owner's Google Drive (Google). A Google Account includes up to 15 GB shared across Gmail, Drive and Photos (Google One Help), so a full account can stop new uploads.