Short answer: You may be signed in with the wrong account or lack permission.
Try these steps
- Check which Google account is active in the browser.
- Switch to the account the owner intended, or request access from that account.
- Ask the owner to check the file and parent-folder permissions if access still fails.
When to ask for help
Do not ask the owner to make a private file public simply to avoid the error.
Learn more
Learn more: read this article — Share Google Drive files safely. Menu names and available features can vary by device, software version and account type.
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