The error occurs due to expired or invalid Unity verification links, often caused by link expiration or URL alterations from email providers, VPNs, browser extensions, or antivirus software. To resolve, use the latest verification email link promptly, avoid forwarding or copying links, try incognito mode, disable extensions, clear cache, switch browsers or networks, and adjust antivirus or firewall settings. If unresolved, contact Unity Customer Experience. ✨️
Cause:
The error is caused by expired or invalid verification links.
Verification links expire after a set period, and only the most recent link Unity sends is valid. The error also appears when something between the email and your browser alters the link, such as an email provider that rewrites URLs for security scanning, a VPN, a browser extension, or antivirus software.
Resolution:
Start with a fresh link, then work through the checks below if it still fails.
Use a fresh link
- Delete older verification emails and request a new one.
- Open the newest email and select the link within the time stated in it.
- Avoid forwarding the email or copying the link through apps that may alter URLs.
If the fresh link also fails
- Open the link in a private or incognito window.
- Disable browser extensions, particularly ad blockers and privacy tools, then retry.
- Clear the cache and cookies for Unity domains, then retry.
- Try a different browser.
- Turn off any VPN or proxy, or switch to a different network such as a mobile hotspot.
- Temporarily disable antivirus software or firewall, or add an exception. Check that HTTPS scanning and link-rewriting features are not blocking or modifying the URL.
- Add unity3d.com to your safe senders list. If your provider uses link protection or rewrite, view the original link if possible, or open the message via the provider’s webmail and click directly.
If you requested verification emails repeatedly, wait 24–48 hours before requesting another.
If none of these resolves it, contact the Customer Experience team.