Updated: December 18, 2025
Error：Failed to register users
When trying to add a new user in GA4, you may encounter the following error: “Failed to register users” as shown in the screenshot below:
Reason
Temporary Google/GA4 Issue, Occasionally, this error can occur due to a temporary server or UI issue in GA4
Solution
- Refresh the page or try a different browser.
- Clear cache/cookies or use an incognito window.
- Try again after a few minutes.