A Microsoft file hosting and synchronization service.
Dear @Thi Quynh Anh Phan,
To better understand the issue, could you please provide a screenshot of the exact "Account Creation Blocked" error message that appears when you try to create or sign in to OneDrive.
Based on similar cases, this message is often related to a security restriction or IP reputation check during the account creation process.
In the meantime, please try the following:
- Use a different internet connection (for example, switch from office Wi‑Fi to a mobile hotspot).
- Disable any VPN or proxy service if one is in use.
- Try signing in using an InPrivate/Incognito browser window.
- Wait 24 hours and try again if there have been multiple recent sign-up attempts
This article Account creation has been blocked explains that if you tried to create a Microsoft account and got a message saying account creation was blocked. You can follow the tips in that article to get around the "Account Creation Blocked" message.
Please feel free to reply below if you have any update. Thank you for your patience and understanding. Hope you having a nice day and really much warm regards to you as well.
Looking forward to your response!