Dear @Tung Ho,
Thank you for posting your question in the Microsoft Q&A forum.
According to your description, I understand that you just start the Office 365 E3 (no Teams) trial but you cannot select the Country/Region. Before giving you the best solution, could you please confirm these questions below to help me diagnose the issue more effectively:
- Are you trying to add the trial to an existing tenant (already have a Microsoft 365 org), or are you creating a brand‑new tenant and want to choose the country at sign‑up?
- Also, which country do you want to select?
- Are you signed in with a work account or a personal Microsoft account during sign‑up?
- Are you using any VPN or proxy that might change your IP location?
- Do you get an error message?
- If possible, please kindly share the screenshot to me for better assist
Firstly, when you’re signed in with a work account that already has a Microsoft 365 tenant, the sign‑up flow locks the Country/Region to the tenant’s immutable geolocation. You’ll see the field greyed out or prefilled. To change the country, you would have to create a new tenant (a separate organization) with a different, newly created admin account.
Secondly, if you are using a personal (MSA) identity in an enterprise trial flow frequently leads to stuck or hidden fields, account mismatch banners, or loops.
If you create a brand-new tenant, please help to confirm whether you sign up for E3 trial in this Website. And you can refer to the following suggestions:
- Sign out of all Microsoft sites in the browser.
- Try a different domain name (tenant).
- Use Private Browsing Mode.
- Turn off VPN / corporate proxy temporarily
- Try signing up in a different network.
- Sign out from all Microsoft sessions in the browser
- Then sign in with the work account you actually want to use for the trial.
- If you intend to create a new tenant (and pick the country), click “Create a new account/organization” instead of using an existing work account.
- If you need a different country than your current tenant’s
- You cannot change a tenant’s Country/Region after creation.
- Create a separate new tenant and choose the desired country during sign‑up (that’s the only moment you can set it).
- Moreover, you may try Office 365 Enterprise E5 to see if it works well.
If you already have a tenant, go to Billing > Purchase services, search “Office 365 E3 (no Teams)”, and start the 1‑month trial from there. Once the tenant is created, Country/Region is immutable.
Note**:** In either case, you can't purchase a subscription for your new region until the existing subscription is gone. For reference: Change your country or region
As moderators, our primary goal is to provide helpful guidance and support through general troubleshooting steps. While we don’t have access to internal systems or administrative tools required to resolve account-specific or backend issues, we truly appreciate your understanding of these limitations. We genuinely hope the information we share helps guide you in the right direction, and we're always here to assist as much as we can within our scope.
I hope this information is helpful. Please follow these steps and let me know if it works for you. If not, we can work together to resolve this. If I misunderstand anything, please feel free to reach out.
Please understand that our initial response does not always resolve the issue immediately. However, with your help and more detailed information, we can work together to find a solution.
Thank you for your patience and your understanding. If you have any questions, please feel free to reach out.
I'm looking forward for your reply.
If the answer is helpful, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment".
Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.
