How to unblock my student's account ?

Question

How to unblock my student's account ?

Dinh Quan Le 0

Hello,

I am helping students to submit application to universities, and I often create Outlook emails for my students. Recently, some of accounts are blocked and I really don't know why. These emails are used to receive information from Universities, such as admission offers and interview schedules. It's worse that the new account was created successfully and registered to the university, but today we cannot log in to receive an offer from the University. We follow all required instructions to unblock it, except the information about the sent email because there is no sending out email. Kindly help to instruct us the other way to unblock this account. Thank you

Dinh Quan Le 0 Reputation points

2026-06-12T05:23:09.2833333+00:00

AI bot replied:

Outlook.com accounts can be temporarily blocked when unusual or risky activity is detected, even if the account is new and has not sent any email yet. To unblock a student’s Outlook.com account, use only the official self-service flows; there is no manual override.

Could you tell me how the new created email (no sending out email, received just 1 welcome email from Microsoft and Outlook) can be detected unusual or risky activity by Outlook.com. I want to know to avoid the same issue for other account. Thank you

3 answers

Your answer

Dinh Quan Le 0 Reputation points

2026-06-12T05:23:09.2833333+00:00

AI bot replied:

Outlook.com accounts can be temporarily blocked when unusual or risky activity is detected, even if the account is new and has not sent any email yet. To unblock a student’s Outlook.com account, use only the official self-service flows; there is no manual override.

Could you tell me how the new created email (no sending out email, received just 1 welcome email from Microsoft and Outlook) can be detected unusual or risky activity by Outlook.com. I want to know to avoid the same issue for other account. Thank you

Answer 1

Darren-Ng 11,275 Microsoft External Staff Moderator

Dear @Dinh Quan Le,

Thank you for posting your question in the Microsoft Q&A forum.

Based on your description, multiple newly created Outlook accounts for students are getting blocked, and you cannot complete the verification because there is no sent email history. You wonder how to unblock these accounts

To better understand and narrow down the issue, could you please confirm the following:

What exact message do you see when trying to sign in?

Could you please clarify how these accounts were registered with the university?

Also, what is the domain of these accounts (e.g., hotmail.com, outlook.com, etc.)?

Please understand that the more information you provide, the more effectively I can support.

Looking forward to your update.

Darren-Ng 11,275 Reputation points Microsoft External Staff Moderator

2026-06-12T05:49:02.4+00:00

Hello,

Even if the account is newly created and has not sent any emails, it can still be flagged as unusual or risky activity by Outlook.com. This is because Microsoft’s security system does not rely only on email activity to evaluate risk.

There are some reasons make your account can be detected unusual or risky activity as:

Account creation patterns: Creating multiple accounts within a short time or from the same device/network may be flagged as automated or suspicious behavior

Sign‑in behavior: Logging in from different locations, IP addresses, or devices shortly after account creation Lack of typical usage: New accounts with very limited activity (e.g., only receiving emails and no normal interaction) may be considered abnormal

Missing recovery information: Accounts without a linked phone number or alternate email are harder to verify and may be flagged

Shared environment signals: If many accounts are created or accessed from the same environment, the system may treat them as related and apply additional checks

Because of these factors, an account does not need to send emails to be detected as potentially risky.
Dinh Quan Le 0 Reputation points

2026-06-12T05:54:44.3433333+00:00

Hello Darren,

What exact message do you see when trying to sign in?



It said the account is blocked due to unusual or risky activity is detected.



Could you please clarify how these accounts were registered with the university?

I put the email to the university's system when I fill in form for applying to university.



what is the domain of these accounts (e.g., hotmail.com, outlook.com, etc.)?

It is outlook.com
Dinh Quan Le 0 Reputation points

2026-06-12T07:18:01.72+00:00

Hi Darren,

Thank you for your details answer. This policy is really frustrating for me. I have to keep creating new email accounts just to get university updates and remind my students about deadlines. I think Microsoft should look at how people actually use their accounts before deciding to block them. My students after entering the university, they still keep using outlook email for years. Could you show me how to solve this problem?
Darren-Ng 11,275 Reputation points Microsoft External Staff Moderator

2026-06-14T07:17:59.4766667+00:00
Hello,

Thank you for your update,

it appears that the student account is currently blocked or experiencing access issues.

If the student is using a personal Microsoft account, these accounts may sometimes be flagged due to security checks or unusual activity.

For better stability and long-term access, I recommend using the official education account provided by the university, as:

It is managed by the institution’s IT team

It typically has fewer disruptions related to security verification

The university can assist directly if access issues occur

If the student still needs to recover the current account, they can try the account recovery process or contact Microsoft Support. However, using the university-provided account is generally the more reliable option for academic purposes.
Darren-Ng 11,275 Reputation points Microsoft External Staff Moderator

2026-06-14T07:24:47.5+00:00

Hi,

I understand how frustrating this experience can be.

Microsoft applies automated security protections to personal accounts to prevent spam or suspicious activity. When multiple accounts are created or used for sending repeated or bulk messages, the system may temporarily block them, even if the intent is legitimate. In addition, many universities implement their own email security policies to protect students from spam or phishing. Emails sent from external personal accounts may be filtered, limited, or blocked Verified university accounts are considered more trusted within the academic system.

For better stability and to avoid repeated blocks, I strongly recommend using official education accounts provided by the university

Answer 2

Outlook.com accounts can be temporarily blocked when unusual or risky activity is detected, even if the account is new and has not sent any email yet. To unblock a student’s Outlook.com account, use only the official self-service flows; there is no manual override.

Follow these steps for each blocked student account:

Go to the Sign-in Helper
- From a browser, open the Sign-in Helper: Sign-in Helper.
- Sign in with the blocked Outlook.com address.
- Complete the steps shown (enter the security code, confirm identity, and change the password if prompted).
If the account still cannot be unblocked
- If entering the security code or changing the password does not unblock the account, follow the guidance in When you can't sign in to your Microsoft account (linked from the unblock article). This flow helps reset the password and, if needed, provides a way to contact support.
If sign-in attempts are rate-limited or blocked
- If messages such as “Try another verification method” or similar appear, this can be due to:
  - Unusual activity
  - High volume of requests
  - Possible Terms of Service violations
- To resolve:
  1. Try another verification method associated with the account (for example, alternate email instead of SMS, or vice versa).
  2. Try another network (switch between Wi‑Fi and mobile data, or use a different Wi‑Fi network).
  3. Wait: Avoid repeated attempts. Wait at least 24 hours (up to several days if needed) before trying again, as repeated attempts can reset the lockout timer.
  4. Use the sign-in helper again after the waiting period.
If “Next” does not appear or the account is locked due to suspicious activity
- If there is no Next option when signing in and a message indicates the account is locked due to suspicious activity or Terms of Use issues:
  - Use the aka.ms/ link shown in the sign-in window to open the account reinstatement form.
  - Submit the requested information once. A Microsoft Online Safety agent reviews the request and responds by email.
  - Do not submit multiple forms, as this can delay processing.
General guidance for multiple student accounts
- Each Outlook.com account is evaluated individually for unusual activity. Creating many accounts or accessing them from the same device/network in a short time can appear suspicious.
- To reduce blocks:
  - Ensure each student controls and uses their own account.
  - Avoid rapid, repeated sign-ins and password resets across many accounts from the same device or IP.

If an account is blocked and the self-service unblocking, sign-in helper, and reinstatement form do not restore access, the account remains protected by automated systems and must pass those checks before it can be used again.

References:

Answer 3

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How to unblock my student's account ?

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