Why Microsoft Verification Codes Are Sent by InfoUpdate
Question details
The user is receiving Microsoft 365 verification codes via text or email from a sender named 'InfoUpdate' instead of 'Microsoft' and wants to know if this is legitimate.
- Product
- Microsoft 365
- Device & OS
- not provided
- Scenario
- Receiving a multi-factor authentication (MFA) or login verification code to access a Microsoft account.
- Observed behavior
- The sender name for the security code appears as 'InfoUpdate' rather than the standard Microsoft caller ID, causing concerns about phishing or account security.
Never share your verification codes publicly or with anyone asking for them. Always ensure you actively triggered the verification request before attempting to use any code.
Verify and Report the Sender Securely
Use this method to safely investigate whether an unexpected sender like 'InfoUpdate' is a legitimate Microsoft routing partner or a phishing attempt.
In some regions or through certain network carriers, Microsoft may use third-party SMS gateways (like InfoUpdate) to deliver verification codes. For email, legitimate messages may also appear as 'Microsoft on behalf of your organization'. However, you should independently verify the sender's headers if you are suspicious.
If you received the verification code without trying to log in, ignore it. Someone may be trying to access your account.
If the code arrived via email in Outlook, double-click the message to open it. Select the 'File' tab, then click 'Properties'. Copy the text found in the 'Internet headers' box at the bottom of the window.
Open a private support request through your Microsoft 365 admin center or official support channel. Provide the screenshot of the message, the extracted headers, your verification method details, and your subscription info so they can investigate the 'InfoUpdate' sender.
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Frequently Asked Questions
Is a verification code from InfoUpdate safe to use?
It can be safe if you actively requested the code, as Microsoft occasionally uses third-party routing services or regional SMS gateways. However, if you did not request a login code, do not use it and ignore the message.
Why does my verification email say 'Microsoft on behalf of my organization'?
This happens when your Microsoft 365 tenant is configured to route security and verification emails through your enterprise's custom domain, ensuring the email aligns with your company's branding and security policies.
How can I stop getting verification codes I didn't request?
If you are constantly receiving unprompted verification codes, someone may know your password and is triggering the MFA prompt. You should immediately change your Microsoft account password and review your recent sign-in activity.
