Microsoft Verification Code Not Arriving? Here’s What Might Be Wrong
Key takeaways
If Microsoft says it cannot send an SMS, waiting for the message will not help. Start with the error on screen.
Repeated requests can trigger a block on sending codes. Avoid tapping “Send again” over and over.
The code may be going to an old number or ending up in filtered messages.
VoIP numbers are not supported for Microsoft sign-in verification codes. If you are buying a separate number, check its exact type.
Microsoft is gradually moving away from SMS for personal accounts. Your security settings may already offer only other verification methods.
You need to open your email, get a file from OneDrive or sign in to Xbox. Your password is accepted. All that is left is the code, but your phone stays silent. A minute later, you request another SMS, then another. Now you cannot tell whether the messages are delayed or were never sent at all.
Start with the wording in the sign-in window. “Code sent” and “Try another verification method” call for different next steps.
Was the code sent, or did Microsoft refuse to send it?
If you see a code entry field and a message confirming it was sent, check the last few digits of the number, your filtered SMS folder and whether other messages arrive.
If the screen says “We can’t send a text message to this number” or “Try another method,” the problem may be with Microsoft’s verification checks. The service temporarily restricts sending when it detects suspicious activity or too many requests.
For this kind of error, Microsoft suggests using another verification method already linked to the account, switching networks or taking a break. Its help pages say that waiting a day sometimes helps; if nothing changes, the wait may extend to a week. That is not a promise that the block will end at a particular time. Frequent retries can make the wait longer.
Ten requests in a row are more likely to get in the way. After the first few failures, save the error text and stop retrying.
Is the number on screen actually yours?
We get used to automatic sign-in and can go years without opening the security settings. During that time, phones, carriers and sometimes countries change. An old number stays in the account unnoticed until a code needs to be sent to it.
The verification page only shows part of the number. Those last few digits can help you spot the problem.
Resetting your password does not restore access to an old SIM. You can change the password, sign in again and end up facing the same SMS check.
If you no longer have the old number, use another sign-in method you previously added or the Microsoft sign-in helper. Replacing all of your security information can trigger a 30-day restriction period on the account. Do not remove every verification method at once just because an SMS is missing.
Other SMS messages arrive. Why not the code?
A message from a friend shows that your phone can receive SMS. It does not test the entire delivery route used for Microsoft’s code.
Automated messages can be delayed separately. The cause may also be something ordinary: your messaging app moved an unfamiliar sender to spam. Microsoft can also have regional restrictions or temporary SMS unavailability.
Be specific when contacting your carrier: “I’m not receiving a Microsoft verification code. I requested it today at 2:20 p.m., and other messages are arriving.” That gives support more to work with than “Please check my SMS.”
If you are traveling, remember your primary SIM too. Your travel eSIM may be providing internet access while the number receiving the code is switched off or has not connected to a local network. Meanwhile, your browser opens the sign-in page without any trouble.
What if you get another number?
During registration, when Microsoft asks you to enter a number, using a different one may still be an option. When signing in to an existing account, the code goes to saved contact details. A new number cannot receive a message addressed to the old one.
There is also a restriction on number type: Microsoft does not support VoIP numbers for sign-in and verification codes. You need a mobile number. A longer rental or a higher price does not change the number’s type.
Revosim has a Microsoft section. Before ordering, check the number type and whether it is suitable for the verification step you are completing. A service name appearing in the catalog does not override Microsoft’s decision to accept or reject the number.
For work email or a personal account with subscriptions, you also need access to the number after the first code. Registration takes only a short time, but the next sign-in may be months away.
Why is the SMS option missing?
It is not always a page error. Microsoft has announced a gradual move away from SMS for signing in to and recovering personal accounts.
When you add a verification method, a phone number may therefore no longer be listed. Instead, you may see a recovery email, Microsoft Authenticator or a passkey. Repeated requests will not make an SMS option appear in that situation.
If you set up another method earlier, it will appear among the available sign-in options. Simply installing Authenticator on a new phone is not enough: the account must be connected to it.
For a work account, contact your administrator
Company email and personal Outlook accounts may look similar, but their sign-in rules differ.
For work or school accounts, the organization controls the verification methods. If “Sign in another way” is missing or offers no options you can use, Microsoft directs you to your administrator. Buying another number usually just adds an unnecessary step here.
Once you regain access, do not close the security settings straight away. Check your recovery email, add an available second method and remove outdated contact details while you are signed in. That way, changing phones next time does not turn an ordinary morning checking email into a wait for one SMS.