Phone number did not pass security checks microsoft

* * Mod note added on 10 Jan 2024...

Brought here by a search? Sorry but the only two possible solutions in the thread (worked for 2 people) are on page 9.

I'm trying to create a E5 Subscription but when I get to phone verification step, I get an error while trying to send the code to my phone number:

We can't continue with the signup process for the following reason:

• Your phone number did not pass security checks.

I've been using this phone number for over 10 years.