I can't add my card details in Azure sign-up

Use the following checks and steps, based only on supported Azure sign-up behavior:

1. Verify card type and eligibility
   • Virtual or prepaid cards are not accepted for Azure subscriptions. If any of the four cards are virtual or prepaid, they will always fail.
   • The card must be valid for the country/region selected in the About you step. If the card is issued in a different country/region than the one selected, it can be rejected.
2. Check country/region and billing address
   • In step 1 (About you), ensure the country/region matches the country/region of the card issuer.
   • The billing address entered for the card must match the address on file with the bank (street, city, postal code, etc.).
   • If the billing address format is sensitive (for example, postal code with/without spaces), try both variants as suggested in the Microsoft account payment method guidance.
3. Validate card details exactly
   • Confirm the following match the card and bank records exactly:
     • Card number
     • Expiration date
     • Name on card
     • CVV/CVC code
   • Any mismatch can cause the generic “check details or try another card” error.
4. Confirm the card is active and allowed for online/international payments
   • Contact the bank/card issuer to confirm:
     • The card is active and not blocked.
     • Online payments are allowed.
     • International transactions (if applicable) are allowed.
   • Ask the bank if they see declined authorization attempts from Microsoft/Azure and why they are being declined.
5. Try a different browser/session
   • Complete sign-up in a different browser or an InPrivate/Incognito window, as recommended for Azure sign-up issues.
   • Clear cookies/site data for Azure/Microsoft sites and sign in again, then retry the sign-up.
6. If the card is still declined
   • Review the declined-card causes:
     • Card not accepted for the selected country/region.
     • Prepaid/virtual card.
     • Inaccurate or incomplete credit information.
     • Inactive or blocked card.
   • If representing a business and card payment is not possible, consider invoice (wire transfer) payment after the account is created, as described in the declined-card article.
7. If none of the above resolves it
   • There may be an account or sign-up flag that only support can see. Create a billing/support request from the Azure portal (or via the Azure support link) so the billing team can review the sign-up and payment attempts.

References:

• Troubleshoot issues when you sign up for a new account in the Azure portal
• Troubleshoot a declined card
• Manage payment methods for Microsoft business accounts
• Add a new bank or credit card to your Microsoft account