Purchasing PDF X

Sign in to the Microsoft Store app with your personal Microsoft account first, then reopen PDF X and retry the purchase using that same Store account.

Sign in and retry the purchase

1. Close PDF X.
2. Open Microsoft Store from the Start menu.
3. Select the Profile icon near the search box.
4. Sign out if a different or obsolete account appears, then sign in with the personal Microsoft account you want associated with the purchase.
5. Reopen PDF X and select Purchase again.

Microsoft Store in-app purchases generally use the Store checkout process and the payment method associated with the signed-in Microsoft account. Some apps instead manage purchases outside Microsoft Store. ^1^

If Store sign-in succeeds but PDF X asks for the password again

On a trusted PC that is not shared with other people, enable Purchase sign-in:

• Windows 11: Microsoft Store → Profile → App settings → Purchase sign-in → turn it On.
• Windows 10: Microsoft Store → See more (…) → Settings → Purchase sign-in → turn it On.

Then close and reopen PDF X and retry. This can skip password entry for eligible in-app purchases, but it permits purchases without entering the password again on that device. ^2^

If Microsoft Store itself will not accept the account

Test the same personal account through the Microsoft account sign-in page. If browser sign-in also fails, use Microsoft’s guided account sign-in tool rather than repeatedly entering the password. ^3^

If browser sign-in works but Store sign-in does not:

1. Update Microsoft Store
   • Windows 11: Microsoft Store → Library → Get updates.
   • Windows 10: Microsoft Store → See more (…) → Downloads and updates → Get updates.
2. Reset the Store cache
   • Press Windows key + R.
   • Enter wsreset.exe and select OK.
   • Wait for the blank window to close and Microsoft Store to reopen automatically.
3. Sign in to Microsoft Store again, then retry from PDF X. Microsoft documents Store updates and app repair/reset as supported troubleshooting steps. ^4^ ^5^

If the prompt still fails only inside PDF X

Repair PDF X without deleting its data first:

• Windows 11: Settings → Apps → Installed apps → PDF X → More (…) → Advanced options → Repair.
• Windows 10: Settings → Apps → Apps & features → PDF X → Advanced options → Repair.

Use Repair only if it is available. If it is unavailable or does not resolve the issue, Reset is the next option, but it can remove the app’s local settings and data. ^6^

If Store sign-in works and other Store purchases work, but PDF X alone still rejects the credentials, its checkout may be managed by the publisher rather than Microsoft Store. Contact PDF X publisher support from the app’s Microsoft Store listing. For a Microsoft Store purchase or account problem, use Contact Microsoft Support, enter the issue, select Get Help, and then Contact Support if needed. ^7^

References

1. [Windows 11](https://support.microsoft.com/accounts-billing/make-an-in-app-purchase-in-microsoft-store)
2. [Windows 11](https://support.microsoft.com/accounts-billing/change-purchase-sign-in-settings-for-microsoft-store-on-windows)
3. Get help with your Microsoft account
4. [Windows 10](https://support.microsoft.com/accounts-billing/fix-problems-with-apps-from-microsoft-store)
5. I can't find or install an app from Microsoft Store | Microsoft Support
6. Repair apps and programs in Windows
7. [Windows 10](https://support.microsoft.com/accounts-billing/prevent-unauthorized-purchases-from-microsoft-store#need-more-help)