Why is my colleague having trouble signing up to QuickBooks online using an invitation from the admin. He is getting the error 25625 ?

I appreciate your efforts in troubleshooting the invitation issue to resolve the error code 25625, Keshav.

Another resolution to fix the error code is to use a different device (PC, phone, or tablet). Additionally, we can contact your QBO administrator to delete the original invitation and send a new one.

If issues persist, we can reach out to QuickBooks Phone Support to escalate the issues with the user invitation, regional conflicts, or other technical problems that are not visible from your end, and provide reasons why you get this error code.

Here's how you can connect with them:

1. In your QuickBooks Online account.
2. Click the (?) Help and choose the Search tab.
3. In the search field, enter the contact support.
4. Click the Contact Us button.
5. Choose Have us call you in the Callback section.
6. Follow the on-screen steps to proceed.

For information on the support hours of our QuickBooks Online (QBO) Live Support team, please refer to this article: Get help with QuickBooks products and services.

The Community Space is always available to provide additional support for your concerns.