Problems by connecting UPS with Shipping Manager (QB Desktop Enterprise)

I appreciate the effort you've made in attempting to resolve this issue, Markus, like trying with a second account and providing a screenshot. I'd be glad to guide you on where to find the best help available to successfully integrate UPS in your QuickBooks Desktop (QBDT).

Since you have verified that the account's postal code and account number are accurate, I recommend contacting UPS customer support for specialized assistance. They are well-equipped to provide comprehensive guidance and help troubleshoot the error message you're encountering, ensuring the seamless integration of UPS within the system.

Moreover, for additional information on the steps and frequently asked questions about UPS, please feel free to explore this article: Intuit QuickBooks Shipping Manager.

If you need additional assistance or have further questions about the integration process, please don't hesitate to get in touch. The Community space is always here to provide you with guidance and help resolving any issues you might encounter every step of the way.

UPS states that QB is using an outdated version of Ship Rush and that QB needs to update it.

We are currently in the process of switching providers for our shipping functionality, @TheSound. I'll explain more information below.
 

The reason why you are seeing this error because UPS no longer supports the Shipping Manager software currently in QuickBooks. As a result of this switch, we will have a new system for managing shipping, called the Shipping Manager, which will be available starting in May. If you have not set up shipping with your carrier yet, you will not be able to do so until the new system is launched in May. You might also start seeing pop-up messages in QuickBooks about this upcoming change.
 

For more details about the new and improved shipping experience in QuickBooks Desktop, refer to this article: Get ready for a new shipping experience in QuickBooks Desktop.
 

For now, if you need to generate shipping labels, we recommend doing so directly through the UPS website.

Additionally, consider updating your QuickBooks Desktop to the most recent version in order to access the latest features and product enhancements.

Let me know in this thread if you have any questions about the shipping manager in QuickBooks Desktop. I am here to provide assistance and address your concerns effectively.