Error itgenlic402 when trying to connect from Excel add-in

[t6d6]

Hello, I previously defined some Excel links which were working fine. Now, however, I am receiving these error messages below. We already have a subscription:

itgenlic402
Invantive Control for Excel can not be used due to the previously shown message.
Warning itgenlic402:
This data container has been uesd in a trial that started 156 days ago.
Please switch to a non-trial subscription within 6 months after first use.
This is currently a warning only.
Connection to this data container will no longer be possible starting 07-05-2026.

itgenuty726
A connection to the database … could not be established as user …
Provide value on ‘System.Windows.Markup.StaticResourceHolder’ threw an exception.
The method or operation is not implemented.

I tried again, and now also get this message:

itgeneor823
A connection to the database … could not be established as user …
The OAuth access token for Exact Online has expired or is currently not accepted.
The access token has expired.
The remote server returned an error:
(401) Unauthorized.
Please check that Exact Online is online.
Try again later when Exact Online is offline.
Re-authenticate on Exact Online when online and the access token is still not accepted.
https://start.exactonline.nl/api/v1/current/Me

Can someone advise what I should do?

[forums]

It is recommended to click on the hyperlink in the first error window directly below “Related forums topics:”. This will lead to the topic:

Itgenlic402 Your trial will end on ... for this device. Please acquire a subscription or switch to a free product

Invantive on-premises products may display an error such as: itgenlic402 Your trial will end on … for this device. Please acquire a subscription or switch to a free product. [itgenlic402] This message indicates that the currently active license key will expire in a number of days. You can either switch to a free product or key, or acquire a subscription. To acquire a subscription contact Invantive Sales on +31 88 00 26 599 or sales@invantive.com. For Invantive Query Tool the free licen…

The next step is to replace the trial license key by the license key for your company. The related topic explains how to do this.

[forums]

This question was automatically closed after at least 1 week of inactivity after a possible solution was provided. The last answer given has been marked as a solution.

Please ask a new question via a separate topic if the problem occurs again. Please include a link to this topic in the new question by pasting its URL into the text.