This article describes a temporary workaround for an active Microsoft issue that affects a small number of users. The problem is on Microsoft's side, not a Velixo issue.
Verified as of July 10, 2026. Confirm the current status with Velixo support, as Microsoft may resolve the issue at any time.
The suggested workaround for this issue requires a Microsoft 365 licensing change. This adds cost to the affected user's Microsoft subscription and is not a fix recommended by Microsoft.
Contact Velixo support before making any licensing changes.
Symptoms
The Velixo NX add-in cannot be installed or loaded from the Microsoft Office Store (also called AppSource). This is a problem with the add-in store itself, not with Velixo. Two symptoms are currently reported:
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The add-in store does not load: it shows a long loading spinner, and searching for Velixo NX returns "We didn't find any matches." Other add-ins, not only Velixo NX, can be affected in the same way, as the issue lies with the add-in store.
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For add-ins deployed centrally by an administrator through the Microsoft 365 admin center, Excel reports a deployment error: "We are unable to initiate the deployment. To deploy the app, go to the website where it is hosted."
The behavior occurs in both Excel for Windows (desktop) and Excel on the web.
Other errors, such as an add-in that fails to load, are not specific to this issue and may have a completely different cause. Only the two symptoms above reliably indicate this problem.
Cause
The issue stems from a change to the add-in store architecture on Microsoft's side. It is not caused by Velixo or by a Velixo update. The same failures affect add-ins from Microsoft and other vendors, and both centrally deployed add-ins and add-ins installed from the add-in store are impacted. The failure appears to depend on the affected user's Microsoft 365 license type. Microsoft has not yet confirmed a full and final fix. Velixo is tracking the issue and will update this article when Microsoft resolves it.
Workaround
Affected customers have resolved the problem by changing the affected user's Microsoft 365 licensing. Either of the following can resolve the issue:
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Assign the affected user a Microsoft Teams license.
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Upgrade the affected user from Microsoft 365 Apps for Business to Microsoft 365 Business Premium.
To apply the workaround:
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Ask your administrator to assign you a Microsoft Teams license, or upgrade you to Microsoft 365 Business Premium, through the Microsoft 365 admin center.
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Restart Excel, then open the add-in store again. Velixo NX now appears and can be installed.
While you arrange the licensing change, you can continue working with Velixo Classic, which installs outside the Microsoft Office Store and is unaffected by this issue.