Excel Add-in not working for one user

Dear Users:

I had just one user who was not able to get their instance of Excel Add-in 8.4 for various workbooks.

However, if the very same workbook was emailed or shared with another users it worked just fine.  The main issue is that the user could not "REFRESH" the sheet.

Eventually, the Excel add-in started to work.  Has anyone experienced this in the past?  What was the solution?

This is the error message:

Description: Object reference not set to an instance of an object.

Error Time: 1/17/2025 5:49:51 PM

Error Level: Error

Tier: AppServer

User: xxxxxx

Application: OneStream_Prod

App Server: vmPRD1int000001

App Server Version: 8.4.0.16413

App Server OS Version: Microsoft Windows NT