I download the Data streamer from your link, I get the same error after I run "setup.exe". The related log shows "Error: An error occurred trying to download 'https://educationworkshop.azurewebsites.net/datastreamer/Microsoft%20Data%20Streamer%20for%20Excel.vsto'."
The URL seems to be unavailable.
As this issue is more about "Data streamer", I would suggest you open a Support Ticket for assistance. As issues with "office-excel-itpro" focus on general issues with Excel.
Thanks for your understanding.
The following is my reserch, if needed, you may have a look.
What version of Office do you have?
- If you are a Microsoft 365 subscriber, make sure you have the latest version of Office, Data Streamer is available for free to all Microsoft 365 subscribers.
To enable this add-in on Excel for Microsoft 365, please refer to the article "Enable Data Streamer in Excel". - If you are not a Microsoft 365 subscriber, please make sure, you have the Office 2016 desktop apps. More information, please refer to "Downloading Data-Streamer".
- Bessides, according to the article above, I seach "Data Streamer" on Microsoft Garage, and find a UWP "Vernier Data Streamer", please read its Description to check whether it is helpful.
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