Hi,
If you use IE, please clear the cache and cookies to try again.
Or we can try this in another browser to check if this makes a difference.
If possible, please try to download the software in another network environment, check if this can help.
Regards,
Melon Chen
TechNet Community Support
It's recommended to download and install
Configuration Analyzer Tool (OffCAT), which is developed by Microsoft Support teams. Once the tool is installed, you can run it at any time to scan for hundreds of known issues in Office
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