Which version of Office 2019 are you installing?
Do you install Office 2019 form Services & Subscriptions?
Or do you install it via running ODT with configuration file?
Besides, is there Visio or Project installed on your PC currently?
If yes, could you please let us know its version?
Please make sure your PC could access Microsoft CDN via your internet.
If conditions permit, you can change the network, such as using a mobile phone hotspot.
You can also temporarily disable the security software to prevent it from blocking installation.
Looking forward for your response, thank you.
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