Cant't install offline extension

pbergergeoblue  about the error: Unable to connect to the remote server i already opened a case to Microsoft.

what i can say is:

- even if WAC internet access is set to No access, it still goes to Internet.

- even if we open internet access to the whitelist URLs for WAC service

the following URLs are not enough

https://nam06.safelinks.protection.outlook.com/?url=https%3A%2F%2Fmanagement.azure.com%2F&data=02%7C01%7Ca-adluta%40microsoft.com%7C0c944d9316e7461d0de208d86510621d%7C72f988bf86f141af91ab2d7cd011db47%7C1%7C0%7C637370468368737877&sdata=w4ax%2BGAfh8i2k%2FYrcO0Nc0hAUc%2Fpkrl0zTb5ABgqGmg%3D&reserved=0

https://nam06.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgraph.microsoft.com%2F&data=02%7C01%7Ca-adluta%40microsoft.com%7C0c944d9316e7461d0de208d86510621d%7C72f988bf86f141af91ab2d7cd011db47%7C1%7C0%7C637370468368737877&sdata=x20jLlJcr966OdJxeDMyMGbTSsDSFKZfiK3BjQ74cJk%3D&reserved=0

https://nam06.safelinks.protection.outlook.com/?url=https%3A%2F%2Flogin.microsoftonline.com%2F&data=02%7C01%7Ca-adluta%40microsoft.com%7C0c944d9316e7461d0de208d86510621d%7C72f988bf86f141af91ab2d7cd011db47%7C1%7C0%7C637370468368747870&sdata=s3NQHiWRwc%2FYVnX1C8p%2BvV8fSghvykb91dcieg8ffyo%3D&reserved=0

https://nam06.safelinks.protection.outlook.com/?url=https%3A%2F%2Fpkgs.dev.azure.com%2F&data=02%7C01%7Ca-adluta%40microsoft.com%7C0c944d9316e7461d0de208d86510621d%7C72f988bf86f141af91ab2d7cd011db47%7C1%7C0%7C637370468368747870&sdata=2%2FDAU3faxsOkOWgHUaIdBPqKI7Qbk9ZzI0GdOdSboyc%3D&reserved=0

https://nam06.safelinks.protection.outlook.com/?url=https%3A%2F%2Faka.ms%2Fsme-extension-feed&data=02%7C01%7Ca-adluta%40microsoft.com%7C0c944d9316e7461d0de208d86510621d%7C72f988bf86f141af91ab2d7cd011db47%7C1%7C0%7C637370468368757864&sdata=NqiEyx43jeTWb7xG2U%2FmjUq6OWD%2Bba7Hgqtbq5MfW3w%3D&reserved=0

as it seems it goes to the following URLs as well

*. blob.core.windows.net

*. store.core.windows.net

anyway if you open the access to all  Microsoft Public IP address blocks  https://www.microsoft.com/en-us/download/details.aspx?id=53602 

it works...

I'm still waiting an official answer about the full/complete/right list of URLs to be whitelisted... if the server has no direct internet access...