Hybrid Azure AD join needs to be configured to enable Computer1 to be used in Conditional Access Policies. Synchronized users, universal groups and domain local groups can be used in Conditional Access Policies.

Reference:
https://docs.microsoft.com/en-us/troubleshoot/azure/virtual-machines/serial-console-overview

See the solution of this Task below
Explanation:
One possible solution to register SRV1 to sync Azure file shares using the 34646045 Storage Sync Service is to use the Register-AzStorageSyncServer cmdlet from the Az.StorageSync module. This cmdlet establishes a trust relationship between the server and the Storage Sync Service, which is required for creating server endpoints and syncing files. Here are the steps to register SRV1 using the cmdlet:
On SRV1, open PowerShell as an administrator and run the following command to install the Az.StorageSync module if it is not already installed:
Install-Module -Name Az.StorageSync
Run the following command to import the Az.StorageSync module:
Import-Module -Name Az.StorageSync
Run the following command to sign in to your Azure account and select the subscription that contains the 34646045 Storage Sync Service:
Connect-AzAccount
Select-AzSubscription -SubscriptionId <your-subscription-id>
Run the following command to register SRV1 with the 34646045 Storage Sync Service. You need to specify the resource group name and the Storage Sync Service name as parameters:
Register-AzStorageSyncServer -ResourceGroupName <your-resource-group-name> -StorageSyncServiceName 34646045 Wait for the registration to complete. You can verify the registration status by checking the Registered servers tab on the Azure portal or by running the following command:
Get-AzStorageSyncServer -ResourceGroupName <your-resource-group-name> -StorageSyncServiceName 34646045 Now, SRV1 is registered with the 34646045 Storage Sync Service and ready to sync Azure file shares. You can create server endpoints on SRV1 and cloud endpoints on the Azure file shares to define the sync topology.

Reference:
https://docs.microsoft.com/en-us/virtualization/windowscontainers/container-networking/network-drivers-topologies