Cannot Connect to ExchangeOnline, to Update Individual Mailbox RulesQuota

Exchange Gurus -
Totally lost here. Recently, I switched to 'New Outlook' on my Windows 11 desktop. I tried to update Inbox Rules for an existing Inbox Filter. After trying to Save the additional condition, I get an error message stating Unable to Update Rules, Try again later. Doing a search in MS KB, it appears I need to update RulesQuota using command:
Set-Mailbox -Identity dbxxxx@msn.com -RulesQuota 256k (since default in KB is 64K)

Now the rabbit hole starts...
I was able to do the following based on this forum's docs (PS is elevated as Admin):
C:\Program Files\PowerShell\7> Install-Module -Name PSWSMan
C:\Program Files\PowerShell\7> Set-ExecutionPolicy RemoteSigned
C:\Program Files\PowerShell\7> Install-Module -Name ExchangeOnlineManagement
C:\Program Files\PowerShell\7> Get-InstalledModule ExchangeOnlineManagement | Format-List Name,Version,InstalledLocation
which returns:
Name              : ExchangeOnlineManagement
Version : 3.5.0
InstalledLocation : C:\Users\xxxxx\OneDrive\xxxxx Cloud\Documents Cloud\PowerShell\Modules\ExchangeOnlineManagement\3.5.0

Then I tried to connect to the Exchange Online using:
C:\Program Files\PowerShell\7> Connect-ExchangeOnline

This errors out trying to sign in with my Live Account: (see attached screenshot)

I have no clue where to go from here and appreciate any help available!

Thanks,

Dale Barnes.