The Set-UnifiedGroup cmdlet was unavailable after updating several devices to ExchangeOnlineManagement Powershell module 2.0.6 recently. I got the same results on these three machines:
- Windows 10 Enterprise, on-prem domain-joined
- Windows Server 2019 Standard, on-prem domain-joined
- Windows 11 Enterprise, Azure-joined
I tried with two different users, one had the Global Administrator role and one had the Exchange Administrator role.
After uninstalling 2.0.6 and reinstalling 2.0.5, the Set-UnifiedGroup cmdlet was available again on all machines for both users. Microsoft support had no explanation, but recommended staying with 2.0.5 for now.