I have the following issue after my code has been working without issues for a long time in production. Nothing new has been installed lately.

After successfully connecting to Exchange Online using PowerShell and trying to get the SecOpsOverridePolicy.

Get-SecOpsOverridePolicy -Identity "SecOpsOverridePolicy"

I get the following error.

Get-SecOpsOverridePolicy: The term 'Get-SecOpsOverridePolicy' is not recognized as a name of a cmdlet, function, script file, or executable program.
Check the spelling of the name, or if a path was included, verify that the path is correct and try again.

I connect to the system using (as admin) as follows

$connData = @{
            ConnectionUri = "https://ps.compliance.protection.outlook.com/PowerShell-LiveId"
            AzureADAuthorizationEndpointUri = "https://login.microsoftonline.com/organizations"
            AccessToken = "SECRET123"
            Organization = "myorg.onmicrosoft.com"
        }

Connect-ExchangeOnline @connData 

What puzzles me is that I can see that ExchangeOnlineManagement (tried both version 3.4.0 and 3.5.0) doesn’t include the cmdlet above

 Get-Command -Module ExchangeOnlineManagement      

CommandType     Name                                               Version    Source
-----------     ----                                               -------    ------
Function        Connect-ExchangeOnline                             3.5.0      ExchangeOnlineManagement
Function        Connect-IPPSSession                                3.5.0      ExchangeOnlineManagement
Function        Disconnect-ExchangeOnline                          3.5.0      ExchangeOnlineManagement
Function        Get-WrappedCommand                                 3.5.0      ExchangeOnlineManagement
Function        IsCloudShellEnvironment                            3.5.0      ExchangeOnlineManagement
Function        UpdateImplicitRemotingHandler                      3.5.0      ExchangeOnlineManagement
Cmdlet          Add-VivaModuleFeaturePolicy                        3.5.0      ExchangeOnlineManagement
Cmdlet          Get-ConnectionInformation                          3.5.0      ExchangeOnlineManagement
Cmdlet          Get-DefaultTenantBriefingConfig                    3.5.0      ExchangeOnlineManagement
Cmdlet          Get-DefaultTenantMyAnalyticsFeatureConfig          3.5.0      ExchangeOnlineManagement
Cmdlet          Get-EXOCasMailbox                                  3.5.0      ExchangeOnlineManagement
Cmdlet          Get-EXOMailbox                                     3.5.0      ExchangeOnlineManagement
Cmdlet          Get-EXOMailboxFolderPermission                     3.5.0      ExchangeOnlineManagement
Cmdlet          Get-EXOMailboxFolderStatistics                     3.5.0      ExchangeOnlineManagement
Cmdlet          Get-EXOMailboxPermission                           3.5.0      ExchangeOnlineManagement
Cmdlet          Get-EXOMailboxStatistics                           3.5.0      ExchangeOnlineManagement
Cmdlet          Get-EXOMobileDeviceStatistics                      3.5.0      ExchangeOnlineManagement
Cmdlet          Get-EXORecipient                                   3.5.0      ExchangeOnlineManagement
Cmdlet          Get-EXORecipientPermission                         3.5.0      ExchangeOnlineManagement
Cmdlet          Get-MyAnalyticsFeatureConfig                       3.5.0      ExchangeOnlineManagement
Cmdlet          Get-UserBriefingConfig                             3.5.0      ExchangeOnlineManagement
Cmdlet          Get-VivaFeatureCategory                            3.5.0      ExchangeOnlineManagement
Cmdlet          Get-VivaInsightsSettings                           3.5.0      ExchangeOnlineManagement
Cmdlet          Get-VivaModuleFeature                              3.5.0      ExchangeOnlineManagement
Cmdlet          Get-VivaModuleFeatureEnablement                    3.5.0      ExchangeOnlineManagement
Cmdlet          Get-VivaModuleFeaturePolicy                        3.5.0      ExchangeOnlineManagement
Cmdlet          Remove-VivaModuleFeaturePolicy                     3.5.0      ExchangeOnlineManagement
Cmdlet          Set-DefaultTenantBriefingConfig                    3.5.0      ExchangeOnlineManagement
Cmdlet          Set-DefaultTenantMyAnalyticsFeatureConfig          3.5.0      ExchangeOnlineManagement
Cmdlet          Set-MyAnalyticsFeatureConfig                       3.5.0      ExchangeOnlineManagement
Cmdlet          Set-UserBriefingConfig                             3.5.0      ExchangeOnlineManagement
Cmdlet          Set-VivaInsightsSettings                           3.5.0      ExchangeOnlineManagement
Cmdlet          Update-VivaModuleFeaturePolicy                     3.5.0      ExchangeOnlineManagement

And it doesn’t look like you need to install it specifically so where does this module is coming from?