Error in office 365 hybrid configuration

Hello AleksandrTerekhov,

Based on the error you shared from HCW log, it seems the problem is on Exchange Online side, first I'd like to share with you the command "Enable-OrganizationCustomization" could be only run once in Exchange Online side, it the command was run before, now you cannot run it again. To check if the command was run before, please connect to Exchange Online PowerShell and then run Get-OrganizationConfig | ft Identity,IsDehydrated if the outout of "IsDehydrated" is True this means the command was not run before. If it is already false then you cannot manually run the ‘Enable-OrganizationCustomization" again. For your reference Enable-OrganizationCustomization.

Moreover, for the error you got from HCW above, may I double confirm if this is the first time you run HCW to depoly Exchnage Hybrid or you want to re-run it to apply changes to Hybrid configuration? Also please share with information as below for further troubleshooting

1, the outcome of Get-OrganizationConfig | ft Identity,IsDehydrated, please collect a screenshot.

2, is it the first time to deploy Exchange Hybrid with HCW then got the error?

3, Please share the latest HCW log with me.

To protect your privacy, I will send you a Private Message (PM) to collect the generated information there, thanks.

Best Regards,

Oliver

Thanks a lot

Hello AleksandrTerekhov,

Thanks for your reply with patience.

After checking the HCW log you shared in PM, and I found the error above under Exchange Online section, and also based on the powershell result you tried above with the same error. As far as I know the issue is on Exchange Online side, and based on the first command above, the output is True, this means “Enable-OrganizationCustomization" should be never run in the Microsoft 365 tenant. In this case you would need to contact the Microsoft 365 backend team to further check the issue with "Enable-OrganizationCustomization", So it is recommended please open a support ticket via Microsoft 365 Admin Center > Support > New service request and then deliver the generated information there to Microsoft 365 team for further analysis. By the way, please provide the powershell results we talked above to Microsoft 365 team too, thanks.

Please also feel free to share with me if you got any further updates there, thanks.

Thanks for your understanding and patience,

Oliver

Hello

I will write my actions so that you can make sure that my actions are correct. I started powershell as administrator and ran the following commands

1.Set-ExecutionPolicy RemoteSigned

2.Install-Module PowershellGet -Force

3.Install-Module -Name ExchangeOnlineManagement

4.Connect-ExchangeOnline -UserPrincipalName *** Email address is removed for privacy *** (Global Administrator Azure) 5.Logged in with password

6.Get-OrganizationConfig | ft Identity,IsDehydrated

Result:

PS C:\Windows\system32> Get-OrganizationConfig | ft Identity,IsDehydrated

Identity IsDehydrated

mydomain.onmicrosoft.com True

After that I give the command Enable-OrganizationCustomization and i get an error

WARNING: An unexpected error has occurred and a Watson dump is being generated: Value cannot be null.

Parameter name: rootOrgId

Value cannot be null.

Parameter name: rootOrgId

+ CategoryInfo          : NotSpecified: (:) [Enable-OrganizationCustomization], ArgumentNullException 

+ FullyQualifiedErrorId : System.ArgumentNullException,Microsoft.Exchange.Management.Deployment.EnableOrganization 

CustomizationTask

+ PSComputerName        : outlook.office365.com

Perhaps my actions are in the wrong order?

Answer to the second question

I am syncing for the first time, the company was previously banned from using cloud resources

Answer to the third question sent to personal