Azure Devops remove Domain User Group privileges - security

We have Azure DevOps 2019 installed in our internal network, but all of Domain users admins(Active Directory) have full access to our collections, How Can I revoke their access?

You can search the Domain Admins. If you find it, click to enter it, you will see the interface like below, then choose the Permissions Tab to set the permission. For example:

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Azure Active Directory + Active Directory

can you guys help me with a question?
I have an ADDS created on Azure and a Windows Server 2019 (Active Directory) virtual machine hosted at Azure either.
I'm having problems to change the attributes and using the logon hours options trought the user's account... "You do not have permission to change the logon hours attribute, your changes won't be saved".
At Windows Server 2019, i have the enterprise admin permission.
At Azure, i have the administrator permition and still having theses issues.
Can someone give me a clue to solve this?
Thanks.
• In Azure ADDS, you will have to add your signing in ID to the Windows Server VM, i.e., the Azure ADDS DC to the Azure AD DC Administrators group in your Azure AD tenant. Once, you have added your user ID in this group, you will be able to configure the ‘logon hours’ attribute in the managed domain joined Windows Server VM.
• Also, though you are the administrator, but it is not clear what permissions you are assigned. As a result, you need to be assigned the ‘Domain Services Contributor’ Azure role for creating the required Azure ADDS resources along with ‘Application Administrator’ and ‘Groups Administrator’ Azure AD roles in your tenant.
Thus, if you ensure that the above changes are done, you will surely be able to change the ‘logon hours’ attribute. Please find the below snapshot for your reference: -
To know more about this, kindly follow the below links: -
https://learn.microsoft.com/en-us/azure/active-directory-domain-services/tutorial-create-management-vm#administrative-tasks-you-can-perform-on-a-managed-domain
https://learn.microsoft.com/en-us/azure/active-directory-domain-services/tutorial-create-instance-advanced#prerequisites

How to create service Account in Azure DevOps?

I am trying to get 7 pace timesheet details along with Azure DevOps work details programmatically using PAT token. I want to use a service account instead of a user account.
Can you please guide me to create a service account?
This service account should have 7 pace applications along with
Azure DevOps access.
The service account MFA should be disabled.
So that it can be used in Azure Runbook.
You must choose a new account that is either a system account or a member of a workgroup or domain that is trusted by every computer in this deployment of Azure DevOps Server.
Then you can have a service account in the two ways :
Use the administration console to change the service account
Open the administration console for Azure DevOps on the server that hosts the application tier.
In the console, expand the server name and select Application Tier.
In the Application Tier pane, select Change Account.
The Update Service Account window opens.
Perform one of the following steps:
To use a system account, select Use a system account, and then select a system account from the drop-down list - If your server is a member of an Active Directory domain, the default choice for the system account to use is Network Service. If your server is a member of a workgroup, the default choice is Local Service. Depending on the details of your deployment, the default choice may be the only available choice.
To use a domain or workgroup account, select Use a user account, enter the name of the account in Account Name, and then enter the password for that account in Password.
Use the TFSConfig utility to change the service account
On the application-tier server, open a Command Prompt window and change directories to the directory that contains the TFSConfig utility. By default, this utility is located in Drive:\Program Files\TFS 12.0\Tools.
At the command line, enter TFSConfig Accounts /change /accountType:ApplicationTier /account:AccountName /password:NewPassword, and then press ENTER.

Nobody has access to a repository in Azure DevOPs

In trying to restrict access to an Azure DevOps repository, it appears I've denied access to EVERYONE, including myself and project administrators. It is now not visible to any of us so nobody can resolve the issue, but if I try to create a new repository with that name it says I can't because it still exists. Please help - I am desperate!
You need to Look up the Organization owner and contact them, since
The organization owner can provide permissions at any level within the organization or project.
To do so,
Choose the Azure DevOps logo to open Projects, and then choose Organization settings.
Choose Overview and scroll down to show the Organization owner.

Unable to enable Organizational Authorization for custom domain in O365 Azure AD

I want to publish a web application to a Azure Web App and enable Organizational Authentication during the process. The wizard offers the following options:
I've added two custom domains to our Office 365 subscription that also show up in the corresponding Azure AD tenant.
Instead of using the default domain mycompany.onmicrosoft.com I want to use one of those custom domains so that this domain is shown to the user on various web pages that handle authentication and consent. I was able to use the custom domain without any problem when configuring Azure AD authentication for the web project.
When using the custom domain in the wizard (field domain in the screenshot), I first need to enter my O365 credentials. Shortly after, the following error is displayed:
Provisioning the destination end point failed with the error:
'The user account 'x#y.z' doesn't have the required permissions to access the domain 'y.z'.'
If you don't intend to enable Orgnizational Authentication during
publish, please turn that option off in the publish dialog.
The Directory Role of the account is Global Administrator and I've already registered multiple apps using this account. So I don't think that this has anything to do with permissions.
Do I have to use the *.onmicrosoft.com domain or can I solve this in a different way?
As a sidenote (just if this is makes a difference): the web app resides in a Azure subscription that belongs to my Microsoft account whereas the O365 Azure AD is administered by my work account and does not belong to a subscription. Of course, not the most straightforward way, but I guess pretty common for Microsoft partners as the Azure benefits can only be actived on a Microsoft account even if the partner already has a O365 subscription.
To use the custom domain for the organization authentication we need to enable it as the primary domain.
You can check it from the old Azure portal here like figure below:
Update( change the primary domain in new Azure portal)
locate Azure Active Directory->Domain names->select the domain which want to set as primary domain like figure below:

Azure, login to separate accounts with one email

I'm a developer that has an Azure account for my own dev stuff. I log into my dev account using me#hotmail.com.
Next, I set up a client with their own Azure account, then invited myself via me#hotmail.com and set myself as a co-administrator for the client's subscription. When I subsequently log into Azure using me#hotmail.com, I only see my own subscriptions/resources, etc.
Is there a way that I can log into Azure, using me#hotmail.com, and have access to both my dev stuff as well as my client's subscription from within the portal (specifically portal.azure.com).
Not sure if this is supported or if I'm doing something wrong. Thanks
You can only view subscriptions for a single directory at a time.
If you click your name in the top right corner of the portal you can select which directory you want to work from.
There is a suggestion on the Azure feedback site to add the ability to view subscriptions from all directories: http://feedback.azure.com/forums/223579-azure-preview-portal/suggestions/4761959-manage-subscriptions-across-all-available-director

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