You may need to change someone's Office 365 email address and display name if, for example, they get married and their last name changes.
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Note
Tech support scams are an industry-wide issue where scammers trick you into paying for unnecessary technical support services. You can help protect yourself from scammers by verifying that the contact is a Microsoft Agent or Microsoft Employee and that the phone number is an official Microsoft global customer service number.
If you're not using the new Microsoft 365 admin center, you can turn it on by selecting the Try the new admin center toggle located at the top of the Home page.
Watch a short video about changing a user's email address.
If you found this video helpful, check out the complete training series for small businesses and those new to Microsoft 365.
Change a user's email address
You must be an Office 365 global admin to do these steps.
IMPORTANT:If you get an error message, see Resolve error messages.
Set the primary email address
Change a user's display name
It might take up to 24 hours for this change to take effect across all services. After the change has taken effect, the person will have to sign in to Outlook, Skype for Business and SharePoint with their updated username, so be sure to tell them about this change.
It might take up to 24 hours for this change to take effect across all services. After the change has taken effect, the person will have to sign in to Outlook, Skype for Business and SharePoint with their updated username, so be sure to tell them about this change.
It might take up to 24 hours for this change to take effect across all services. After the change has taken effect, the person will have to sign in to Outlook, Skype for Business and SharePoint with their updated username, so be sure to tell them about this change.
Resolve error messages'A parameter cannot be found that matches parameter name 'EmailAddresses'
If you get the error message ' A parameter cannot be found that matches parameter name 'EmailAddresses' it means that it's taking a bit longer for Office 365 to finish setting up your tenant, or your custom domain if you recently added one. The setup process can take up to 4 hours to complete. Wait a while so the set up process has time to finish, and then try again. If the problem persists, call Support and they will do a full sync for you.
![]() 'We're sorry, the user couldn't be edited. Review the user information and try again'
If you get the error message ' We're sorry, the user couldn't be edited. Review the user information and try again.' it means you aren't an Office 365 global admin and you don't have permissions to change the user name. Find the global admin in your business and ask them to make the change.
What to do with old email addresses
A person's previous primary email address is retained as an additional email address. We strongly recommend that you don't remove the old email address.
Mac Change Username And Password Microsoft Email
Some people will likely continue to send email to the person's old email address and deleting it may result in NDR failures. Office 365 will automatically route it to the new one. Also, do not reuse old SMTP email addresses and apply them to new accounts. This can also cause NDR failures or delivery to an unintended mailbox.
What if the person's offline address book won't sync with the Global Address List?
If they are using Exchange Online or if their Office 365 account is linked with your organization's on-premises Exchange environment, you may see this error when you try to change a username and email address: 'This user is synchronized with your local Active Directory. Some details can be edited only through your local Active Directory.'
This is due to the Microsoft Online Email Routing Address (MOERA). The MOERA is constructed from the person's userPrincipalName attribute in Active Directory and is automatically assigned to the cloud account during the initial sync and once created, it cannot be modified or removed in Office 365. You can subsequently change the username in the Active Directory, but it will not change the MOERA and you may run into issues displaying the newly changed name in the Global Address List.
Find Microsoft Username And Password
To fix this, log in to the Azure Active Directory Module for PowerShell with your Microsoft 365 administrator credentials. and use the following syntax:
Tip
This changes the person's userPrincipalName attribute and has no bearing on their Microsoft Online Email Routing Address (MOERA) email address. It is best practice, however, to have the person's logon UPN match their primary SMTP address.
To learn how to change someone's username in Active Directory, in Windows Server 2003 and earlier, see Rename a user account.
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This guide describes how to use Pair to Mac to connect Visual Studio 2019to a Mac build host. The same instructions apply to Visual Studio 2017.
Overview
Building native iOS applications requires access to Apple's build tools,which only run on a Mac. Because of this, Visual Studio 2019 must connect toa network-accessible Mac to build Xamarin.iOS applications.
Visual Studio 2019's Pair to Mac feature discovers, connects to,authenticates with, and remembers Mac build hosts so that Windows-basediOS developers can work productively.
Pair to Mac enables the following development workflow:
Note
Before following the instructions in this guide, complete the following steps:
If you would prefer not to install Visual Studio for Mac, Visual Studio 2019can automatically configure the Mac build host with Xamarin.iOS and Mono.You must still install and run Xcode.For more information, see Automatic Mac provisioning.
Enable remote login on the Mac
To set up the Mac build host, first enable remote login:
Connect to the Mac from Visual Studio 2019
Now that remote login is enabled, connect Visual Studio 2019 to the Mac.
If you have successfully paired to a Mac build host, you are ready to buildXamarin.iOS apps in Visual Studio 2019. Take a look at theIntroduction to Xamarin.iOS for Visual Studioguide.
If you have not been able to pair a Mac, try manually adding aMac or take a look at the troubleshootingguide.
Manually add a Mac
If you do not see a particular Mac listed in the Pair to Mac dialog,add it manually:
Automatic Mac provisioning
Starting with Visual Studio 2019 version 15.6,Pair to Mac automatically provisions a Mac with software necessary forbuilding Xamarin.iOS applications: Mono, Xamarin.iOS (the softwareframework, not the Visual Studio for Mac IDE), and various Xcode-relatedtools (but not Xcode itself).
Important
Pair to Mac performs necessary software installations/updates when VisualStudio 2019 is connecting to theMac.
Mono
Pair to Mac will check to make sure that Mono is installed. If it is notinstalled, Pair to Mac will download and install the latest stable versionof Mono on the Mac.
Progress is indicated by various prompts, as shown by the followingscreenshots (click to zoom):
Xamarin.iOS
Pair to Mac upgrades Xamarin.iOS on the Mac to match the versioninstalled on the Windows machine.
Important
Pair to Mac will not downgrade Xamarin.iOS on the Mac from alpha/betato stable. If you have Visual Studio for Mac installed, set yourrelease channel asfollows:
Progress is indicated by various prompts, as shown by the followingscreenshots (click to zoom):
Xcode tools and license
Pair to Mac will also check to determine whether Xcode has been installedand its license accepted. While Pair to Mac does not install Xcode, itdoes prompt for license acceptance, as shown in the following screenshots(click to zoom):
Additionally, Pair to Mac will install or update various packagesdistributed with Xcode. For example:
The installation of these packages happens quickly and without a prompt.
Note
These tools are distinct from the Xcode Command Line Tools, whichas of macOS 10.9 areinstalled with Xcode.
Troubleshooting automatic Mac provisioning
If you encounter any trouble using automatic Mac provisioning, take a lookat the Visual Studio 2019 IDE logs, stored in%LOCALAPPDATA%XamarinLogs16.0. These logs may contain error messagesto help you better diagnose the failure or get support.
Build iOS apps from the Windows command-line
Pair to Mac supports building Xamarin.iOS applications from the commandline. For example:
The parameters passed to
msbuild in the above example are:
Note
Visual Studio 2019 stores
msbuild in the following directory:C:Program Files (x86)Microsoft Visual Studio2019<Version>MSBuildCurrentBin
The first time Pair to Mac logs in to a particular Mac build host fromeither Visual Studio 2019 or the command-line, it sets up SSH keys. With thesekeys, future logins will not require a username or password. Newlycreated keys are stored in %LOCALAPPDATA%XamarinMonoTouch.
If the
ServerPassword parameter is omitted from a command-line buildinvocation, Pair to Mac attempts to log in to the Mac build hostusing the saved SSH keys.
Summary
This article described how to use Pair to Mac to connect Visual Studio 2019 to aMac build host, enabling Visual Studio 2019 developers to build native iOSapplications with Xamarin.iOS.
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