How to troubleshoot “Can’t Verify Domain” error in Office 365?

Office 365 is the latest version of the Microsoft Office series. It uses a group of subscriptions that offer productivity suites and allied services.

For Consumers-

Office 365 permits the use of Microsoft Office apps on different platforms, including macOS, Windows, Android and Windows 10 mobile phones. It also offers storage space on the OneDrive file hosting service along with 60 minutes of Skype calling per month.

For Businesses-

The Office suite provides service subscription for various services, including email and social networking via hosted versions of SharePoint, Exchange Server, Skype for Business Server, and Office Online, integration with Yammer.

The Office setup 365 version has some of the exceptional features like real-time co-authoring in Word, Excel and PowerPoint, chat with the co-workers in Office apps, turning OneNote items into the Outlook calendar event, turning data into a map, editing and converting to PDF, resume reading and more. You can use another feature of it, i.e. adding and verifying a domain to be used by multiple users. While verifying a domain in Microsoft Office 365, you may receive the below mentioned message, which indicates that an error has occurred:

“We can't verify the domain because it is associated with another Microsoft hosted service. A domain can be associated with only one service. To use this domain, first remove it from the other service, and then try again to verify the domain.”

Cause of this error

This error may occur due to any of the following reasons:

• The domain you are trying to verify already exists in another Microsoft cloud services. For instance, this domain is already available in Live@edu
• The domain you are trying to verify is federated with Microsoft Exchange Online

Troubleshooting Steps

Choose one of the following troubleshooting methods:

• While verifying a domain in Office 365, just remember that only one domain can exist in the cloud services at one time. If you want to use some other domain then remove the existing one from Live@edu
• If this new domain exists from an Exchange federation trust that was previously enabled, remove the federation trust either by using the EMC or the Shell

If you still receive the same error, i.e. “can’t verify domain” then contact Microsoft Office customer support or visit Office.com/Setup. The team of technicians offers quick and the most reliable support services for 24&7. They will instantly provide you the solution.

Source: https://lenasmithtechnicalsupporter.wordpress.com/2017/12/22/how-to-troubleshoot-cant-verify-domain-error-in-office-365/