Office 365 is the favorite destination of the majority of business organizations when they think about a suitable cloud platform. It has become a dominant player in the cloud business and businesses are migrating their data at a rapid speed. However, there are multiple precautions which you should take care while migrating the data; otherwise, there can be some unwanted errors.
In this article, we will go through one significant error which does not even let the migration started. The error is following –
The request failed. The remote server returned an error: (401) Unauthorized.
If you are facing this kind of error, then there may be multiple reasons behind this issue
1. The user ID is different than the UPN (User Principal Name).
If the Office 365 account which you are using is different from the UPN from the Active Directory, then you will have to face the error.
2. MFA (Multi-Factor Authentication) is enabled for Office 365.
If the Office 365 has multi-factor authentication enabled for the account, this it is not easy for a manual method to access the mailbox easily.
3. The Username and Password have incorrect spelling.
The spelling of the username and password of the Office 365 is not correct.
4. The domain of Office 365 is not registered with the DNS of the Microsoft.
Many times, the user creates an Office 365 account and try to start the migration instantly. Then the error may occur, because the domain of the Office 365 may not be registered with the Microsoft DNS.
If you are facing this error, then you may try to use the following solutions to rectify the problem –
After making all the appropriate changes in the Office 365 account, the error should be removed, and the migration should also be smooth. But if you still are facing the same error due to UPN settings and there is no manual method to solve the problem, then use a professional tool which can bypass all the technicalities and perform the migration on your terms. Kernel Migrator for Exchange – Express Edition is the best-suited migration software which can access the email ID along with the UPN ID and complete the migration. Here is the brief procedure for Office 365 Migration –
Date Filter – Input a date range.
Item Type Filter – Check various options among Email, Journal, Task, Contacts, Calendar/Appointment.
Exclude Deleted Folders – Stop the deleted folders from migration
Exclude empty folder – Stop empty folders from migration.
Save all hierarchy in a new folder – Provide a name of the folder, and all the data will be saved in the folder.
Set operation timeout – Set the time limit for the migration of each item.
Skip migration items previously – Stop already migrated items from migration.
Finally, click I am OK, Start Migration.
After completing the migration procedure, click OK.
When you are using Kernel Migrator for Exchange – Express Edition, you will not have to face errors like 401 – Unauthorized Access. Exchange migration software is a flexible tool which supports the Office 365 environment and reduces the network complexities. For much assistance, you can contact the technical team which is available to you 24*7.