Office 365 Import Service not Available – Full Guide to Resolve Error

Anuraag | February 7th, 2018 | Office 365

Hello! I regularly use Office 365 for executing my professional and personal tasks. Yesterday, while I was trying to use the PST import service of Office 365 portal, it does not seem to work. After clicking on Import option, it shows the spinning dots for endless hours.I think Office 365 import service not available to my system anymore. Additionally, there is no any optional key to continue it without remaining process. Can someone please tell me that how soon will be I able to operate my Office 365 account again? Are there any workarounds to resolve this issue so that I can use import service – Office 365?”


Are you the one who is facing ‘Office 365 Import Service not Available’ issue while using Office 365 import service? Well, do not worry then! Many Office 365 users are going through the same problem. For resolving this annoying issue of Office 365, we have come up with this article. Here, you will get all probable and easy solutions to resolve this problem. However, before going for the solution users must have an idea about Office 365 Import Service. So, let us begin with a general introduction to Office 365 Import Service.

What is Office 365 Import Service?

Office 365 Import service is a facility of importing emails through PST files into Exchange Online mailboxes Use majorly use Exchange Online PST import service to move data. Sometimes it is referred to as “drive shipping” and this service offers two alternatives:

Option 1: For smaller sets of data, users can upload the PST files to Microsoft servers. Then, Microsoft will import the email data into Exchange Online mailboxes and the problem of Office 365 import service not available issue come in.
Option 2: For larger data sets, users can copy the archive PST files into hard drives and then, can mail them directly to Microsoft data centers. When administrators receive the drives, they copy the PST files into internal servers and import the mail into user’s Office 365 mailboxes.

Techniques of Importing PST Files to Office 365
There are two ways for importing PST files to Office 365, where one is manual and other is automatic. Users can opt any of the methods for bulk import PST to Office 365 account:

  • Using network upload for importing PST Files to Office 365
  • Using Office 365 Import tool for importing PST to Office 365

Note: The mentioned method to use import service – Office 365 is eligible only for administrators.

Importing PST to Office 365 via Network Upload

Follow the mentioned instructions systematically for bulk-import PST files to Office 365 mailboxes:

Step 1: Copy SAS URL and Download Azure AzCopy
Note: During the process, users will get a storage key and an upload URL. Keep secure them and treat them as a password.

  1. Open the link:
  2. Sign in with your Global Admin account
  3. Click on Data Management >> Import >> Go to the import service
  4. Hit a click on + icon and select Upload Files Over the Network option
  5. From the popup page, click on Download Tool (Azure AzCopy tool)
  6. Then, click on Run
  7. Select Next button to undo Office 365 import service not available error
  8. Accept the EULA and click on Next and agree the default installation location
  9. Then click on Next
  10. Install the program
  11. Click on Yes button from User Account Control wizard
  12. Finally, click on Yes button

Step 2: Acquire the Storage Key and Upload URL
Now, you need to upload the secure key and the URL prior to installing AzCopy application. Here is how to do this:

  1. Unlock the Import Data to Office 365 page that was opened in the previous step
  2. Now, click on Key icon
    NOTE: Here you got a secure key and URL. Thus, keep it secure.
  3. Click on Copy Key and wait until process gets completed
  4. Hit a click on Show URL for PST files
  5. Now, copy the key and URL

Step 3: Upload PST Files to Office 365
After acquiring the secure and URL key, users can upload the PST files to Office 365 account. Follow the below mentioned steps:

  1. Launch the command prompt as administrator
  2. Open the directory location where you installed the AzCopy
  3. Run the following command for uploading the PST Files

Step 4: Create the PST Mapping File
Now, the CSV files are required to create because that will map the PST files to the mailbox of Office 365. Then, PST

  1. Files can be uploaded to Office 365 import service not available.
  2. Download PST Mapping Template File via Microsoft
  3. Fill the CSV file with specific information
  4. Now, save PST Mapping File

Step 5: Create a PST Import Job in Office 365
In this step, we have to create a PST Import job in Import service in Exchange Online. To do this, follow down steps:

  1. Click on and then, sign in your Global Admin account
  2. Click on Data Management >> Import >> Import Service
  3. Now, click on + icon and select Upload Files Over the Network
  4. Check against I am done uploading my files >> I have access to the mapping file. Then, click on Next
  5. Now, enter a Job Name and click on Next
  6. Click on + icon to add the Mapping File
  7. Authenticate the Mapping File
  8. Agree with the terms and conditions and click on Finish
  9. Click on Close button
  10. The importing process will start now. You can check the importing status by navigating towards the Office 365 Admin Center and unlocking the Import tab. Use the refresh for getting the updated report
  11. Monitor the status report for process completion or error.
  12. Click on the import job for displaying the status flyout page that displays the status information of each imported PST file

Cons of Manual Methods to Undo Office 365 Import Service Not Available

  1. High cost of importing PST files
  2. Time-consuming and lengthy process
  3. Complicated for a non-technical user
  4. Requisite high storage competence hard drive

Importing PST to Office 365 via Office 365 Importer

Office 365 Importer is a direct and uncomplicated way of importing PST files to Office 365. To execute the operation via this utility follow the down steps successively to use Exchange Online PST import service to Office 365 import service limitations:

  1. Download and launch Office 365 Import tool
  2. Enter the credentials of your Office 365 admin account and click on login
  3. Browse the PST files/folder and click on open button to get import service Office 365
  4. All the PST files will be displayed on preview pane
  5. Now, enter the domain id credentials in which you want to import the PST file and then, authenticate them
  6. Check the desired folders and hit import button
  7. Then, the software will start to importing PST files to Exchange Online mailbox

The Final Thoughts

Office 365 has been provided various services to users i.e., Office 365 Import Service. Sometimes when this service did not respond for importing PST data to Office 365 then, users search for various queries. Considering the needs of users to solve the issuing Office 365 Import Service not Available, we have come up with this article. Here we have discussed one manual approach. If you are finding the manual method somehow complicated then, Office 365 Import tool is a direct way of importing PST to Office 365. This is one of the best and trusted solutions to perform such data importation process. The software can resolve the issue in a few numbers of clicks only. Now, users can opt any of the mentioned methods to get rid Office 365 import service limitations.