Securely Migrate OST File to Office 365 | Easy Process

Real World Scenario:

A mid-sized US law firm faced difficulties when lawyers needed remote access to archived emails stored in legacy OST files. With strict compliance regulations, they imported OST to Office 365 without issue and ensured secure access from all devices. The shift ensured no downtime, improved collaboration, and met legal data retention policies seamlessly.

Why is it Critical to Migrate OST File to Office 365?

Several significant reasons make the OST file to Office 365 migration essential. These are:

• HR/IT teams often need to secure the OST files of previous employees for transfer to Office 365 for compliance.
• Local OST files can persist after Exchange disasters; migration ensures data isn’t lost and remains accessible to the user.
• Companies migrating 1000+ users to Microsoft 365 require management of the orphaned OST files.
• Professionals changing devices or accounts may want to transition the OST data to Office 365 mailboxes.

These examples demonstrate that OST migration isn’t just a technical issue. It seriously impacts organisation continuity, compliance, and access to documents.. 

Furthermore, to get a brief understanding of how you can migrate the files, take a look at the methods provided below.

Expert Way to Import Outlook OST to Office 365

The automated OST Converter Tool is a far more efficient and quicker solution for enterprise and power users who need bulk migrations. It can directly import data into Office 365 without an intermediate PST and supports OSTs for all Outlook versions. Additionally, it maintains a folder hierarchy, preserves attachments, and provides options for selective migration. Moreover, it has several advanced filtering options and a demo version to free convert up to 50 emails per folder.

Working Procedure to Migrate OST File to Office 365

1. Start the OST to Office 365 Migration Tool and click the Next button.

2. Afterward, add the OST file(s) from your local machine to the utility. Hit Next.

3. Then, preview mailbox items (emails, contacts, calendars, tasks). Again, tap Next.

4. Further, select Office 365 as the destination, and enter the admin/user credentials.

5. Later, as needed, apply filters. Finally, click Convert to securely upload the OST data into the Office 365 mailbox.

Note: This option is scalable for single-user needs and for enterprise bulk migrations.

One-Time Service Offer: Want an effortless conversion without any software downloads? Reach out to our 24*7 tech support to avail our cost-efficient one-time file conversion service!

Manual Approach to Upload OST to Office 365

Since no direct method for OST import into Office 365 accounts prevails, we will see  the roundway. The steps are:

Part 1: Export OST File to PST

1. First, launch MS Outlook with an active profile. 
2. Next, within the File menu, access Open and Export.
3. Moving ahead, choose Import/Export >> Export to a File in the wizard and Next.
4. Further, pick the Outlook Data File (.pst) option and continue with Next.
5. Later, select the OST files/folders from the tree and click Next to pick a destination.
6. With Browse, set your desired output location and tap on Finish for OST to PST conversion.

Part 2: Migrate OST File to Office 365

Now, after you receive the PST (converted OST), what’s left is to import PST file to Office 365. By doing so, you can access the Outlook OST items in the Microsoft account. 

Note: An alternative to it is that you can try the IMAP configuration in Outlook for direct import OST to Office 365. However, the calendars and contacts aren’t synced in this transfer via the IMAP process.

Shortfalls of the Manual Method 

• Not suitable for the entire transfer of the mailbox data within the OST files.
• The process is too lengthy, requires a lot of time, and human effort for accuracy.
• You need stable internet connectivity and good technical skills and knowledge to perform it.
• This is an indirect, two-way process (OST→PST→Office 365) and is not capable of secure migrations. 
• Moreover, there are high chances of attachments and metadata loss when you import Outlook OST to Office 365.

So, it’s best to consider a dedicated solution like the all-in-one software explained above. 

Conclusion

Migrating an OST file to Office 365 is more than a technical requirement. It supports business continuity, accessibility, and regulatory compliance. There are some manual options for migration methods, but these are limited and are impractical in many situations. Instead, using a dedicated OST to Office 365 Migrator to migrate OST file to Office 365 is the most reliable, smart, and secure method that scales. 

Frequently Asked Questions

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