OST to PST Converter Tool Frequently Asked Questions
Find answers to common questions about licensing, system compatibility, standalone file processing, and migration steps for OST to PST Converter Tool.
Q How do I convert an OST file to PST without an Exchange Server connection?
Open Prism OST to PST Converter, click Add File to select your .ost archive, browse your folders in the preview pane, choose PST (Unicode) in Step 4, and click Convert. The engine reads the offline OST file directly without contacting Exchange Server or requiring Outlook.
Q Can I convert an orphaned OST file if the user account was deleted?
Yes. Even if the Active Directory account, domain controller, or Microsoft 365 mailbox was permanently deleted, Prism reads the local offline OST cache and recovers all emails, contacts, and calendar entries into a clean PST file.
Q How do I fix Outlook error 0x8004010F using this converter?
Outlook error 0x8004010F occurs when the profile cannot locate or access the configured mailbox cache. Instead of risking data loss with ScanPST, convert your existing OST file into a new PST with Prism and import it into a fresh Outlook profile.
Q Will email attachments and inline images be preserved?
Yes. All file attachments (PDFs, Word documents, spreadsheets, images, ZIP files) and inline graphics are preserved byte-for-byte with original filenames and timestamps.
Q What is the maximum OST file size supported?
There is no file size limit. Prism smoothly processes large 50 GB to 100 GB+ OST archives without running out of memory or freezing.
Q How does the auto-split PST feature prevent Outlook slowdowns?
Outlook performance degrades significantly when PST archives approach 50 GB. The auto-split option automatically splits large mailboxes into multiple smaller PST files (such as 5 GB or 10 GB each) during export.
Q Does this tool require Microsoft Outlook to be installed?
No. Prism is a 100% standalone desktop application. It does not require Microsoft Outlook, Exchange Server, or MAPI subsystem components to be installed on your computer.
Q Where are my OST files located on Windows?
Default path on Windows 11 and 10: C:\Users\
Q Can I preview my emails before purchasing a license?
Yes. The free evaluation download allows you to scan any OST file, browse the full folder hierarchy, and preview email headers, message bodies, and attachments before buying.
Q Is my mailbox data private and secure during conversion?
Yes. All conversion processing is performed 100% locally on your computer. Your files, emails, and credentials are never uploaded to any remote server or third-party cloud.
Q Can I evaluate OST to PST Converter Tool before purchasing a license?
Yes. You can download the free evaluation version of OST to PST Converter Tool to inspect your data hierarchy and convert up to 50 items per folder to verify formatting and metadata fidelity before buying.
Q How will I receive my license key after purchasing?
Following successful payment, your digital license key is delivered to your billing email address. If you need your key resent or require assistance with activation, you can contact our team anytime via our Contact Support page.
Q What is the refund policy for OST to PST Converter Tool?
We provide free evaluation versions for all tools so you can test compatibility and conversion fidelity on your own data before buying. If you encounter a verified technical limitation or defect that our engineering support team cannot resolve, purchases are covered under the terms detailed on our Refund Policy page.
Have a specific question not covered above?
Our technical support team is available to assist with installation, format compatibility, or licensing queries.