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How to Repair a Large OST File That’s Causing Outlook to Slow Down
by sam samjackob - Friday, 17 October 2025, 4:35 AM
 

My OST file size has grown too large, and Outlook has started lagging and crashing frequently. I suspect the OST file is partially corrupted. Can anyone guide me on how to repair a large OST file and make Outlook run smoothly again without losing mailbox data?

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Picture of Bailey Gowing
Re: How to Repair a Large OST File That’s Causing Outlook to Slow Down
by Bailey Gowing - Friday, 17 October 2025, 5:19 AM
 

If your OST files crossed the 50 GB limit, the file gets large or oversized. Users don't need to panic; you can easily repair oversized OST files with FixVare OST Converter. It can easily repair oversized OST files and provides simple steps to repair them.

  1. Launch FixVare OST Converter on your system.
  2. Click Add File and browse to select the oversized OST file.
  3. The software will scan and preview all mailbox items.
  4. Choose the desired format to save the repaired data (like PST).
  5. Click Convert or Save to complete the process.

Get More Info for Oversized or Large OST Files: 

https://www.perrysplacepromotions.org/blog/how-to-repair-a-damaged-ost-file-due-to-large-size
Read More Info: https://www.fixvare.com/products/ost/
 
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