FG

Does anyone know if it's 'normal' that you can't defrag an Outlook .ost file?

Fresh3 days ago
Mar 15, 20262035 views
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Problem

I've tried defragmenting my hard disk to see if Outlook performance improves. The .ost file shows 1000+ fragments but even after a post-defragmentation restart - never launching Outlook - it still shows that the file hasn't actually been defragmented. Could this be contributing to slower Outlook pe…

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Fix for: Does anyone know if it's 'normal' that you can't defrag an Outlook .ost file?

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Is it 'normal'? Yes. Can you defragment them? Yes, but you need an extra MS utility called "Contig" (short for Contiguous). You can get Contig from here. Tutorial (from here): Close the Outlook program. Click the "Start" button, then click the "Sear…

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