Compact personal folders (.pst) files in Outlook to eliminate deleted and unwanted items to save hard disk space. In order to save hard disk space you should have to delete the unwanted items from the various .pst and .ost files and then you can easily compact Outlook to make them smaller.
When you try to delete the unwanted items from each folder, these deleted items moved into the deleted item folder which is located at the same files. If you want to save more space then you must have permanently delete them thats will really helps you to compact Outlook.
The compacting process doesn't have ability to remove all free spaces from the pst and ost files. This leaves the 16 Kb or 4 percent of the file size before compacting. To Compact Outlook files, the files must carries the following requirements such as the file size is must be 16 Kb or larger and at least the pst or ost file size is 16 Kb.
The Outlook Compaction process automatically runs into the background and compact the outlook whenever the compaction is required.
You can also start the compaction process manually just click on the more setting option and then click the advanced tab, then select the offline folder setting and finally click on Compact Now button. If you unable to compact your Outlook files you can edit into the registry value to save the valuable disk space.
You may face PST over-sized problem, so you should compact Outlook to avoid over-sized pst problem. The compaction process really helps you in this situation.
In order to fix over-sized problems in outlook you need a Outlook repair tool to repair your pst files, you can use built-in scanpst.exe inbox repair tool to fix this problem. But in some cases this fails to repair .pst files. At that situation you need an advanced Outlook repair tool to repair your .pst files.
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