{"id":5862,"date":"2022-05-02T09:37:29","date_gmt":"2022-05-02T09:37:29","guid":{"rendered":"https:\/\/www.cigatisolutions.com\/blog\/?p=5862"},"modified":"2025-09-18T10:54:06","modified_gmt":"2025-09-18T10:54:06","slug":"reduce-ost-file-size","status":"publish","type":"post","link":"https:\/\/www.cigatisolutions.com\/blog\/reduce-ost-file-size\/","title":{"rendered":"How to Reduce OST File Size in Microsoft Outlook?"},"content":{"rendered":"\n\n
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Are you facing difficulties while managing the oversize OST file? You have landed on the right page. In this technical post, we are going to discuss the best possible ways to reduce OST file size using a manual and professional approach. So stay tuned to this post to know more in detail.<\/p>\n

OST file is a data file storage that is created by MS Outlook. These OST files are used to store a copy of mailbox items from an Office 365, Exchange, or Outlook.com account. This OST file is stored on the hard drive and contains email messages, contacts, calendars, tasks, and other account information. Apart from this, users can also create appointments, search or add a contact, or read & write emails while they are offline.<\/p>\n

Hence, users can perform any changes in the OST files when they are connected to any internet connection. These offline files are increasing and occupying the storage space that is reflecting errors bugs and hangs in the Outlook email service. In such a scenario, In that case, Outlook reduces OST File Size which helps users to manage their Outlook account efficiently.<\/p>\n

Also Read: <\/strong>Reduce Outlook PST File Size<\/a><\/p>\n

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