{"id":11839,"date":"2025-07-29T08:55:06","date_gmt":"2025-07-29T08:55:06","guid":{"rendered":"https:\/\/www.cigatisolutions.com\/blog\/?p=11839"},"modified":"2025-07-29T09:02:13","modified_gmt":"2025-07-29T09:02:13","slug":"increase-outlook-pst-file-size-limit","status":"publish","type":"post","link":"https:\/\/www.cigatisolutions.com\/blog\/increase-outlook-pst-file-size-limit\/","title":{"rendered":"How to Increase Outlook PST File Size Limit Easily"},"content":{"rendered":"\n\n<div class=\"kk-star-ratings kksr-auto kksr-align-left kksr-valign-top\"\n    data-payload='{&quot;align&quot;:&quot;left&quot;,&quot;id&quot;:&quot;11839&quot;,&quot;slug&quot;:&quot;default&quot;,&quot;valign&quot;:&quot;top&quot;,&quot;ignore&quot;:&quot;&quot;,&quot;reference&quot;:&quot;auto&quot;,&quot;class&quot;:&quot;&quot;,&quot;count&quot;:&quot;1&quot;,&quot;legendonly&quot;:&quot;&quot;,&quot;readonly&quot;:&quot;&quot;,&quot;score&quot;:&quot;5&quot;,&quot;starsonly&quot;:&quot;&quot;,&quot;best&quot;:&quot;5&quot;,&quot;gap&quot;:&quot;5&quot;,&quot;greet&quot;:&quot;Rate this post&quot;,&quot;legend&quot;:&quot;5\\\/5 - (1 vote)&quot;,&quot;size&quot;:&quot;24&quot;,&quot;title&quot;:&quot;How to Increase Outlook PST File Size Limit Easily&quot;,&quot;width&quot;:&quot;142.5&quot;,&quot;_legend&quot;:&quot;{score}\\\/{best} - ({count} {votes})&quot;,&quot;font_factor&quot;:&quot;1.25&quot;}'>\n            \n<div class=\"kksr-stars\">\n    \n<div class=\"kksr-stars-inactive\">\n            <div class=\"kksr-star\" data-star=\"1\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"2\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"3\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"4\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"5\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n    <\/div>\n    \n<div class=\"kksr-stars-active\" style=\"width: 142.5px;\">\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n    <\/div>\n<\/div>\n                \n\n<div class=\"kksr-legend\" style=\"font-size: 19.2px;\">\n            5\/5 - (1 vote)    <\/div>\n    <\/div>\n\n<p>Many individuals export their mailboxes into PST files to back up or declutter their mailboxes. But once the PST file becomes oversized, the backup process may stop or fail. Therefore, one effective way is to increase Outlook PST file size. In this write-up, we will cover all the possible methods to increase the PST file size in Outlook. Keep reading this blog for a deeper understanding of how the process works.&nbsp;<\/p>\n\n\n\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_83 counter-hierarchy ez-toc-counter ez-toc-light-blue ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.cigatisolutions.com\/blog\/increase-outlook-pst-file-size-limit\/#Why_Is_There_a_Need_to_Increase_Maximum_Size_for_PST_Files\" >Why Is There a Need to Increase Maximum Size for PST Files?<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.cigatisolutions.com\/blog\/increase-outlook-pst-file-size-limit\/#Size_Limit_for_Outlook_Data_Files\" >Size Limit for Outlook Data Files<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.cigatisolutions.com\/blog\/increase-outlook-pst-file-size-limit\/#Manually_Set_PST_File_Size_Limit_via_Registry_Editor\" >Manually Set PST File Size Limit via Registry Editor<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.cigatisolutions.com\/blog\/increase-outlook-pst-file-size-limit\/#How_to_Use_Registry_Entries_to_Increase_PST_File_Size_in_Outlook\" >How to Use Registry Entries to Increase PST File Size in Outlook?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.cigatisolutions.com\/blog\/increase-outlook-pst-file-size-limit\/#How_to_Manually_Increase_Outlook_PST_File_Size\" >How to Manually Increase Outlook PST File Size?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.cigatisolutions.com\/blog\/increase-outlook-pst-file-size-limit\/#Automated_Way_to_Increase_Outlook_PST_File_Size\" >Automated Way to Increase Outlook PST File Size<\/a><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.cigatisolutions.com\/blog\/increase-outlook-pst-file-size-limit\/#Conclusion\" >Conclusion<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.cigatisolutions.com\/blog\/increase-outlook-pst-file-size-limit\/#Frequently_Asked_Questions\" >Frequently Asked Questions<\/a><\/li><\/ul><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Why_Is_There_a_Need_to_Increase_Maximum_Size_for_PST_Files\"><\/span>Why Is There a Need to Increase Maximum Size for PST Files?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>The Outlook PST file stores mailbox data, is subject to a predefined size limit that varies by Outlook versions. Over time, as more emails, attachments, and other data are added, the file size can grow rapidly. When the PST file reaches its maximum limit, it can result in issues like:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Outlook fails to add further emails or content<\/li>\n\n\n\n<li>MS Outlook may crash or behave unpredictably.<\/li>\n\n\n\n<li>Backup or archiving process may not complete or may fail.<\/li>\n\n\n\n<li>There\u2019s a serious risk of files becoming corrupted or inaccessible.&nbsp;<\/li>\n<\/ul>\n\n\n\n<p>Increasing the PST file size will prevent such issues and keep Outlook efficient and error-free.&nbsp;<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Size_Limit_for_Outlook_Data_Files\"><\/span>Size Limit for Outlook Data Files<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Given below is a table that shows the maximum Outlook PST File Size limit in different versions of Outlook. Take a look:<\/p>\n\n\n\n<p>For Outlook 2016, 2013, 2010:<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td><strong>Name&nbsp;<\/strong><\/td><td><strong>Type&nbsp;<\/strong><\/td><td><strong>Valid Data Range<\/strong><\/td><td><strong>Default<\/strong><\/td><\/tr><tr><td>MaxLargeFileSize<\/td><td>REG_DWORD<\/td><td>0x00000001 \u2013 0x0000C800<\/td><td>0x0000C800 51,200 (50 GB)<\/td><\/tr><tr><td>WarnLargeFileSize<\/td><td>REG_DWORD<\/td><td>0x00000000 \u2013 0x0000BE00<\/td><td>0x0000BE00 48,640 (47.5 GB)<\/td><\/tr><tr><td>MaxFileSize<\/td><td>REG_DWORD<\/td><td>0x001F4400 \u2013 0x7C004400<\/td><td>0x7BB04400 2,075,149,312 (1.933 GB)<\/td><\/tr><tr><td>WarnFileSize<\/td><td>REG_DWORD<\/td><td>0x00042400 \u2013 0x7C004400<\/td><td>0x74404400 1,950,368,768 (1.816 GB)<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Manually_Set_PST_File_Size_Limit_via_Registry_Editor\"><\/span>Manually Set PST File Size Limit via Registry Editor<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>In Microsoft Outlook 2002 and earlier versions, the default maximum PST File Size is 20 GB. And, in the latest versions like Outlook 2013, 2016, and 2019, the default maximum Outlook PST file size is 50 GB.&nbsp;<\/p>\n\n\n\n<p>This section explains how to increase the Outlook data file by using the Windows Registry Editor. MS Outlook supports four registry entries:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>MaxFileSize:<\/strong> This sets the absolute maximum file size limit. The Outlook file can\u2019t go beyond this.&nbsp;<\/li>\n\n\n\n<li><strong>WarnFileSize:<\/strong> The size at which Outlook blocks adding new emails. Although the physical file size may still grow.<\/li>\n\n\n\n<li><strong>MaxLargeFileSize: <\/strong>It is used for UNICODE PST\/OST files. This sets the maximum size limit they can reach.&nbsp;<\/li>\n\n\n\n<li><strong>WarnLargeFileSize:<\/strong> This sets a warning limit for UNICODE PST\/OST files before the file reaches its absolute maximum limit.<\/li>\n<\/ol>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"How_to_Use_Registry_Entries_to_Increase_PST_File_Size_in_Outlook\"><\/span>How to Use Registry Entries to Increase PST File Size in Outlook?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>In this section, we will look at how to increase the size limit of the Outlook data file. The registry entries will differ according to the Outlook version being used.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td><strong>Outlook Version<\/strong><\/td><td><strong>Policy location for registry entries in Registry Editor<\/strong><\/td><td><strong>User preference location for registry entries in Registry Editor<\/strong><\/td><\/tr><tr><td>Outlook 2016<\/td><td>HKEY_CURRENT_USER\\ Software\\Policies\\Microsoft\\Office\\ 16.0\\Outlook\\PST<\/td><td>HKEY_CURRENT_USER\\Software\\ Microsoft\\Office\\16.0\\Outlook\\PST<\/td><\/tr><tr><td>Outlook 2013<\/td><td>HKEY_CURRENT_USER\\ Software\\Policies\\Microsoft\\Office\\ 15.0\\Outlook\\PST<\/td><td>HKEY_CURRENT_USER\\Software\\ Microsoft\\Office\\15.0\\Outlook\\PST<\/td><\/tr><tr><td>Outlook 2010<\/td><td>HKEY_CURRENT_USER\\ Software\\Policies\\Microsoft\\Office\\ 14.0\\Outlook\\PST<\/td><td>HKEY_CURRENT_USER\\Software\\ Microsoft\\Office\\14.0\\Outlook\\PST<\/td><\/tr><tr><td>Outlook 2007<\/td><td>HKEY_CURRENT_USER\\ Software\\Policies\\Microsoft\\Office\\ 12.0\\Outlook\\PST<\/td><td>HKEY_CURRENT_USER\\Software\\ Microsoft\\Office\\12.0\\Outlook\\PST<\/td><\/tr><tr><td>Outlook 2003<\/td><td>HKEY_CURRENT_USER\\ Software\\Policies\\Microsoft\\Office\\ 11.0\\Outlook\\PST<\/td><td>HKEY_CURRENT_USER\\Software\\ Microsoft\\Office\\11.0\\Outlook\\PST<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"How_to_Manually_Increase_Outlook_PST_File_Size\"><\/span>How to Manually Increase Outlook PST File Size?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>By creating DWORD values &#8211; MaxLargeFileSize and WarnLargeFileSize, under the specific Outlook version, it is possible to increase the maximum size. This method also ensures reliability and improves performance while handling oversized PST files.&nbsp;<\/p>\n\n\n\n<p>The following are the steps to begin the process:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>First, make sure to close the <strong>Outlook<\/strong> application completely.<\/li>\n\n\n\n<li>Then, press <strong>Win+R<\/strong>, type: <strong>regit<\/strong> and hit <strong>Enter<\/strong>.<\/li>\n\n\n\n<li>Now, go to:&nbsp;<\/li>\n<\/ol>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td>HKEY_CURRENT_USER\\Software\\Microsoft\\Office\\&lt;<strong>version&gt;<\/strong>\\Outlook\\PST<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<ol start=\"4\" class=\"wp-block-list\">\n<li>After that, navigate to <strong>Software<\/strong> &gt; <strong>Policies<\/strong> &gt; <strong>Microsoft<\/strong> &gt; <strong>Office<\/strong>.<\/li>\n<\/ol>\n\n\n\n<p>Now, replace the version with:&nbsp;<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td>Outlook 2016, 2019, 2021, MS 365<\/td><td>16.0<\/td><\/tr><tr><td>Outlook 2013<\/td><td>15.0<\/td><\/tr><tr><td>Outlook 2010<\/td><td>14.0<\/td><\/tr><tr><td>Outlook 2007<\/td><td>12.0<\/td><\/tr><tr><td>Outlook 2003<\/td><td>11.0<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<ol start=\"5\" class=\"wp-block-list\">\n<li>Then, right-click, click on <strong>New<\/strong>, and choose <strong>DWORD (32-bit) value<\/strong>.<\/li>\n\n\n\n<li>Now, set the registry name as <strong>MaxLargeFileSize<\/strong>, right-click on it, and click on <strong>Modify<\/strong>.<\/li>\n\n\n\n<li>Afterwards, choose <strong>Decimal<\/strong> under the<strong> Base<\/strong> section and enter the desired value in the <strong>Value Data <\/strong>section. Then, click on <strong>Ok<\/strong>.<\/li>\n\n\n\n<li>Similarly, set the <strong>WarnLargeFileSize<\/strong> registry.&nbsp;<\/li>\n<\/ol>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Automated_Way_to_Increase_Outlook_PST_File_Size\"><\/span>Automated Way to Increase Outlook PST File Size<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>The <strong>Cigati <a href=\"https:\/\/www.cigatisolutions.com\/pst-compress-tool\/\">PST Compress Tool<\/a><\/strong> is a reliable solution to <a href=\"https:\/\/www.cigatisolutions.com\/blog\/reduce-outlook-pst-file-size\/\">reduce the file size of oversized PST files<\/a>. The users have the option to compress either single or multiple PST files in one go. This makes it ideal for managing bulk data while ensuring data integrity. Moreover, it provides flexible options for handling attachments. Users can compress them, separate them from emails, or save them in their folder.\u00a0<\/p>\n\n\n<div class=\"row justify-content-center mac-win-tab mt-3 mb-5\">\n<div class=\"col-md-6\">\n<ul id=\"myTab\" class=\"nav nav-tabs justify-content-center\" role=\"tablist\">\n<li class=\"nav-item\" role=\"presentation\"><button id=\"home-tab\" class=\"nav-link bg-transparent px-4 active\" role=\"tab\" type=\"button\" data-toggle=\"tab\" data-target=\"#home\" aria-controls=\"home\" aria-selected=\"true\"><i class=\"icon-windows\"><\/i> Windows<\/button><\/li>\n<li class=\"nav-item\" role=\"presentation\"><button id=\"profile-tab\" class=\"nav-link bg-transparent px-4\" role=\"tab\" type=\"button\" data-toggle=\"tab\" data-target=\"#profile\" aria-controls=\"profile\" aria-selected=\"false\"><i class=\"icon-apple\"><\/i>Mac<\/button><\/li>\n<\/ul>\n<div id=\"myTabContent\" class=\"tab-content\">\n<div id=\"home\" class=\"tab-pane fade active show\" role=\"tabpanel\" aria-labelledby=\"home-tab\"><span class=\"block_btn\"><a class=\"primary-btn\" href=\"https:\/\/www.cigatisolutions.com\/demo-version\/Cigati-pst-compress-tool-win.exe\"><i class=\"icon-windows\"><\/i> Download Now<\/a>&nbsp;&nbsp;<a class=\"secondary-btn\" href=\"https:\/\/www.cigatisolutions.com\/pst-compress-tool\/purchase-now.php\"><i class=\"icon-basket\"><\/i> Purchase Now<\/a><\/span>\n        <\/div>\n<div id=\"profile\" class=\"tab-pane fade\" role=\"tabpanel\" aria-labelledby=\"profile-tab\"><span class=\"block_btn\"><a class=\"primary-btn\" href=\"https:\/\/www.cigatisolutions.com\/demo-version\/Cigati-pst-compress-tool-for-mac.dmg\"><i class=\"icon-apple\"><\/i> Download Now<\/a>&nbsp;&nbsp;<a class=\"secondary-btn\" href=\"https:\/\/www.cigatisolutions.com\/mac\/pst-compress-tool\/purchase-now.php\"><i class=\"icon-basket\"><\/i> Purchase Now<\/a><\/span>\n        <\/div>\n<\/div>\n<\/div>\n<\/div>\n\n\n<ol class=\"wp-block-list\">\n<li>First, download and run the tool.<\/li>\n\n\n\n<li>Now, open it and <strong>Choose File Type<\/strong> as <strong>Microsoft Outlook (.pst)<\/strong>.<\/li>\n\n\n\n<li>Then, select from<strong> Single File<\/strong> or <strong>Multiple Files\/Folder<\/strong> and click <strong>Next<\/strong>.<\/li>\n\n\n\n<li>After that, click on <strong>Select File(s)<\/strong>, browse, and open the PST\/OST files.<\/li>\n\n\n\n<li>Then, expand the tree structure and choose the folder that you wish to compress. <strong>Preview<\/strong> it and click <strong>Next.<\/strong><\/li>\n\n\n\n<li>Opt for the additional settings to refine the process.<\/li>\n\n\n\n<li>Click on <strong>Path to Save<\/strong> to set the destination location.&nbsp;<\/li>\n\n\n\n<li>Finally, click on <strong>Start Compression<\/strong> to start the process.<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Conclusion\"><\/span>Conclusion<span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n\n\n<p>The Outlook mailbox grows over the period of time and can eventually cause problems. Therefore, to prevent this, increase Outlook PST file size limit using the step-by-step instructions provided in this blog. Moreover, compressing the PST file size as soon as it reaches its maximum limit is a good option. For compressing the PST file, use the <strong>Cigati PST Compress Tool<\/strong>. The tool easily and quickly compresses the PST file size.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Frequently_Asked_Questions\"><\/span>Frequently Asked Questions<span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n\n\n<div class=\"schema-faq wp-block-yoast-faq-block\"><div class=\"schema-faq-section\" id=\"faq-question-1753778317651\"><strong class=\"schema-faq-question\">Q: What is the default size limit of a PST file in Outlook?<\/strong> <p class=\"schema-faq-answer\"><strong>Ans:<\/strong> The default size limit for a Unicode PST file in Outlook 2010 and later is 50 GB. And, for older versions like Outlook 2003 and 2007, the limit is 20 GB.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1753778335116\"><strong class=\"schema-faq-question\">Q: How can I increase the PST file size limit in Outlook?<\/strong> <p class=\"schema-faq-answer\"><strong>Ans:<\/strong> You can increase the PST file size limit by modifying the Windows Registry. This involves modifying <strong>MaxLargeFileSize<\/strong> and <strong>WarnLargeFileSize<\/strong> values under the correct Outlook registry path.<\/p> <\/div> <\/div>\n","protected":false},"excerpt":{"rendered":"<p>Many individuals export their mailboxes into PST files to back up or declutter their mailboxes. But once the PST file<a class=\"read-more ml-1 main-read-more\" href=\"https:\/\/www.cigatisolutions.com\/blog\/increase-outlook-pst-file-size-limit\/\">Read More<\/a><\/p>\n","protected":false},"author":1,"featured_media":11844,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[79],"tags":[],"class_list":["post-11839","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-split-merge"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>How to Increase Outlook PST File Size Limit Easily - Free Guide<\/title>\n<meta name=\"description\" content=\"Learn how to increase Outlook PST file size limits and avoid annoying data errors. Step-by-step guide for all Outlook versions.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.cigatisolutions.com\/blog\/increase-outlook-pst-file-size-limit\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"How to Increase Outlook PST File Size Limit Easily - Free Guide\" \/>\n<meta property=\"og:description\" content=\"Learn how to increase Outlook PST file size limits and avoid annoying data errors. 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