{"id":1210,"date":"2020-04-15T12:59:13","date_gmt":"2020-04-15T12:59:13","guid":{"rendered":"https:\/\/www.cigatisolutions.com\/blog\/?p=1210"},"modified":"2024-04-10T08:51:10","modified_gmt":"2024-04-10T08:51:10","slug":"outlook-ost-is-in-use-and-cannot-be-accessed","status":"publish","type":"post","link":"https:\/\/www.cigatisolutions.com\/blog\/outlook-ost-is-in-use-and-cannot-be-accessed\/","title":{"rendered":"Solved: &#8216;The File .ost is in Use and Cannot be Accessed&#8217; Error"},"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;1210&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;2&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 - (2 votes)&quot;,&quot;size&quot;:&quot;24&quot;,&quot;title&quot;:&quot;Solved: \\u0026#039;The File .ost is in Use and Cannot be Accessed\\u0026#039; Error&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 - (2 votes)    <\/div>\n    <\/div>\n<p>Have you ever tried opening your emails in Outlook and got this message saying, &#8220;OST is in Use and Cannot be Accessed&#8221;? Outlook can&#8217;t find the emails. Outlook stores its files in an Offline Storage Table (OST), where it keeps all your emails safe. As a result, it is a bit stuck and can&#8217;t bring to your emails. The following blog will discuss various ways to troubleshoot them.<\/p>\n<p><strong>The error pop-up is as follows &#8211;<\/strong><\/p>\n<p><em>\u201cThe file C:\\Users\\mbartlett\\AppData\\Local\\Microsoft\\Outlook\\mbartlett.com &#8211; bartlett.ost is in use and cannot be accessed. Close any application that is using this file, and then try again. You might need to restart your computer.\u201d<\/em><\/p>\n<p><strong><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.cigatisolutions.com\/blog\/wp-content\/uploads\/2020\/04\/ost-in-use-1.png\" alt=\"\" width=\"497\" height=\"214\" \/><\/strong><\/p>\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_82_2 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\/outlook-ost-is-in-use-and-cannot-be-accessed\/#Understanding_the_Reasons_Behind_This_Error\" >Understanding the Reasons Behind This Error<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.cigatisolutions.com\/blog\/outlook-ost-is-in-use-and-cannot-be-accessed\/#Resolving_%E2%80%98OST_is_in_Use_and_Cannot_be_Accessed_Issue_Tips_and_Solutions\" >Resolving &#8216;OST is in Use and Cannot be Accessed&#8217; Issue: Tips and Solutions<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.cigatisolutions.com\/blog\/outlook-ost-is-in-use-and-cannot-be-accessed\/#1_Disabling_Cached_Exchange_Mode\" >#1. Disabling Cached Exchange Mode:<\/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\/outlook-ost-is-in-use-and-cannot-be-accessed\/#2_Ending_Microsoft_Outlook_Processes\" >#2. Ending Microsoft Outlook Processes:<\/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\/outlook-ost-is-in-use-and-cannot-be-accessed\/#3_Recreating_the_MS_Outlook_OST_File\" >#3. Recreating the MS Outlook OST File:<\/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\/outlook-ost-is-in-use-and-cannot-be-accessed\/#4_Disabling_Outlook_Add-ins\" >#4. Disabling Outlook Add-ins:<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.cigatisolutions.com\/blog\/outlook-ost-is-in-use-and-cannot-be-accessed\/#5_Repairing_Outlook_OST_File_Using_the_Inbox_Repair_Tool\" >#5. Repairing Outlook OST File Using the Inbox Repair Tool:<\/a><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.cigatisolutions.com\/blog\/outlook-ost-is-in-use-and-cannot-be-accessed\/#Final_Words\" >Final Words<\/a><\/li><\/ul><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"Understanding_the_Reasons_Behind_This_Error\"><\/span>Understanding the Reasons Behind This Error<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<ul>\n<li>Configuration issue between the associated Exchange mailbox and OST<\/li>\n<li>Incompatible applications with MS Outlook<\/li>\n<li>Numerous users trying to view the same OST file (generally in the scenarios of networked systems)<\/li>\n<li>Inconsistent network connectivity or lagging internet connection<\/li>\n<li>Unauthorized access to the Outlook OST file<\/li>\n<li>Functions like Office Communicator 2007\/2005, UCMAPI.EXE, LYNC, etc. operating in the background<\/li>\n<\/ul>\n<p>Here, we\u2019ve described some possible reasons the file username OST is in use and cannot be accessed in error. Now, we will elaborate on different ways to fix it.<\/p>\n<p><strong>Also Read:<\/strong> <a href=\"https:\/\/www.cigatisolutions.com\/blog\/fix-pst-file-not-an-outlook-data-file-error\/\">PST File is Not an Outlook Data File<\/a><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Resolving_%E2%80%98OST_is_in_Use_and_Cannot_be_Accessed_Issue_Tips_and_Solutions\"><\/span>Resolving &#8216;OST is in Use and Cannot be Accessed&#8217; Issue: Tips and Solutions<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>The following section will discuss various ways to resolve the error. It requires your complete concentration to understand each paragraph.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"1_Disabling_Cached_Exchange_Mode\"><\/span>#1. Disabling Cached Exchange Mode:<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>If your Outlook is acting slow, it might be because of a Cached Exchange Mode. Follow the below steps to turn off the cached exchange mode.<\/p>\n<ul>\n<li>First, click on the <strong>File<\/strong>\u00a0tab at the top of Outlook.<\/li>\n<li>After that, find <strong>Account Settings<\/strong>\u00a0(it&#8217;s there twice, so you can&#8217;t miss it!), and click on it.<\/li>\n<li>Then, look for your email account (Exchange account), select it, and click <strong>Change<\/strong>.<\/li>\n<li>Now, you&#8217;ll see an option that says, <strong>Use Cached Exchange Mode<\/strong>. Uncheck that box.<\/li>\n<li>Further, click <strong>Next<\/strong>, then <strong>Finish<\/strong>, and finally, <strong>Close<\/strong>.<\/li>\n<li>At last, close <strong>Outlook<\/strong> and open it again. Now, it should be speedy without that slow setting.<\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"2_Ending_Microsoft_Outlook_Processes\"><\/span>#2. Ending Microsoft Outlook Processes:<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>If your computer tells you it can&#8217;t open your OST file, follow the below steps to resolve the Outlook OST File is in Use and Cannot be Accessed error.<\/p>\n<ul>\n<li>First, press <strong>Ctrl+Alt+Delete<\/strong> to open the <strong>task manager<\/strong> on the computer.<\/li>\n<li>After that, Click on the <strong>Processes<\/strong>\u00a0tab.<\/li>\n<li>Then, look for two things named outlook.exe or msimn.exe &#8211; causing the problem.<\/li>\n<li>Further, select each one by clicking <strong>End Process<\/strong>.<\/li>\n<li>Close the <strong>Task Manager<\/strong>.<\/li>\n<li>Try opening your OST file.<\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"3_Recreating_the_MS_Outlook_OST_File\"><\/span>#3. Recreating the MS Outlook OST File:<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Read the section below to fix the Outlook OST File Cannot be Accessed error.<\/p>\n<ul>\n<li>First, close all the computer tools that use Outlook.<\/li>\n<li>Afterwards, restart your computer.<\/li>\n<li>Then, find the .ost file on your computer.<\/li>\n<li>Next, delete that file.<\/li>\n<li>Now, open the Microsoft Outlook application again.<\/li>\n<li>Further, Outlook will create a new OST file, and everything should work without problems.<\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"4_Disabling_Outlook_Add-ins\"><\/span>#4. Disabling Outlook Add-ins:<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li>First, open your <strong>Outlook<\/strong> application on your local screen.<\/li>\n<li>After that, click on <strong>File<\/strong>\u00a0at the top, then choose <strong>Options<\/strong>, and finally, click on <strong>Add-Ins<\/strong>.<\/li>\n<li>Next, choose <strong>COM Add-Ins<\/strong>\u00a0from the drop-down menu in the Add-Ins place.<\/li>\n<li>Then, uncheck anything that&#8217;s causing an error.<\/li>\n<li>Subsequently, click <strong>OK<\/strong>\u00a0and close <strong>Outlook<\/strong>.<\/li>\n<li>At last, open <strong>Outlook<\/strong> again.<\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"5_Repairing_Outlook_OST_File_Using_the_Inbox_Repair_Tool\"><\/span>#5. Repairing Outlook OST File Using the Inbox Repair Tool:<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>To repair your OST file, use SCAN.OST tool. It will help users to fix the OST is in Use and Cannot be Accessed error.<\/p>\n<ul>\n<li>First, close the <strong>Outlook<\/strong> application.<\/li>\n<li>Then, Find the ScanPST.exe \u2013 it&#8217;s hiding in different places depending on your Outlook version.<\/li>\n<li>After that, click <strong>Browse<\/strong>\u00a0and locate where your Outlook OST is stored on your computer.<\/li>\n<li>Next, click <strong>Start<\/strong>\u00a0to check what&#8217;s wrong.<\/li>\n<li>After the scanning process, if the tool finds any error, click <strong>Repair<\/strong>.<\/li>\n<li>At last, open <strong>Outlook<\/strong> again. The error should be gone!<\/li>\n<\/ul>\n<p><strong>Important Note:<\/strong><\/p>\n<p>This tool only works for some cases where the email is tricky (orphaned and encrypted OST files) or if the email is too big (above 2 GB).<\/p>\n<p>If the above methods are not working properly, make sure your OST file should not be enough corrupted. If your OST file is damaged, use the <strong>Cigati <a href=\"https:\/\/www.cigatisolutions.com\/ost-file-recovery-tool\/\">OST Recovery Tool<\/a><\/strong>.<\/p>\n<p><strong>Or\u00a0<\/strong><\/p>\n<p>If this solution doesn&#8217;t work, the only remaining option is to convert the OST file data into PST format. For this, use <strong>Cigati <a href=\"https:\/\/www.cigatisolutions.com\/ost-to-pst-converter\/\">OST to PST Converter<\/a><\/strong>.<\/p>\n<h4><span class=\"ez-toc-section\" id=\"Final_Words\"><\/span>Final Words<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<p>The above guide will surely help you to resolve your queries. As a result, we have discussed different manual solutions to fix the Outlook OST is in use and cannot be accessed error. Therefore, it&#8217;s up to you to choose the method accordingly. Sometimes, there are chances that for several reasons, users cannot access their OST files and want to convert them into the PST format.<\/p>\n<p><strong>You May Also Read:<\/strong> <a href=\"https:\/\/www.cigatisolutions.com\/blog\/change-outlook-data-file-location\/\">Change Location of Outlook OST File<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Have you ever tried opening your emails in Outlook and got this message saying, &#8220;OST is in Use and Cannot<a class=\"read-more ml-1 main-read-more\" href=\"https:\/\/www.cigatisolutions.com\/blog\/outlook-ost-is-in-use-and-cannot-be-accessed\/\">Read More<\/a><\/p>\n","protected":false},"author":14,"featured_media":1211,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[45],"tags":[],"class_list":["post-1210","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-email-management-migration"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Solved: &#039;The File .ost is in Use and Cannot be Accessed&#039; Error<\/title>\n<meta name=\"description\" content=\"Are you getting the &#039;The File.ost is in Use and Cannot be Accessed&#039; error message? 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