{"id":4648,"date":"2019-11-08T13:01:27","date_gmt":"2019-11-08T13:01:27","guid":{"rendered":"https:\/\/www.kerneldatarecovery.com\/blog\/?p=4648"},"modified":"2021-03-16T05:23:00","modified_gmt":"2021-03-16T05:23:00","slug":"fix-default-outlook-profile-ost-must-be-restartederror","status":"publish","type":"post","link":"https:\/\/www.kerneldatarecovery.com\/blog\/fix-default-outlook-profile-ost-must-be-restartederror\/","title":{"rendered":"Fix \u201cdefault outlook profile .ost must be restarted\u201derror"},"content":{"rendered":"<p>The MS Outlook application faces several issues like an incoming mail gets affected by a virus, accidental deletion of items, hardware failure, software corruption, etc. But some errors occur due to the mismanagement by the user, and you will find them quite irksome because there are no dedicated methods to remove them. You need to use various troubleshooting techniques and see which one removes the error.<\/p>\n<p>One such error is the default outlook account.ost must be restarted. Here is its full text-<\/p>\n<p>\u201cMicrosoft Outlook exited without properly closing your Outlook data file \u2018<strong>Default Outlook Profile.ost.<\/strong>\u2019 \u2018<strong>Microsoft Outlook<\/strong>\u2019 must be started. It this error messages recurs, contact support for \u2018<strong>Microsoft Outlook<\/strong>\u2019 for assistance.\u201d<\/p>\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/www.kerneldatarecovery.com\/blog\/wp-content\/uploads\/2021\/03\/1.png\"><img decoding=\"async\" loading=\"lazy\" width=\"496\" height=\"214\" src=\"https:\/\/www.kerneldatarecovery.com\/blog\/wp-content\/uploads\/2021\/03\/1.png\" alt=\"Microsoft Outlook for assistance\" class=\"wp-image-6668\" srcset=\"https:\/\/www.kerneldatarecovery.com\/blog\/wp-content\/uploads\/2021\/03\/1.png 496w, https:\/\/www.kerneldatarecovery.com\/blog\/wp-content\/uploads\/2021\/03\/1-300x129.png 300w\" sizes=\"(max-width: 496px) 100vw, 496px\" \/><\/a><\/figure>\n<p>The error is descriptive and shows that because you did not close the Outlook properly last time, you need to start it once again. You may face several performance issues related to Outlook and see a special icon, which shows that it is working on the issue. When the icon disappears, the Outlook reconciles with the new OST or PST file. When you shut down the Outlook, then the reconciliation process pauses, and on restarting Outlook, the process resumes.<\/p>\n<p>You have shut down the Outlook properly, and so may be thinking that why is the error showing. Here are some reasons which may be behind the error and their solutions:<\/p>\n<ul>\n<li>\n<h4>Interference of the anti-virus program<\/h4>\n<p>The anti-virus program scans the system for threats always and checks the emails in Outlook. So, when you closed the Outlook, the anti-virus was still checking the mails. Eventually, the scan was not complete, and the OST file was stuck in the middle. Now it is not opening and showing the error. So, you need to disable the anti-virus scanning and run Outlook again.<\/li>\n<li>\n<h4>Faulty Outlook add-ins<\/h4>\n<p>When the user has multiple add-ins in Outlook, sometimes they may create issues. You need to uninstall the add-in one by one and check if Outlook starts working again.<\/li>\n<li>\n<h4>Cached Exchange Mode<\/h4>\n<ol>\n<li>Go to <strong>Control Panel<\/strong> and click <strong>Mail<\/strong>.<\/li>\n<li>Select the Email <strong>Accounts<\/strong> option.<\/li>\n<li>Go to the <strong>Email<\/strong> tab and choose the email account in which the OST file is giving the problem. Now click <strong>Change<\/strong>.<\/li>\n<li>Uncheck the option \u2018<strong>Use Cached Exchanged Mode<\/strong>.\u2019<\/li>\n<li>Click <strong>Next<\/strong>, then <strong>Finish<\/strong>.<\/li>\n<\/ol>\n<\/li>\n<li>\n<h4>Create a new Outlook profile after deleting the current one<\/h4>\n<p>When you create a profile in the Outlook, then it creates its OST file automatically. If you are not able to open Outlook due to the error, then you can delete the account and create it again. Outlook will now create a new OST file with all the data in it.<\/p>\n<ol>\n<li>Go to<strong> Control Panel<\/strong> and click <strong>Mail<\/strong>.<\/li>\n<li>Click <strong>Email Accounts<\/strong>.<\/li>\n<li>Select the account that is creating the issue and delete it.<\/li>\n<li>Click the <strong>New<\/strong> button and add a new account in the Outlook. It will automatically create an OST file and recover the emails also.<\/li>\n<\/ol>\n<\/li>\n<li>\n<h4>Convert the OST file to PST<\/h4>\n<p>If the OST file has some important emails in it and you need to retrieve them anyhow, then you can convert the corrupt OST file to a PST file. After converting OST to PST, you can add the PST file to Outlook and access the emails. You need to do this using a third-party tool like <a href=\"https:\/\/www.kerneldatarecovery.com\/ost-recovery.html\">OST Recovery<\/a>. It is a simple yet efficient tool which can remove any severe corruption from the OST file and recover all its content back to you.<\/li>\n<\/ul>\n<p align=\"center\"><a class=\"dl\" href=\"https:\/\/www.kerneldatarecovery.com\/dl\/dl.php?id=54\" onclick=\"dataLayer.push({'event': 'TrackEvent', 'eventCategory': 'Download', 'eventAction': 'OSTRecovery', 'eventLabel': 'BlogDLid=54'});\"><img decoding=\"async\" loading=\"lazy\" class=\"alignnone size-full wp-image-1659 noshadow\" src=\"https:\/\/www.kerneldatarecovery.com\/blog\/wp-content\/uploads\/2018\/06\/dl-btn-new.png\" alt=\"Download Now\" width=\"160\" height=\"49\"><\/a><\/p>\n<h4>Conclusion<\/h4>\n<p>The \u2018default Outlook profile.ost must be restarted\u2019 is a common error faced by many Outlook users. To fix this issue, you need to try various troubleshooting methods that are presented in the article. But any troubleshooting method does not guarantee the recovery of your account and its emails. That\u2019s why you should try <strong>OST Recovery <\/strong>software to <a href=\"https:\/\/www.kerneldatarecovery.com\/blog\/how-to-recover-a-mailbox-from-an-ost-file\/\">recover a mailbox from OST file data<\/a>.<\/p>\n<div id=\"moreinfo\">\n<h4>&nbsp;&nbsp; Related Topic<\/h4>\n<ul>\n<li><a href=\"https:\/\/www.kerneldatarecovery.com\/blog\/salvage-data-of-your-inaccessible-ost-by-converting-it-to-pst\/\">Salvage data of your Inaccessible OST by Converting it to PST<\/a><\/li>\n<li><a href=\"https:\/\/www.kerneldatarecovery.com\/blog\/fixed-the-file-username-ost-is-in-use-and-cannot-be-accessed\">The File \u201cusername.ost is in use and cannot be accessed\u201d Fixed<\/a><\/li>\n<li><a href=\"https:\/\/www.kerneldatarecovery.com\/blog\/how-to-migrate-data-from-ost-to-mbox\/\">How to Migrate data from Outlook OST to MBOX?<\/a><\/li>\n<\/ul>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>The MS Outlook application faces several issues like an incoming mail gets affected by a virus, accidental deletion of items, hardware failure, software corruption, etc. But some errors occur due to the mismanagement by the user, and you will find them quite irksome because there are no dedicated methods to remove them. You need to [&hellip;]<\/p>\n","protected":false},"author":12,"featured_media":4651,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_stopmodifiedupdate":true,"_modified_date":""},"categories":[5],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v19.10 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Fix \u201cdefault outlook profile .ost must be restarted\u201derror<\/title>\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.kerneldatarecovery.com\/blog\/fix-default-outlook-profile-ost-must-be-restartederror\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Fix \u201cdefault outlook profile .ost must be restarted\u201derror\" \/>\n<meta property=\"og:description\" content=\"The MS Outlook application faces several issues like an incoming mail gets affected by a virus, accidental deletion of items, hardware failure, software corruption, etc. But some errors occur due to the mismanagement by the user, and you will find them quite irksome because there are no dedicated methods to remove them. You need to [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.kerneldatarecovery.com\/blog\/fix-default-outlook-profile-ost-must-be-restartederror\/\" \/>\n<meta property=\"og:site_name\" content=\"Data Recovery Blog - KDR Tools\" \/>\n<meta property=\"article:published_time\" content=\"2019-11-08T13:01:27+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2021-03-16T05:23:00+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.kerneldatarecovery.com\/blog\/wp-content\/uploads\/2019\/11\/How-to-fix-the-error-default-outlook-account-ost-must-be-restarted.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1600\" \/>\n\t<meta property=\"og:image:height\" content=\"739\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Aftab Alam\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Aftab Alam\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"4 minutes\" \/>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Fix \u201cdefault outlook profile .ost must be restarted\u201derror","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.kerneldatarecovery.com\/blog\/fix-default-outlook-profile-ost-must-be-restartederror\/","og_locale":"en_US","og_type":"article","og_title":"Fix \u201cdefault outlook profile .ost must be restarted\u201derror","og_description":"The MS Outlook application faces several issues like an incoming mail gets affected by a virus, accidental deletion of items, hardware failure, software corruption, etc. But some errors occur due to the mismanagement by the user, and you will find them quite irksome because there are no dedicated methods to remove them. You need to [&hellip;]","og_url":"https:\/\/www.kerneldatarecovery.com\/blog\/fix-default-outlook-profile-ost-must-be-restartederror\/","og_site_name":"Data Recovery Blog - KDR Tools","article_published_time":"2019-11-08T13:01:27+00:00","article_modified_time":"2021-03-16T05:23:00+00:00","og_image":[{"width":1600,"height":739,"url":"https:\/\/www.kerneldatarecovery.com\/blog\/wp-content\/uploads\/2019\/11\/How-to-fix-the-error-default-outlook-account-ost-must-be-restarted.jpg","type":"image\/jpeg"}],"author":"Aftab Alam","twitter_card":"summary_large_image","twitter_misc":{"Written by":"Aftab Alam","Est. reading time":"4 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/www.kerneldatarecovery.com\/blog\/fix-default-outlook-profile-ost-must-be-restartederror\/#article","isPartOf":{"@id":"https:\/\/www.kerneldatarecovery.com\/blog\/fix-default-outlook-profile-ost-must-be-restartederror\/"},"author":{"name":"Aftab Alam","@id":"https:\/\/www.kerneldatarecovery.com\/blog\/#\/schema\/person\/c9cd8fe08b5f5080047a483bcef1b681"},"headline":"Fix \u201cdefault outlook profile .ost must be restarted\u201derror","datePublished":"2019-11-08T13:01:27+00:00","dateModified":"2021-03-16T05:23:00+00:00","mainEntityOfPage":{"@id":"https:\/\/www.kerneldatarecovery.com\/blog\/fix-default-outlook-profile-ost-must-be-restartederror\/"},"wordCount":680,"commentCount":0,"publisher":{"@id":"https:\/\/www.kerneldatarecovery.com\/blog\/#organization"},"articleSection":["Email Recovery"],"inLanguage":"en-US","potentialAction":[{"@type":"CommentAction","name":"Comment","target":["https:\/\/www.kerneldatarecovery.com\/blog\/fix-default-outlook-profile-ost-must-be-restartederror\/#respond"]}]},{"@type":"WebPage","@id":"https:\/\/www.kerneldatarecovery.com\/blog\/fix-default-outlook-profile-ost-must-be-restartederror\/","url":"https:\/\/www.kerneldatarecovery.com\/blog\/fix-default-outlook-profile-ost-must-be-restartederror\/","name":"Fix \u201cdefault outlook profile .ost must be restarted\u201derror","isPartOf":{"@id":"https:\/\/www.kerneldatarecovery.com\/blog\/#website"},"datePublished":"2019-11-08T13:01:27+00:00","dateModified":"2021-03-16T05:23:00+00:00","breadcrumb":{"@id":"https:\/\/www.kerneldatarecovery.com\/blog\/fix-default-outlook-profile-ost-must-be-restartederror\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.kerneldatarecovery.com\/blog\/fix-default-outlook-profile-ost-must-be-restartederror\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/www.kerneldatarecovery.com\/blog\/fix-default-outlook-profile-ost-must-be-restartederror\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/www.kerneldatarecovery.com\/blog\/"},{"@type":"ListItem","position":2,"name":"Fix \u201cdefault outlook profile .ost must be restarted\u201derror"}]},{"@type":"WebSite","@id":"https:\/\/www.kerneldatarecovery.com\/blog\/#website","url":"https:\/\/www.kerneldatarecovery.com\/blog\/","name":"Data Recovery Blog - 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