{"id":5502,"date":"2018-08-20T08:12:35","date_gmt":"2018-08-20T08:12:35","guid":{"rendered":"https:\/\/www.sysinfotools.com\/blog\/?p=5502"},"modified":"2025-12-04T05:35:52","modified_gmt":"2025-12-04T05:35:52","slug":"fix-error-0x80070021-in-outlook-2016","status":"publish","type":"post","link":"https:\/\/www.sysinfotools.com\/blog\/fix-error-0x80070021-in-outlook-2016\/","title":{"rendered":"4 Quick Fixes for Error 0x80070021 in Outlook 2016\/2010\/2007"},"content":{"rendered":"<div class=\"p-4 mb-4\" style=\"border: 2px solid #005EFF; border-radius: 30px;\">\r\n<p><strong>User Query:\u00a0<\/strong>\u201dWhen I try to backup my outlook.pst file to another location on a different system, I encounter \u201cerror 0x80070021.\u201d What error is this and how can I resolve the error code 0x80070021 when it shows up in Outlook? Please suggest a reliable and quick method.\u201d<\/p>\r\n<\/div>\r\n<div class=\"block_sum\"><strong>Summary:-<\/strong> This error message indicates that the copying process is blocked because another task has secured a part of the file. Let us explore what causes this error and how to get rid of Outlook error code 0x80070021. Try different manual troubleshooting steps or find a secure <a href=\"https:\/\/www.sysinfotools.com\/recovery\/pst-recovery.php\"><strong>PST File Recovery<\/strong><\/a> Tool to access inaccessible PST files with ease.\r\n<p class=\"blog-btn\"><a class=\"sum-d-btn\" href=\"https:\/\/www.sysinfotools.com\/demo-version\/SysInfoTools-PST-recovery.exe\"><i class=\"icon-windows\"><\/i> Download<\/a> <a class=\"sum-b-btn\" href=\"https:\/\/www.sysinfotools.com\/buynow\/pst-recovery.php\"><i class=\"icon icon-basket\"><\/i> Buy Now<\/a><\/p>\r\n<\/div>\r\n<p>Outlook is an Email application developed by Microsoft. Users use it to send and receive Emails. MS Outlook has millions of active users across the globe. Due to current work-from-home culture Emails have become the primary source of communication. It can be downright maddening and can affect the performance when Outlook displays unexpected Errors.<\/p>\r\n<p>In this blog, we will discuss the various methods to Fix Error 0x80070021 in Outlook 2016. IT Experts suggest <strong>PST File Recovery<\/strong> for a quick and reliable fix of PST files. Error 0x80070021 is usually caused when a user attempts to back up Outlook PST files. Without any further delay, let\u2019s get started.<\/p>\r\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_81 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<div class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/div>\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.sysinfotools.com\/blog\/fix-error-0x80070021-in-outlook-2016\/#Safety_Measures_to_Prevent_Error_0x80070021\" >Safety Measures to Prevent Error 0x80070021<\/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.sysinfotools.com\/blog\/fix-error-0x80070021-in-outlook-2016\/#Manually_Fix_Error_0x80070021_in_Outlook_2016\" >Manually Fix Error 0x80070021 in Outlook 2016<\/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.sysinfotools.com\/blog\/fix-error-0x80070021-in-outlook-2016\/#Task_Manager\" >Task Manager<\/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.sysinfotools.com\/blog\/fix-error-0x80070021-in-outlook-2016\/#Restore_Point\" >Restore Point<\/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.sysinfotools.com\/blog\/fix-error-0x80070021-in-outlook-2016\/#Remove_Indexing_Tool\" >Remove Indexing Tool<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.sysinfotools.com\/blog\/fix-error-0x80070021-in-outlook-2016\/#Professional_Tool_to_Fix_Error_0x80070021\" >Professional Tool to Fix Error 0x80070021<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.sysinfotools.com\/blog\/fix-error-0x80070021-in-outlook-2016\/#Conclusion\" >Conclusion<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Safety_Measures_to_Prevent_Error_0x80070021\"><\/span>Safety Measures to Prevent Error 0x80070021<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n<p>This issue commonly arises in Outlook or any other Windows program that utilizes background processes. Applications like Skype, Google Calendar Sync, and Microsoft Office Communicator could contribute to the occurrence of this error. What steps can be taken to eliminate or fix error 0x80070021 in Outlook 2016? Consider the following guidelines:<\/p>\r\n<ul>\r\n<li>Outlook 2013 and 2017 support a PST file size of up to 20GB, while Outlook 2010, 2013, and 2016 support up to 50 GB. To prevent corruption, it&#8217;s advisable to err on the side of caution and keep your Outlook PST file below 10GB.<\/li>\r\n<li>Avoid abruptly closing the Outlook application, as doing so might lead to damage to your Personal PST folder.<\/li>\r\n<li>For Microsoft Outlook 2002, which supports a maximum PST file size of 2GB, aim to keep your file size below 2GB to steer clear of error code 0x80070021.<\/li>\r\n<li>Opt against storing PST files on servers when safeguarding your Outlook data. Instead, store your files on your desktop to reduce the risk of corruption and the appearance of Error 0x80070021 in Outlook.<\/li>\r\n<li>To fend off virus attacks and potential corruption problems, install a reliable antivirus program on your system.<\/li>\r\n<\/ul>\r\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Manually_Fix_Error_0x80070021_in_Outlook_2016\"><\/span>Manually Fix Error 0x80070021 in Outlook 2016<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n<p>The following section will guide you to resolve error 0x80070021. It has three parts which are as follows:<\/p>\r\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Task_Manager\"><\/span>Task Manager<span class=\"ez-toc-section-end\"><\/span><\/h3>\r\n<ul>\r\n<li>Press <strong>Ctrl + Alt +Delete<\/strong> and open Task Manager Or <strong>Right click<\/strong> on the taskbar of the desktop and choose Task Manager Option.<br \/><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-14006 size-full\" src=\"https:\/\/www.sysinfotools.com\/blog\/wp-content\/uploads\/2018\/08\/1-1.png\" alt=\"Fix Error 0x80070021\" width=\"337\" height=\"200\" \/><\/li>\r\n<li>Under the Processes tab, look for applications such as Outlook process and Click on it.<img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-14007\" src=\"https:\/\/www.sysinfotools.com\/blog\/wp-content\/uploads\/2018\/08\/2.png\" alt=\"Error Fixed\" width=\"437\" height=\"300\" \/><\/li>\r\n<li>Select <strong>End Task<\/strong>.<\/li>\r\n<\/ul>\r\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Restore_Point\"><\/span>Restore Point<span class=\"ez-toc-section-end\"><\/span><\/h3>\r\n<ol>\r\n<li>Log into your system as an Administrator.<\/li>\r\n<li>Click the <strong>Start Button<\/strong> on the desktop &gt;&gt; Click on <strong>All Programs Option &gt;&gt; Windows Accessories &gt;&gt; System Tools &gt;&gt; System Restore.<\/strong><\/li>\r\n<li>Now select \u201c<strong>Restore my computer to an earlier time<\/strong>\u201d.<\/li>\r\n<li>Under the option on this list, click \u201c<strong>restore point<\/strong>\u201d, select the latest system restore option and click on <strong>Next<\/strong>.<\/li>\r\n<li>Click Next on the confirmation window.<\/li>\r\n<li>Restart your system when the restoration process is completed.<\/li>\r\n<\/ol>\r\n<p>You are halfway to Fix Error 0x80070021 in Outlook 2016. Proceed to the next part.<\/p>\r\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Remove_Indexing_Tool\"><\/span>Remove Indexing Tool<span class=\"ez-toc-section-end\"><\/span><\/h3>\r\n<ol>\r\n<li>Open Outlook, go to <strong>Tools <\/strong>on the Menu bar.<\/li>\r\n<li>Click on <strong>\u2018Trust Centre\u2019<\/strong>.<br \/><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-14008\" src=\"https:\/\/www.sysinfotools.com\/blog\/wp-content\/uploads\/2018\/08\/3.png\" alt=\"Trust Center\" width=\"437\" height=\"300\" \/><\/li>\r\n<li>On the left-hand pane, choose <strong>Add-Ins<\/strong> and then near the bottom of the window, you\u2019ll see a button that will let you manage your COM Add-Ins.<\/li>\r\n<li>Ensure that you have selected <strong>\u2018COM Add-Ins\u2019<\/strong> from the drop-down box and then click <strong>GO<\/strong>.<img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-14009\" src=\"https:\/\/www.sysinfotools.com\/blog\/wp-content\/uploads\/2018\/08\/4.png\" alt=\"COM Add Ins\" width=\"437\" height=\"300\" \/><\/li>\r\n<li>Highlight Windows <strong>\u2018Search Email Indexer\u2019<\/strong> and then click <strong>\u2018Remove\u2019<\/strong>.<\/li>\r\n<li>Click <strong>OK <\/strong>and then close Outlook.<\/li>\r\n<li>Re-open Outlook and run the backup. (The program recommends that Outlook restart before backing up)<\/li>\r\n<\/ol>\r\n<p>Try all the steps and recommend restarting Outlook or the computer to have changes effect upon the next login. After following these steps a user will Fix Error 0x80070021 in Outlook 2016.<\/p>\r\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Professional_Tool_to_Fix_Error_0x80070021\"><\/span>Professional Tool to Fix Error 0x80070021<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n<p>The <strong>Sysinfo PST File Recovery tool<\/strong> offers a secure and effective resolution, enabling users to retrieve data from Outlook PST files that have become corrupted or damaged. This reliable utility is adept at directly recovering various Outlook email elements such as Emails, Calendars, Contacts, Tasks, and more from the impaired PST files, all without any risks involved. It also enables to <a href=\"https:\/\/www.sysinfotools.com\/blog\/fix-exchange-server-is-unavailable-error\/\"><strong>fix Exchange Server is Unavailable error<\/strong><\/a>. The steps for the software are:<\/p>\r\n<ol>\r\n<li>Run <strong>PST File Recovery Tool <\/strong>with administrative privileges.<\/li>\r\n<li>Click <strong>Open<\/strong>, and add the problematic PST files.<\/li>\r\n<li>While adding the file, choose the <strong>Recovery Mode<\/strong> in the Software Wizard and click <strong>OK<\/strong>.<\/li>\r\n<li>Select the Files\/Folders from the <strong>Tree structure.<\/strong><\/li>\r\n<li>Finally, click <strong>Save <\/strong>and define the destination path and the file extension.<\/li>\r\n<\/ol>\r\n<p>After following the above steps you will Fix Error 0x80070021 in Outlook 2016.<\/p>\r\n<p><strong>Also Read:<\/strong> <a href=\"https:\/\/www.sysinfotools.com\/blog\/microsoft-outlook-error-0x800ccc1a\/\">Fix Error 0x800ccc1a in Outlook<\/a><\/p>\r\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Conclusion\"><\/span>Conclusion<span class=\"ez-toc-section-end\"><\/span><\/h3>\r\n<p>It is time to conclude the blog. Before parting our ways let&#8217;s recall what we have gained from this blog. In this blog, we discussed Precautions and methods to fix Error 0x80070021 in Outlook 2016. The Manual method is capable of resolving the error, however, in case of PST file corruption, it is of no use. The <strong>Sysinfo PST File Recovery Tool <\/strong>is capable of resolving the error and fixing corrupted or damaged PST Files.<\/p>\r\n<h4 class=\"faq_heading\">Frequently Asked Questions<\/h4>\r\n\r\n<div class=\"schema-faq wp-block-yoast-faq-block\">\r\n<div id=\"faq-question-1693224349123\" class=\"schema-faq-section\"><strong class=\"schema-faq-question\"><strong><strong>Q.\u00a0<\/strong><\/strong>How can I Trust the PST File Recovery Tool?<\/strong>\r\n<p class=\"schema-faq-answer\"><strong>Ans<\/strong>\u00a0\u2013\u00a0Sysinfo has received many awards in data security and also has some renowned clients like Accenture, TCS, Microsoft, Reliance, etc.<\/p>\r\n<\/div>\r\n<div id=\"faq-question-1693224352837\" class=\"schema-faq-section\"><strong class=\"schema-faq-question\"><strong><strong>Q.\u00a0<\/strong><\/strong>Is there a size limitation on PST files to use the software?<\/strong>\r\n<p class=\"schema-faq-answer\"><strong>Ans<\/strong>\u00a0\u2013\u00a0No, there is no file size limit for PST files to perform the process.<\/p>\r\n<\/div>\r\n<\/div>\r\n\n\n<div class=\"kk-star-ratings kksr-auto kksr-align-left kksr-valign-bottom\"\n    data-payload='{&quot;align&quot;:&quot;left&quot;,&quot;id&quot;:&quot;5502&quot;,&quot;slug&quot;:&quot;default&quot;,&quot;valign&quot;:&quot;bottom&quot;,&quot;ignore&quot;:&quot;&quot;,&quot;reference&quot;:&quot;auto&quot;,&quot;class&quot;:&quot;&quot;,&quot;count&quot;:&quot;25&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 - (25 votes)&quot;,&quot;size&quot;:&quot;24&quot;,&quot;title&quot;:&quot;4 Quick Fixes for Error 0x80070021 in Outlook 2016\\\/2010\\\/2007&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 - (25 votes)    <\/div>\n    <\/div>\n","protected":false},"excerpt":{"rendered":"<p>User Query:\u00a0\u201dWhen I try to backup my outlook.pst file to another location on a different system, I encounter \u201cerror 0x80070021.\u201d<a class=\"read-more ml-1 main-read-more\" href=\"https:\/\/www.sysinfotools.com\/blog\/fix-error-0x80070021-in-outlook-2016\/\">Read More<\/a><\/p>\n","protected":false},"author":1,"featured_media":5511,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[532],"tags":[],"class_list":["post-5502","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-file-recovery-repair"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>4 Quick Fixes for Error 0x80070021 in Outlook 2016\/2010\/2007<\/title>\n<meta name=\"description\" content=\"Learn the possible solution to fix error 0x80070021 in Outlook, so read the article carefully and also check some precautions to the error.\" \/>\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.sysinfotools.com\/blog\/fix-error-0x80070021-in-outlook-2016\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"4 Quick Fixes for Error 0x80070021 in Outlook 2016\/2010\/2007\" \/>\n<meta property=\"og:description\" content=\"Learn the possible solution to fix error 0x80070021 in Outlook, so read the article carefully and also check some precautions to the error.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.sysinfotools.com\/blog\/fix-error-0x80070021-in-outlook-2016\/\" \/>\n<meta property=\"og:site_name\" content=\"SysinfoTools Tech Blog\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/sysinfotools\" \/>\n<meta property=\"article:published_time\" content=\"2018-08-20T08:12:35+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-12-04T05:35:52+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.sysinfotools.com\/blog\/wp-content\/uploads\/2018\/08\/fix-error-5.png\" \/>\n\t<meta property=\"og:image:width\" content=\"698\" \/>\n\t<meta property=\"og:image:height\" content=\"400\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"author\" content=\"Simran Bhatia\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Simran Bhatia\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"6 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/www.sysinfotools.com\/blog\/fix-error-0x80070021-in-outlook-2016\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.sysinfotools.com\/blog\/fix-error-0x80070021-in-outlook-2016\/\"},\"author\":{\"name\":\"Simran Bhatia\",\"@id\":\"https:\/\/www.sysinfotools.com\/blog\/#\/schema\/person\/0bc86a610ba204e43dcf67ac0c4f422a\"},\"headline\":\"4 Quick Fixes for Error 0x80070021 in Outlook 2016\/2010\/2007\",\"datePublished\":\"2018-08-20T08:12:35+00:00\",\"dateModified\":\"2025-12-04T05:35:52+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.sysinfotools.com\/blog\/fix-error-0x80070021-in-outlook-2016\/\"},\"wordCount\":980,\"publisher\":{\"@id\":\"https:\/\/www.sysinfotools.com\/blog\/#organization\"},\"image\":{\"@id\":\"https:\/\/www.sysinfotools.com\/blog\/fix-error-0x80070021-in-outlook-2016\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/www.sysinfotools.com\/blog\/wp-content\/uploads\/2018\/08\/fix-error-5.png\",\"articleSection\":[\"File Recovery &amp; 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