{"id":1377,"date":"2021-01-04T16:04:06","date_gmt":"2021-01-04T16:04:06","guid":{"rendered":"http:\/\/www.mailsdaddy.com\/blogs\/?p=1377"},"modified":"2026-06-19T09:41:46","modified_gmt":"2026-06-19T09:41:46","slug":"fix-outlook-sending-receiving-error-0x800ccc0f","status":"publish","type":"post","link":"https:\/\/www.mailsdaddy.com\/blogs\/fix-outlook-sending-receiving-error-0x800ccc0f\/","title":{"rendered":"How To Fix Outlook Sending and Receiving Error 0x800ccc0f"},"content":{"rendered":"<p data-start=\"62\" data-end=\"353\">Based on user feedback and common Outlook usage patterns, it is clear that Microsoft Outlook is one of the most widely used email clients across businesses and organizations. It offers a range of advanced features that make email management, communication, and productivity easier for users.<\/p>\n<p data-start=\"355\" data-end=\"575\">However, despite its reliability, users often face technical issues that interrupt normal email operations. One such common issue is <strong data-start=\"488\" data-end=\"516\">Outlook error 0x800ccc0f<\/strong>, which usually appears during sending or receiving emails.<\/p>\n<p data-start=\"577\" data-end=\"667\">In this article, we will understand what causes this error and how to fix it step by step.<\/p>\n<p data-start=\"577\" data-end=\"667\"><img fetchpriority=\"high\" decoding=\"async\" class=\"wp-image-1378 aligncenter\" src=\"https:\/\/www.mailsdaddy.com\/blogs\/wp-content\/uploads\/2021\/01\/Fix-error-0x800ccc0f-1.png\" alt=\"outlook error 0x800ccc0f-1\" width=\"534\" height=\"346\" srcset=\"https:\/\/www.mailsdaddy.com\/blogs\/wp-content\/uploads\/2021\/01\/Fix-error-0x800ccc0f-1.png 500w, https:\/\/www.mailsdaddy.com\/blogs\/wp-content\/uploads\/2021\/01\/Fix-error-0x800ccc0f-1-300x194.png 300w\" sizes=\"(max-width: 534px) 100vw, 534px\" \/><\/p>\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_85 counter-hierarchy ez-toc-counter ez-toc-grey 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.mailsdaddy.com\/blogs\/fix-outlook-sending-receiving-error-0x800ccc0f\/#What_is_Outlook_Error_0x800ccc0f\" >What is Outlook Error 0x800ccc0f?<\/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.mailsdaddy.com\/blogs\/fix-outlook-sending-receiving-error-0x800ccc0f\/#Common_Causes_of_Outlook_Error_0x800ccc0f\" >Common Causes of Outlook Error 0x800ccc0f<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.mailsdaddy.com\/blogs\/fix-outlook-sending-receiving-error-0x800ccc0f\/#How_to_Fix_Outlook_Error_0x800ccc0f\" >How to Fix Outlook Error 0x800ccc0f<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.mailsdaddy.com\/blogs\/fix-outlook-sending-receiving-error-0x800ccc0f\/#1_Check_Internet_Connection\" >1. Check Internet Connection<\/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.mailsdaddy.com\/blogs\/fix-outlook-sending-receiving-error-0x800ccc0f\/#2_Verify_Outlook_Account_Settings\" >2. Verify Outlook Account Settings<\/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.mailsdaddy.com\/blogs\/fix-outlook-sending-receiving-error-0x800ccc0f\/#3_Disable_Antivirus_and_Firewall_Temporarily\" >3. Disable Antivirus and Firewall Temporarily<\/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.mailsdaddy.com\/blogs\/fix-outlook-sending-receiving-error-0x800ccc0f\/#4_Start_Outlook_in_Safe_Mode\" >4. Start Outlook in Safe Mode<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.mailsdaddy.com\/blogs\/fix-outlook-sending-receiving-error-0x800ccc0f\/#5_Remove_Suspicious_Emails\" >5. Remove Suspicious Emails<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/www.mailsdaddy.com\/blogs\/fix-outlook-sending-receiving-error-0x800ccc0f\/#6_Repair_Corrupted_OST_File\" >6. Repair Corrupted OST File<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/www.mailsdaddy.com\/blogs\/fix-outlook-sending-receiving-error-0x800ccc0f\/#7_Fix_Oversized_PST_File\" >7. Fix Oversized PST File<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/www.mailsdaddy.com\/blogs\/fix-outlook-sending-receiving-error-0x800ccc0f\/#Conclusion\" >Conclusion<\/a><\/li><\/ul><\/nav><\/div>\n<h2 data-section-id=\"10kyoda\" data-start=\"674\" data-end=\"710\"><span class=\"ez-toc-section\" id=\"What_is_Outlook_Error_0x800ccc0f\"><\/span>What is Outlook Error 0x800ccc0f?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p data-start=\"712\" data-end=\"873\">The <strong data-start=\"716\" data-end=\"744\">Outlook error 0x800ccc0f<\/strong> generally occurs when an SMTP-based email sending or receiving process fails due to a disrupted connection with the mail server.<\/p>\n<p data-start=\"875\" data-end=\"908\"><strong>Typical error message looks like:<\/strong><\/p>\n<p data-start=\"912\" data-end=\"1101\"><strong>\u201cTask &#8216;\u2026 Sending&#8217; reported error (0x800ccc0f): The connection to the server was interrupted. If the problem continues, contact your server administrator or Internet service provider (ISP).\u201d<\/strong><\/p>\n<p data-start=\"1103\" data-end=\"1194\">This indicates that Outlook is unable to maintain a stable connection with the mail server.<\/p>\n<h2 data-section-id=\"1dninaf\" data-start=\"1201\" data-end=\"1245\"><span class=\"ez-toc-section\" id=\"Common_Causes_of_Outlook_Error_0x800ccc0f\"><\/span>Common Causes of Outlook Error 0x800ccc0f<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p data-start=\"1247\" data-end=\"1298\">There are several reasons why this issue may occur:<\/p>\n<ol data-start=\"1300\" data-end=\"1711\">\n<li data-section-id=\"2alrf1\" data-start=\"1300\" data-end=\"1372\">Unstable or slow internet connection affecting server communication<\/li>\n<li data-section-id=\"13fvutx\" data-start=\"1373\" data-end=\"1438\">Incorrect Outlook account configuration (POP3\/SMTP settings)<\/li>\n<li data-section-id=\"1y95f09\" data-start=\"1439\" data-end=\"1506\">Corrupted Outlook profile or Exchange server connection issues<\/li>\n<li data-section-id=\"y0noso\" data-start=\"1507\" data-end=\"1571\">Firewall or antivirus blocking incoming and outgoing emails<\/li>\n<li data-section-id=\"1cc3jal\" data-start=\"1572\" data-end=\"1639\">Sudden system shutdown or power failure during synchronization<\/li>\n<li data-section-id=\"1l74ute\" data-start=\"1640\" data-end=\"1676\">Oversized or corrupted PST file<\/li>\n<li data-section-id=\"4e3zzw\" data-start=\"1677\" data-end=\"1711\">Damaged or corrupted OST file<\/li>\n<\/ol>\n<h2 data-section-id=\"1dmmp71\" data-start=\"1718\" data-end=\"1756\"><span class=\"ez-toc-section\" id=\"How_to_Fix_Outlook_Error_0x800ccc0f\"><\/span>How to Fix Outlook Error 0x800ccc0f<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p data-start=\"1758\" data-end=\"1817\">Follow the methods below to resolve this issue effectively:<\/p>\n<h3 data-section-id=\"abfape\" data-start=\"1819\" data-end=\"1851\"><span class=\"ez-toc-section\" id=\"1_Check_Internet_Connection\"><\/span>1. Check Internet Connection<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p data-start=\"1852\" data-end=\"2033\">Ensure your internet connection is stable. Restart your router or switch networks if required. A weak connection is one of the most common triggers for <strong data-start=\"2004\" data-end=\"2032\">Outlook error 0x800ccc0f<\/strong>.<\/p>\n<h3 data-section-id=\"40l5s0\" data-start=\"2040\" data-end=\"2078\"><span class=\"ez-toc-section\" id=\"2_Verify_Outlook_Account_Settings\"><\/span>2. Verify Outlook Account Settings<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p data-start=\"2079\" data-end=\"2151\">Incorrect settings can disrupt email communication. Check the following:<\/p>\n<ul data-start=\"2153\" data-end=\"2263\">\n<li data-section-id=\"dd0fc6\" data-start=\"2153\" data-end=\"2184\">Email username and password<\/li>\n<li data-section-id=\"1dnlyxk\" data-start=\"2185\" data-end=\"2222\">POP3\/IMAP and SMTP server details<\/li>\n<li data-section-id=\"4qzb4w\" data-start=\"2223\" data-end=\"2263\">Port numbers and encryption settings<\/li>\n<\/ul>\n<p data-start=\"2265\" data-end=\"2348\">If the issue persists, create a new Outlook profile to rule out profile corruption.<\/p>\n<h3 data-section-id=\"198a7f1\" data-start=\"2355\" data-end=\"2404\"><span class=\"ez-toc-section\" id=\"3_Disable_Antivirus_and_Firewall_Temporarily\"><\/span>3. Disable Antivirus and Firewall Temporarily<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p data-start=\"2405\" data-end=\"2458\">Security software may block Outlook\u2019s network access.<\/p>\n<ul data-start=\"2460\" data-end=\"2572\">\n<li data-section-id=\"1cc3jz7\" data-start=\"2460\" data-end=\"2521\">Disable Windows Defender real-time protection temporarily<\/li>\n<li data-section-id=\"mkphsb\" data-start=\"2522\" data-end=\"2572\">Turn off Windows Firewall for testing purposes<\/li>\n<\/ul>\n<p data-start=\"2574\" data-end=\"2668\">If Outlook starts working, adjust firewall rules instead of keeping them disabled permanently.<\/p>\n<h3 data-section-id=\"1vtqgow\" data-start=\"2675\" data-end=\"2708\"><span class=\"ez-toc-section\" id=\"4_Start_Outlook_in_Safe_Mode\"><\/span>4. Start Outlook in Safe Mode<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p data-start=\"2709\" data-end=\"2772\">Safe Mode helps identify whether add-ins are causing the issue.<\/p>\n<p data-start=\"2774\" data-end=\"2780\">Steps:<\/p>\n<ul data-start=\"2781\" data-end=\"2849\">\n<li data-section-id=\"t03nux\" data-start=\"2781\" data-end=\"2806\">Press <strong data-start=\"2789\" data-end=\"2804\">Windows + R<\/strong><\/li>\n<li data-section-id=\"ujoki3\" data-start=\"2807\" data-end=\"2836\">Type: <code data-start=\"2815\" data-end=\"2834\">Outlook.exe \/safe<\/code><\/li>\n<li data-section-id=\"1275k17\" data-start=\"2837\" data-end=\"2849\">Press OK<\/li>\n<\/ul>\n<p data-start=\"2851\" data-end=\"2914\">If Outlook works fine in Safe Mode, disable suspicious add-ins.<\/p>\n<h3 data-section-id=\"4digmj\" data-start=\"2921\" data-end=\"2952\"><span class=\"ez-toc-section\" id=\"5_Remove_Suspicious_Emails\"><\/span>5. Remove Suspicious Emails<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p data-start=\"2953\" data-end=\"3078\">Malicious or corrupted emails can interrupt synchronization. Check your inbox and delete any suspicious or unreadable emails.<\/p>\n<h3 data-section-id=\"l17f8x\" data-start=\"3085\" data-end=\"3117\"><span class=\"ez-toc-section\" id=\"6_Repair_Corrupted_OST_File\"><\/span>6. Repair Corrupted OST File<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p data-start=\"3118\" data-end=\"3314\">A damaged OST file is a major reason behind synchronization failures. You can use built-in repair tools, but in severe cases, it may be necessary to <a href=\"https:\/\/www.mailsdaddy.com\/ost-to-pst-converter\/\"><strong data-start=\"3267\" data-end=\"3289\">convert OST file into Outlook PST<\/strong><\/a> for recovery and access.<\/p>\n<p data-start=\"3316\" data-end=\"3404\">Converting OST to PST helps restore mailbox data in a healthy Outlook-compatible format.<\/p>\n<h3 data-section-id=\"1y4db9y\" data-start=\"3411\" data-end=\"3440\"><span class=\"ez-toc-section\" id=\"7_Fix_Oversized_PST_File\"><\/span>7. Fix Oversized PST File<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p data-start=\"3441\" data-end=\"3549\">Large PST files can slow down Outlook and trigger errors like <strong data-start=\"3503\" data-end=\"3531\">Outlook error 0x800ccc0f<\/strong>. To resolve this:<\/p>\n<ul data-start=\"3551\" data-end=\"3669\">\n<li data-section-id=\"wm3nzm\" data-start=\"3551\" data-end=\"3573\">Archive old emails<\/li>\n<li data-section-id=\"1rdm74b\" data-start=\"3574\" data-end=\"3602\">Delete unnecessary items<\/li>\n<li data-section-id=\"1epjuyb\" data-start=\"3603\" data-end=\"3669\">Use a PST split method to divide large files into smaller ones<\/li>\n<\/ul>\n<h2 data-section-id=\"8dtpi\" data-start=\"3676\" data-end=\"3689\"><span class=\"ez-toc-section\" id=\"Conclusion\"><\/span>Conclusion<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p data-start=\"3691\" data-end=\"3925\">The <strong data-start=\"3695\" data-end=\"3723\">Outlook error 0x800ccc0f<\/strong> is mainly caused by network issues, incorrect settings, or corrupted data files like PST and OST. By following the troubleshooting steps above, users can effectively restore normal email functionality.<\/p>\n<p data-start=\"3927\" data-end=\"4075\" data-is-last-node=\"\" data-is-only-node=\"\">In cases of file corruption, repairing or choosing to <strong data-start=\"3981\" data-end=\"4003\">convert OST to PST<\/strong> can help recover important mailbox data and prevent future disruptions.<\/p>\n<p><strong><span style=\"font-size: 16px;\">Read More:- <\/span><a style=\"font-size: 16px; background-color: #ffffff;\" title=\"Permanent Link to Method to fix Microsoft Outlook error 0x80070002\" href=\"https:\/\/www.mailsdaddy.com\/blogs\/method-fix-microsoft-outlook-error-0x80070002\/\" rel=\"bookmark\">Method to fix Microsoft Outlook error 0x80070002<\/a><\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Based on user feedback and common Outlook usage patterns, it is clear that Microsoft Outlook is one of the most widely used email clients across businesses and organizations. It offers a range of advanced features that make email management, communication, and productivity easier for users. However, despite its reliability, users often face technical issues that [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":1379,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[173,320],"tags":[370,369,368,371,372],"class_list":["post-1377","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-outlook","category-outlook-error","tag-0x800ccc0f","tag-error-0x800ccc0f","tag-fix-outlook-error-0x800ccc0f","tag-outlook-error-error-0x800ccc0f","tag-sending-receiving-error-error-0x800ccc0f"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.1 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>How To Fix Outlook Sending and Receiving Error 0x800ccc0f.<\/title>\n<meta name=\"description\" content=\"The best technique to fix Outlook sending and receiving error 0x800ccc0f. 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