{"id":6,"date":"2021-11-03T17:38:00","date_gmt":"2021-11-03T17:38:00","guid":{"rendered":"https:\/\/www.winmail-dat.com\/blog\/?p=6"},"modified":"2022-12-29T18:24:03","modified_gmt":"2022-12-29T18:24:03","slug":"how-to-open-winmail-dat-file-on-windows","status":"publish","type":"post","link":"https:\/\/www.winmail-dat.com\/blog\/2021\/11\/03\/how-to-open-winmail-dat-file-on-windows\/","title":{"rendered":"How to open winmail.dat file on Windows"},"content":{"rendered":"\n<p>If you are here, it means that you\u2019ve received an empty email with the attachment <strong>winmail.dat<\/strong>. You are wondering: <a href=\"https:\/\/web.archive.org\/web\/20211128204155\/https:\/\/www.winmail-dat.com\/blog\/2021\/10\/15\/what-is-a-winmail-dat-file\/\">what is it<\/a> and how to open it? A winmail.dat file or (<a href=\"https:\/\/en.wikipedia.org\/wiki\/Transport_Neutral_Encapsulation_Format\">TNEF<\/a>) is a special attachment type sent by Microsoft email applications. Many email client applications like <a href=\"https:\/\/www.thunderbird.net\/\">Thunderbird<\/a> cannot open them. The Winmail.dat Reader is a free application that allows you to open any winmail.dat file.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Open the winmail.dat attachment on Windows without installation<\/h2>\n\n\n\n<p>If you received a winmail.dat file only once, you probably don\u2019t need to install an application just to open it. If that\u2019s the case, you can use the <a href=\"https:\/\/www.winmail-dat.com\/online.php\">online Winmail.dat Reader<\/a>. You can learn how to <a href=\"https:\/\/www.winmail-dat.com\/blog\/2021\/10\/15\/how-to-open-a-winmail-dat-file\/\">read a winmail.dat attachment through the online reader here<\/a>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Open winmail.dat files natively on Windows<\/h2>\n\n\n\n<p>If you receive winmail.dat files all the time, you might consider installing the Winmail.dat Reader on your PC and associating it with .dat file extensions. This way you can open the TNEF attachments with one mouse click.<\/p>\n\n\n\n<p>Another reason you want to install the Winmail.dat Reader on your computer is about security. By using any online service you are uploading the attachment file to the internet to decode it. If you believe that your attachment has sensitive or business-relevant data, you should consider installing the winmail.dat reader locally.<\/p>\n\n\n\n<p>Follow the steps below to install and run the Winmail.dat Reader on Windows 10, Windows 7, Windows 95, or 98.<\/p>\n\n\n\n<div class=\"schema-how-to wp-block-yoast-how-to-block\"><p class=\"schema-how-to-total-time\"><span class=\"schema-how-to-duration-time-text\">Time needed:&nbsp;<\/span>1 minute<\/p><p class=\"schema-how-to-description\">Decoding a winmail.dat file on Windows<\/p> <ol class=\"schema-how-to-steps\"><li class=\"schema-how-to-step\" id=\"how-to-step-1672337956798\"><strong class=\"schema-how-to-step-name\"><strong>Download the Winmail.dat Reader<\/strong><\/strong> <p class=\"schema-how-to-step-text\">In your web browser, open <a href=\"https:\/\/www.winmail-dat.com\/\">www.winmail-dat.com<\/a> and click to download the Winmail.dat Reader for Windows<br\/><br\/> <img loading=\"lazy\" decoding=\"async\" width=\"305\" height=\"81\" src=\"https:\/\/www.winmail-dat.com\/blog\/wp-content\/uploads\/2022\/12\/image-5.png\" class=\"attachment-full size-full\" alt=\"In your web browser, open www.winmail-dat.com and click to download the Winmail.dat Reader for Windows \" style=\"max-width: 100%; height: auto;\" srcset=\"https:\/\/www.winmail-dat.com\/blog\/wp-content\/uploads\/2022\/12\/image-5.png 305w, https:\/\/www.winmail-dat.com\/blog\/wp-content\/uploads\/2022\/12\/image-5-300x80.png 300w\" sizes=\"auto, (max-width: 305px) 100vw, 305px\" \/><\/p> <\/li><li class=\"schema-how-to-step\" id=\"how-to-step-1672338104704\"><strong class=\"schema-how-to-step-name\"><strong>Launch the Winmail.dat Reader installer<\/strong><\/strong> <p class=\"schema-how-to-step-text\">Click on the downloaded file and select <em>Open<\/em> to launch Winmail.dat Reader installation. If you receive a warning \u201cDo you want to allow this app from an unknown publisher to make changes to your device?\u201d, click Yes.<\/p> <\/li><li class=\"schema-how-to-step\" id=\"how-to-step-1672338116459\"><strong class=\"schema-how-to-step-name\"><strong>If you receive a warning<\/strong><\/strong> <p class=\"schema-how-to-step-text\"> \u201cDo you want to allow this app from an unknown publisher to make changes to your device?\u201d click on <strong>Yes<\/strong>.<br\/>\u201cWindows protected your PC\u201d just click on <strong>More Info<\/strong> and then on <strong>Run anyway<\/strong><\/p> <\/li><li class=\"schema-how-to-step\" id=\"how-to-step-1672338148668\"><strong class=\"schema-how-to-step-name\"><strong>Install the application<\/strong><\/strong> <p class=\"schema-how-to-step-text\">Accept the License Agreement and click on install.<img loading=\"lazy\" decoding=\"async\" width=\"618\" height=\"483\" src=\"https:\/\/www.winmail-dat.com\/blog\/wp-content\/uploads\/2022\/12\/image-4.png\" class=\"attachment-full size-full\" alt=\"\" style=\"max-width: 100%; height: auto;\" srcset=\"https:\/\/www.winmail-dat.com\/blog\/wp-content\/uploads\/2022\/12\/image-4.png 618w, https:\/\/www.winmail-dat.com\/blog\/wp-content\/uploads\/2022\/12\/image-4-300x234.png 300w\" sizes=\"auto, (max-width: 618px) 100vw, 618px\" \/><\/p> <\/li><li class=\"schema-how-to-step\" id=\"how-to-step-1672338177837\"><strong class=\"schema-how-to-step-name\"><strong>Associate .dat files with the Winmail.dat Reader<\/strong><\/strong> <p class=\"schema-how-to-step-text\">After the installation, run the Winmail.dat Reader. The first time you open it, you will be prompted with the settings window. Click on <strong>Associated .dat files with this application<\/strong> and press OK.<\/p> <\/li><li class=\"schema-how-to-step\" id=\"how-to-step-1672338192637\"><strong class=\"schema-how-to-step-name\"><strong>Open the winmail.dat file<\/strong><\/strong> <p class=\"schema-how-to-step-text\">In your email client, open the winmail.dat file you\u2019ve received as an attachment. The Winmail.dat Reader will open automatically and decode the file for you.<\/p> <\/li><\/ol><\/div>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>If you are here, it means that you\u2019ve received an empty email with the attachment winmail.dat. You are wondering: what is it and how to open it? A winmail.dat file or (TNEF) is a special attachment type sent by Microsoft email applications. Many email client applications like Thunderbird cannot open them. The Winmail.dat Reader is [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-6","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>How to open winmail.dat file on Windows - Winmail.dat Reader<\/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.winmail-dat.com\/blog\/2021\/11\/03\/how-to-open-winmail-dat-file-on-windows\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"How to open winmail.dat file on Windows - Winmail.dat Reader\" \/>\n<meta property=\"og:description\" content=\"If you are here, it means that you\u2019ve received an empty email with the attachment winmail.dat. You are wondering: what is it and how to open it? A winmail.dat file or (TNEF) is a special attachment type sent by Microsoft email applications. Many email client applications like Thunderbird cannot open them. The Winmail.dat Reader is [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.winmail-dat.com\/blog\/2021\/11\/03\/how-to-open-winmail-dat-file-on-windows\/\" \/>\n<meta property=\"og:site_name\" content=\"Winmail.dat Reader\" \/>\n<meta property=\"article:published_time\" content=\"2021-11-03T17:38:00+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2022-12-29T18:24:03+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.winmail-dat.com\/blog\/wp-content\/uploads\/2022\/12\/image-5.png\" \/>\n<meta name=\"author\" content=\"Winmail.dat Team\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Winmail.dat Team\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"3 minutes\" \/>\n<script type=\"application\/ld+json\" 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If you receive a warning \u201cDo you want to allow this app from an unknown publisher to make changes to your device?\u201d, click Yes.\"}]},{\"@type\":\"HowToStep\",\"url\":\"https:\\\/\\\/www.winmail-dat.com\\\/blog\\\/2021\\\/11\\\/03\\\/how-to-open-winmail-dat-file-on-windows\\\/#how-to-step-1672338116459\",\"name\":\"If you receive a warning\",\"itemListElement\":[{\"@type\":\"HowToDirection\",\"text\":\"\u201cDo you want to allow this app from an unknown publisher to make changes to your device?\u201d click on Yes.\u201cWindows protected your PC\u201d just click on More Info and then on Run anyway\"}]},{\"@type\":\"HowToStep\",\"url\":\"https:\\\/\\\/www.winmail-dat.com\\\/blog\\\/2021\\\/11\\\/03\\\/how-to-open-winmail-dat-file-on-windows\\\/#how-to-step-1672338148668\",\"name\":\"Install the application\",\"itemListElement\":[{\"@type\":\"HowToDirection\",\"text\":\"Accept the License Agreement and click on install.\"}],\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/www.winmail-dat.com\\\/blog\\\/2021\\\/11\\\/03\\\/how-to-open-winmail-dat-file-on-windows\\\/#schema-image-05e5b3b5e2ebd1ccc0a1410a82bd2855\",\"url\":\"https:\\\/\\\/www.winmail-dat.com\\\/blog\\\/wp-content\\\/uploads\\\/2022\\\/12\\\/image-4.png\",\"contentUrl\":\"https:\\\/\\\/www.winmail-dat.com\\\/blog\\\/wp-content\\\/uploads\\\/2022\\\/12\\\/image-4.png\",\"width\":618,\"height\":483}},{\"@type\":\"HowToStep\",\"url\":\"https:\\\/\\\/www.winmail-dat.com\\\/blog\\\/2021\\\/11\\\/03\\\/how-to-open-winmail-dat-file-on-windows\\\/#how-to-step-1672338177837\",\"name\":\"Associate .dat files with the Winmail.dat Reader\",\"itemListElement\":[{\"@type\":\"HowToDirection\",\"text\":\"After the installation, run the Winmail.dat Reader. 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Windows","mainEntityOfPage":{"@id":"https:\/\/www.winmail-dat.com\/blog\/2021\/11\/03\/how-to-open-winmail-dat-file-on-windows\/#article"},"description":"Decoding a winmail.dat file on Windows","totalTime":"P0DT0H1M","step":[{"@type":"HowToStep","url":"https:\/\/www.winmail-dat.com\/blog\/2021\/11\/03\/how-to-open-winmail-dat-file-on-windows\/#how-to-step-1672337956798","name":"Download the Winmail.dat Reader","itemListElement":[{"@type":"HowToDirection","text":"In your web browser, open www.winmail-dat.com and click to download the Winmail.dat Reader for Windows"}],"image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/www.winmail-dat.com\/blog\/2021\/11\/03\/how-to-open-winmail-dat-file-on-windows\/#schema-image-a43bc09d7879e1214d53d565e2c49eb4","url":"https:\/\/www.winmail-dat.com\/blog\/wp-content\/uploads\/2022\/12\/image-5.png","contentUrl":"https:\/\/www.winmail-dat.com\/blog\/wp-content\/uploads\/2022\/12\/image-5.png","width":305,"height":81,"caption":"In your web browser, open www.winmail-dat.com and click to download the Winmail.dat Reader for Windows"}},{"@type":"HowToStep","url":"https:\/\/www.winmail-dat.com\/blog\/2021\/11\/03\/how-to-open-winmail-dat-file-on-windows\/#how-to-step-1672338104704","name":"Launch the Winmail.dat Reader installer","itemListElement":[{"@type":"HowToDirection","text":"Click on the downloaded file and select Open to launch Winmail.dat Reader installation. If you receive a warning \u201cDo you want to allow this app from an unknown publisher to make changes to your device?\u201d, click Yes."}]},{"@type":"HowToStep","url":"https:\/\/www.winmail-dat.com\/blog\/2021\/11\/03\/how-to-open-winmail-dat-file-on-windows\/#how-to-step-1672338116459","name":"If you receive a warning","itemListElement":[{"@type":"HowToDirection","text":"\u201cDo you want to allow this app from an unknown publisher to make changes to your device?\u201d click on Yes.\u201cWindows protected your PC\u201d just click on More Info and then on Run anyway"}]},{"@type":"HowToStep","url":"https:\/\/www.winmail-dat.com\/blog\/2021\/11\/03\/how-to-open-winmail-dat-file-on-windows\/#how-to-step-1672338148668","name":"Install the application","itemListElement":[{"@type":"HowToDirection","text":"Accept the License Agreement and click on install."}],"image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/www.winmail-dat.com\/blog\/2021\/11\/03\/how-to-open-winmail-dat-file-on-windows\/#schema-image-05e5b3b5e2ebd1ccc0a1410a82bd2855","url":"https:\/\/www.winmail-dat.com\/blog\/wp-content\/uploads\/2022\/12\/image-4.png","contentUrl":"https:\/\/www.winmail-dat.com\/blog\/wp-content\/uploads\/2022\/12\/image-4.png","width":618,"height":483}},{"@type":"HowToStep","url":"https:\/\/www.winmail-dat.com\/blog\/2021\/11\/03\/how-to-open-winmail-dat-file-on-windows\/#how-to-step-1672338177837","name":"Associate .dat files with the Winmail.dat Reader","itemListElement":[{"@type":"HowToDirection","text":"After the installation, run the Winmail.dat Reader. The first time you open it, you will be prompted with the settings window. Click on Associated .dat files with this application and press OK."}]},{"@type":"HowToStep","url":"https:\/\/www.winmail-dat.com\/blog\/2021\/11\/03\/how-to-open-winmail-dat-file-on-windows\/#how-to-step-1672338192637","name":"Open the winmail.dat file","itemListElement":[{"@type":"HowToDirection","text":"In your email client, open the winmail.dat file you\u2019ve received as an attachment. The Winmail.dat Reader will open automatically and decode the file for you."}]}],"inLanguage":"en-US"}]}},"_links":{"self":[{"href":"https:\/\/www.winmail-dat.com\/blog\/wp-json\/wp\/v2\/posts\/6","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.winmail-dat.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.winmail-dat.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.winmail-dat.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.winmail-dat.com\/blog\/wp-json\/wp\/v2\/comments?post=6"}],"version-history":[{"count":2,"href":"https:\/\/www.winmail-dat.com\/blog\/wp-json\/wp\/v2\/posts\/6\/revisions"}],"predecessor-version":[{"id":44,"href":"https:\/\/www.winmail-dat.com\/blog\/wp-json\/wp\/v2\/posts\/6\/revisions\/44"}],"wp:attachment":[{"href":"https:\/\/www.winmail-dat.com\/blog\/wp-json\/wp\/v2\/media?parent=6"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.winmail-dat.com\/blog\/wp-json\/wp\/v2\/categories?post=6"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.winmail-dat.com\/blog\/wp-json\/wp\/v2\/tags?post=6"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}