{"id":10100,"date":"2026-01-15T11:09:15","date_gmt":"2026-01-15T10:09:15","guid":{"rendered":"https:\/\/test.antivirusedition.com\/?post_type=faq&p=10100"},"modified":"2026-01-15T11:09:15","modified_gmt":"2026-01-15T10:09:15","slug":"do-i-need-to-uninstall-my-old-antivirus-programme","status":"publish","type":"faq","link":"https:\/\/www.antivirusedition.com\/en\/faq\/dois-je-desinstaller-mon-ancien-antivirus\/","title":{"rendered":"Do I need to uninstall my old antivirus programme?"},"content":{"rendered":"

Yes, because Avast cannot work properly if another antivirus programme is installed on the same system. Using two or more antivirus programmes can cause problems and may make the operating system unstable.<\/p>\n

To uninstall a programme from your PC, go to Control Panel<\/strong> > Programmes<\/strong> > Uninstall a programme<\/strong> > Select the software you wish to uninstall > Click on Uninstall<\/strong>. Follow the instructions that appear on the screen.<\/p>\n

When the software is uninstalled, Restart your PC<\/strong> Then install Avast.<\/p>","protected":false},"excerpt":{"rendered":"

Oui, car Avast ne peut pas fonctionner correctement avec un autre antivirus install\u00e9 sur le m\u00eame syst\u00e8me. L\u2019utilisation de deux ou plusieurs programmes antivirus peut causer des probl\u00e8mes et le syst\u00e8me d\u2019exploitation peut devenir instable. Pour d\u00e9sinstaller un logiciel de votre PC, allez dans Panneau de configuration > Programmes > D\u00e9sinstaller un programme > S\u00e9lectionnez […]<\/p>\n","protected":false},"featured_media":0,"template":"","class_list":["post-10100","faq","type-faq","status-publish","hentry"],"acf":[],"yoast_head":"\nDois-je d\u00e9sinstaller mon ancien antivirus ? - Avast Antivirus Professionnel<\/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.antivirusedition.com\/en\/faq\/do-i-need-to-uninstall-my-old-antivirus-programme\/\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Dois-je d\u00e9sinstaller mon ancien antivirus ? - Avast Antivirus Professionnel\" \/>\n<meta property=\"og:description\" content=\"Oui, car Avast ne peut pas fonctionner correctement avec un autre antivirus install\u00e9 sur le m\u00eame syst\u00e8me. L\u2019utilisation de deux ou plusieurs programmes antivirus peut causer des probl\u00e8mes et le syst\u00e8me d\u2019exploitation peut devenir instable. Pour d\u00e9sinstaller un logiciel de votre PC, allez dans Panneau de configuration > Programmes > D\u00e9sinstaller un programme > S\u00e9lectionnez […]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.antivirusedition.com\/en\/faq\/do-i-need-to-uninstall-my-old-antivirus-programme\/\" \/>\n<meta property=\"og:site_name\" content=\"Avast Antivirus Professionnel\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Estimated reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.antivirusedition.com\\\/es\\\/preguntas-frecuentes\\\/tengo-que-desinstalar-mi-antiguo-antivirus\\\/\",\"url\":\"https:\\\/\\\/www.antivirusedition.com\\\/es\\\/preguntas-frecuentes\\\/tengo-que-desinstalar-mi-antiguo-antivirus\\\/\",\"name\":\"Dois-je d\u00e9sinstaller mon ancien antivirus ? - Avast Antivirus Professionnel\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/antivirusedition.com\\\/#website\"},\"datePublished\":\"2026-01-15T10:09:15+00:00\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/www.antivirusedition.com\\\/es\\\/preguntas-frecuentes\\\/tengo-que-desinstalar-mi-antiguo-antivirus\\\/#breadcrumb\"},\"inLanguage\":\"en-GB\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/www.antivirusedition.com\\\/es\\\/preguntas-frecuentes\\\/tengo-que-desinstalar-mi-antiguo-antivirus\\\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/www.antivirusedition.com\\\/es\\\/preguntas-frecuentes\\\/tengo-que-desinstalar-mi-antiguo-antivirus\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Accueil\",\"item\":\"https:\\\/\\\/antivirusedition.com\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"FAQ\",\"item\":\"https:\\\/\\\/www.antivirusedition.com\\\/en\\\/faq\\\/\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"Dois-je d\u00e9sinstaller mon ancien antivirus ?\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/antivirusedition.com\\\/#website\",\"url\":\"https:\\\/\\\/antivirusedition.com\\\/\",\"name\":\"Avast Pro Antivirus - Solutions antivirus Avast Professionnelles\",\"description\":\"\",\"publisher\":{\"@id\":\"https:\\\/\\\/antivirusedition.com\\\/#organization\"},\"alternateName\":\"Avast Pro Antivirus\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/antivirusedition.com\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-GB\"},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/antivirusedition.com\\\/#organization\",\"name\":\"Avast Pro Antivirus - Solutions antivirus Avast Professionnelles\",\"url\":\"https:\\\/\\\/antivirusedition.com\\\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-GB\",\"@id\":\"https:\\\/\\\/antivirusedition.com\\\/#\\\/schema\\\/logo\\\/image\\\/\",\"url\":\"https:\\\/\\\/www.antivirusedition.com\\\/wp-content\\\/uploads\\\/2025\\\/11\\\/avast-logo-default-1.svg\",\"contentUrl\":\"https:\\\/\\\/www.antivirusedition.com\\\/wp-content\\\/uploads\\\/2025\\\/11\\\/avast-logo-default-1.svg\",\"width\":296,\"height\":92,\"caption\":\"Avast Pro Antivirus - Solutions antivirus Avast Professionnelles\"},\"image\":{\"@id\":\"https:\\\/\\\/antivirusedition.com\\\/#\\\/schema\\\/logo\\\/image\\\/\"}}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Do I need to uninstall my old antivirus programme? - Avast Antivirus Professional","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.antivirusedition.com\/en\/faq\/do-i-need-to-uninstall-my-old-antivirus-programme\/","og_locale":"en_GB","og_type":"article","og_title":"Dois-je d\u00e9sinstaller mon ancien antivirus ? - Avast Antivirus Professionnel","og_description":"Oui, car Avast ne peut pas fonctionner correctement avec un autre antivirus install\u00e9 sur le m\u00eame syst\u00e8me. L\u2019utilisation de deux ou plusieurs programmes antivirus peut causer des probl\u00e8mes et le syst\u00e8me d\u2019exploitation peut devenir instable. Pour d\u00e9sinstaller un logiciel de votre PC, allez dans Panneau de configuration > Programmes > D\u00e9sinstaller un programme > S\u00e9lectionnez […]","og_url":"https:\/\/www.antivirusedition.com\/en\/faq\/do-i-need-to-uninstall-my-old-antivirus-programme\/","og_site_name":"Avast Antivirus Professionnel","twitter_card":"summary_large_image","twitter_misc":{"Estimated reading time":"1 minute"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/www.antivirusedition.com\/es\/preguntas-frecuentes\/tengo-que-desinstalar-mi-antiguo-antivirus\/","url":"https:\/\/www.antivirusedition.com\/es\/preguntas-frecuentes\/tengo-que-desinstalar-mi-antiguo-antivirus\/","name":"Do I need to uninstall my old antivirus programme? - Avast Antivirus Professional","isPartOf":{"@id":"https:\/\/antivirusedition.com\/#website"},"datePublished":"2026-01-15T10:09:15+00:00","breadcrumb":{"@id":"https:\/\/www.antivirusedition.com\/es\/preguntas-frecuentes\/tengo-que-desinstalar-mi-antiguo-antivirus\/#breadcrumb"},"inLanguage":"en-GB","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.antivirusedition.com\/es\/preguntas-frecuentes\/tengo-que-desinstalar-mi-antiguo-antivirus\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/www.antivirusedition.com\/es\/preguntas-frecuentes\/tengo-que-desinstalar-mi-antiguo-antivirus\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Accueil","item":"https:\/\/antivirusedition.com\/"},{"@type":"ListItem","position":2,"name":"FAQ","item":"https:\/\/www.antivirusedition.com\/en\/faq\/"},{"@type":"ListItem","position":3,"name":"Dois-je d\u00e9sinstaller mon ancien antivirus ?"}]},{"@type":"WebSite","@id":"https:\/\/antivirusedition.com\/#website","url":"https:\/\/antivirusedition.com\/","name":"Avast Pro Antivirus - Avast Professional antivirus solutions","description":"","publisher":{"@id":"https:\/\/antivirusedition.com\/#organization"},"alternateName":"Avast Pro Antivirus","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/antivirusedition.com\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-GB"},{"@type":"Organization","@id":"https:\/\/antivirusedition.com\/#organization","name":"Avast Pro Antivirus - Avast Professional antivirus solutions","url":"https:\/\/antivirusedition.com\/","logo":{"@type":"ImageObject","inLanguage":"en-GB","@id":"https:\/\/antivirusedition.com\/#\/schema\/logo\/image\/","url":"https:\/\/www.antivirusedition.com\/wp-content\/uploads\/2025\/11\/avast-logo-default-1.svg","contentUrl":"https:\/\/www.antivirusedition.com\/wp-content\/uploads\/2025\/11\/avast-logo-default-1.svg","width":296,"height":92,"caption":"Avast Pro Antivirus - Solutions antivirus Avast Professionnelles"},"image":{"@id":"https:\/\/antivirusedition.com\/#\/schema\/logo\/image\/"}}]}},"_links":{"self":[{"href":"https:\/\/www.antivirusedition.com\/en\/wp-json\/wp\/v2\/faq\/10100","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.antivirusedition.com\/en\/wp-json\/wp\/v2\/faq"}],"about":[{"href":"https:\/\/www.antivirusedition.com\/en\/wp-json\/wp\/v2\/types\/faq"}],"wp:attachment":[{"href":"https:\/\/www.antivirusedition.com\/en\/wp-json\/wp\/v2\/media?parent=10100"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}