{"id":8975,"date":"2026-10-20T19:30:32","date_gmt":"2026-10-20T16:30:32","guid":{"rendered":"https:\/\/support.withsecure.com\/support-articles\/software-updater-update-installation-fails-with-error-signature-was-invalid-or-failed-to-validate-the-download-file\/"},"modified":"2026-10-20T19:30:32","modified_gmt":"2026-10-20T16:30:32","slug":"software-updater-update-installation-fails-with-error-signature-was-invalid-or-failed-to-validate-the-download-file","status":"publish","type":"support_article","link":"https:\/\/support.withsecure.com\/de\/support-articles\/software-updater-update-installation-fails-with-error-signature-was-invalid-or-failed-to-validate-the-download-file\/","title":{"rendered":"Software Updater update installation fails with error: &#8222;signature was invalid&#8220; or &#8222;failed to validate the download file&#8220;"},"content":{"rendered":"<h3>Issue:<\/h3>\n<p>Elements Endpoint Protection or Business Suite (Client Security or Server Security) Software Updater update installation fails with error: &quot;signature was invalid&quot; or &quot;failed to validate the download file&quot;<\/p>\n<p>This error occurs only for specific updates, for example:<\/p>\n<ul>\n<li>7-zip<\/li>\n<li>Zoom,<\/li>\n<li>Mozilla Firefox<\/li>\n<li>Google Chrome<\/li>\n<\/ul>\n<p>What do if Software Updater patch installation\u00a0<br \/>\u00a0<\/p>\n<h3>Resolution:<\/h3>\n<p>This error is shown usually when installation on unsigned updates has not been allowed from the settings.\u00a0<\/p>\n<p>For Elements Endpoint Protection Agent devices, you can allow unsigned updates from the Elements profile:<\/p>\n<ol>\n<li>Log in to the Elements Security Center portal<\/li>\n<li>Navigate to the <strong>Security configurations &gt; Profiles <\/strong>page<\/li>\n<li>Open the profile that is in use on the devices<\/li>\n<li>Go to the <strong>Software Updater <\/strong>settings page<\/li>\n<li>Scroll down to the <strong>Installation <\/strong>section<\/li>\n<li>Disable <strong>Install only signed updates\u00a0<\/strong><\/li>\n<li>Click <strong>Save profile\u00a0<\/strong><\/li>\n<\/ol>\n<p>For Client Security and Server Security devices, you can allow unsigned updates via the Policy Manager policies:<\/p>\n<ol>\n<li>Log in to the Policy Manager Console<\/li>\n<li>Select a host or policy domain from the domain tree<\/li>\n<li>Open the <strong>Settings <\/strong>tab<\/li>\n<li>Navigate to the <strong>Windows &gt; Software updater <\/strong>settings page<\/li>\n<li>In the <strong>General <\/strong>section, enable:\n<ol>\n<li><strong>Allow unsigned updates automatic installation<\/strong><\/li>\n<li><strong>Allow unsigned updates manual installation\u00a0<\/strong><\/li>\n<\/ol>\n<\/li>\n<li>Distribute the policy (Ctrl + D)<\/li>\n<\/ol>\n","protected":false},"excerpt":{"rendered":"<p>Elements Endpoint Protection or Business Suite (Client Security or Server Security) Software Updater update installation fails with error: &#8222;signature was invalid&#8220; or &#8222;failed to validate the download file&#8220;<\/p>\n<p>This error occurs only for specific updates, for example:<\/p>\n<p>7-zip<br \/>\nZoom,<br \/>\nMozilla Firefox<br \/>\nGoogle Chrome<\/p>\n<p>What do if Software Updater patch installation\u00a0<\/p>\n","protected":false},"template":"","support_article_product":[99],"class_list":["post-8975","support_article","type-support_article","status-publish","hentry"],"acf":{"source_foreign_id":"000007349","source_version":1,"source_system":"salesforce","source_date_updated":"2026-10-20 15:34:45","import_hash":"ec9d034ed765651c7580ef445483b49eb8e4cf26","vanilla_article_id":"","vanilla_url":"","vanilla_kb_id":"","vanilla_category_id":"","machine_translated":false,"reactions_helpful_yes":"","reactions_helpful_no":""},"_links":{"self":[{"href":"https:\/\/support.withsecure.com\/de\/wp-json\/wp\/v2\/support_article\/8975","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/support.withsecure.com\/de\/wp-json\/wp\/v2\/support_article"}],"about":[{"href":"https:\/\/support.withsecure.com\/de\/wp-json\/wp\/v2\/types\/support_article"}],"wp:attachment":[{"href":"https:\/\/support.withsecure.com\/de\/wp-json\/wp\/v2\/media?parent=8975"}],"wp:term":[{"taxonomy":"support_article_product","embeddable":true,"href":"https:\/\/support.withsecure.com\/de\/wp-json\/wp\/v2\/support_article_product?post=8975"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}