{"id":4039,"date":"2026-06-08T18:02:25","date_gmt":"2026-06-08T15:02:25","guid":{"rendered":"https:\/\/support.withsecure.com\/en\/?post_type=support_article&#038;p=4039"},"modified":"2026-06-08T18:02:25","modified_gmt":"2026-06-08T15:02:25","slug":"withsecure-policy-manager-can-not-be-uninstalled-due-to-unable-to-load-the-uninstallation-plugin-dll-error-message","status":"publish","type":"support_article","link":"https:\/\/support.withsecure.com\/jp-ja\/support-articles\/withsecure-policy-manager-can-not-be-uninstalled-due-to-unable-to-load-the-uninstallation-plugin-dll-error-message\/","title":{"rendered":"WithSecure Policy Manager can not be uninstalled due to &#8220;Unable to load the uninstallation plugin DLL&#8221; error-message"},"content":{"rendered":"<h3>Issue:<\/h3>\n<p>When trying to uninstall WithSecure Policy Manager from a Windows Server, uninstallation fails due to &quot;Unable to load the uninstallation plugin DLL&quot; error-message.<\/p>\n<h3>Resolution:<\/h3>\n<p>This error message occurs, when the server hosts an old, unsupported version of WithSecure Policy Manager or the installation has been partially corrupted.<\/p>\n<p>There are two options to solve this issue:<\/p>\n<ol>\n<li>Install the <a href=\"https:\/\/www.withsecure.com\/en\/support\/product-support\/business-suite\/policy-manager\" target=\"_blank\" rel=\"noopener\">latest<\/a>\u00a0version of Policy Manager. After the upgrade, uninstallation should work correctly.<\/li>\n<li>Remove the old Policy Manager using the <a href=\"https:\/\/www.withsecure.com\/en\/support\/support-tools\" target=\"_blank\" rel=\"noopener\">Uninstallation tool<\/a>.<\/li>\n<\/ol>\n<p><b>NOTE:<\/b> The Uninstallation Tool should be\u00a0only used as a last resort and at your own risk.<\/p>\n<p>\u00a0<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Policy Manager can not be uninstalled, error message is &#8221; Unable to load the uninstallation plugin DLL&#8221;<\/p>\n","protected":false},"template":"","support_article_product":[106],"class_list":["post-4039","support_article","type-support_article","status-publish","hentry"],"acf":{"source_foreign_id":"000005616","source_version":3,"source_system":"salesforce","source_date_updated":"2026-06-08 15:02:25","import_hash":"097706766ae9a32b28537136fe3ad06aa386ec8f","vanilla_article_id":32276,"vanilla_url":"https:\/\/community.withsecure.com\/en\/kb\/articles\/32276-withsecure-policy-manager-can-not-be-uninstalled-due-to-unable-to-load-the-uninstallation-plugin-dll-error-message","vanilla_kb_id":30,"vanilla_category_id":103,"machine_translated":false,"reactions_helpful_yes":0,"reactions_helpful_no":0},"_links":{"self":[{"href":"https:\/\/support.withsecure.com\/jp-ja\/wp-json\/wp\/v2\/support_article\/4039","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/support.withsecure.com\/jp-ja\/wp-json\/wp\/v2\/support_article"}],"about":[{"href":"https:\/\/support.withsecure.com\/jp-ja\/wp-json\/wp\/v2\/types\/support_article"}],"wp:attachment":[{"href":"https:\/\/support.withsecure.com\/jp-ja\/wp-json\/wp\/v2\/media?parent=4039"}],"wp:term":[{"taxonomy":"support_article_product","embeddable":true,"href":"https:\/\/support.withsecure.com\/jp-ja\/wp-json\/wp\/v2\/support_article_product?post=4039"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}