diff --git a/client/DigiDoc.cpp b/client/DigiDoc.cpp
index 1088d27d7..4cb4f683f 100644
--- a/client/DigiDoc.cpp
+++ b/client/DigiDoc.cpp
@@ -453,6 +453,13 @@ bool DigiDoc::isAsicS() const
 		});
 }
 
+bool DigiDoc::isCades() const
+{
+	return std::any_of(m_signatures.cbegin(), m_signatures.cend(), [](const DigiDocSignature &s) {
+		return s.profile().contains(QLatin1String("CADES"), Qt::CaseInsensitive);
+	});
+}
+
 bool DigiDoc::isPDF() const
 {
 	return b && b->mediaType() == "application/pdf";
@@ -461,7 +468,7 @@ bool DigiDoc::isModified() const { return modified; }
 
 bool DigiDoc::isSupported() const
 {
-	return b && b->mediaType() == "application/vnd.etsi.asic-e+zip";
+	return b && b->mediaType() == "application/vnd.etsi.asic-e+zip" && !isCades();
 }
 
 QString DigiDoc::mediaType() const
diff --git a/client/DigiDoc.h b/client/DigiDoc.h
index e9c72b8ad..fa4ba4ab3 100644
--- a/client/DigiDoc.h
+++ b/client/DigiDoc.h
@@ -127,6 +127,7 @@ class DigiDoc: public QObject
 	DocumentModel *documentModel() const;
 	QString fileName() const;
 	bool isAsicS() const;
+	bool isCades() const;
 	bool isPDF() const;
 	bool isModified() const;
 	bool isSupported() const;
diff --git a/client/common_enums.h b/client/common_enums.h
index cf4078d3c..b37184c2f 100644
--- a/client/common_enums.h
+++ b/client/common_enums.h
@@ -95,6 +95,7 @@ enum WarningType {
     UnknownSignatureWarning,
     UnknownTimestampWarning,
     UnsupportedAsicSWarning,
+    UnsupportedAsicCadesWarning,
     UnsupportedDDocWarning,
     EmptyFileWarning,
 };
diff --git a/client/translations/en.ts b/client/translations/en.ts
index 11563592c..e62190573 100644
--- a/client/translations/en.ts
+++ b/client/translations/en.ts
@@ -3292,6 +3292,10 @@ Additional licenses and components</translation>
         <source>This ASiC-S container contains XAdES signature. You are not allowed to add or remove signatures to this container.</source>
         <translation>This ASiC-S container contains XAdES signature. You are not allowed to add or remove signatures to this container.</translation>
     </message>
+    <message>
+        <source>The current file is a ASiC container with CAdES signatures that is not supported currently. You are not allowed to add or remove signatures to this container.</source>
+        <translation>The current file is a ASiC container with CAdES signatures that is not supported currently. You are not allowed to add or remove signatures to this container.</translation>
+    </message>
 </context>
 <context>
     <name>WarningRibbon</name>
diff --git a/client/translations/et.ts b/client/translations/et.ts
index 98a9d3dc3..ceb77dc49 100644
--- a/client/translations/et.ts
+++ b/client/translations/et.ts
@@ -3292,6 +3292,10 @@ Täiendavad litsentsid ja komponendid</translation>
         <source>This ASiC-S container contains XAdES signature. You are not allowed to add or remove signatures to this container.</source>
         <translation>Tegemist on XAdES allkirja sisalduva ASiC-S ümbrikuga. Sellele ümbrikule ei saa allkirja lisada ega eemaldada.</translation>
     </message>
+    <message>
+        <source>The current file is a ASiC container with CAdES signatures that is not supported currently. You are not allowed to add or remove signatures to this container.</source>
+        <translation>Tegemist on CADES allkirja sisalduva ümbrikuga. Sellele ümbrikule ei saa allkirja lisada ega eemaldada.</translation>
+    </message>
 </context>
 <context>
     <name>WarningRibbon</name>
diff --git a/client/translations/ru.ts b/client/translations/ru.ts
index e2d739f7f..1ef48d636 100644
--- a/client/translations/ru.ts
+++ b/client/translations/ru.ts
@@ -3297,6 +3297,10 @@ Additional licenses and components</source>
         <source>This ASiC-S container contains XAdES signature. You are not allowed to add or remove signatures to this container.</source>
         <translation>Речь идет о конверте ASiC-S, содержащемся в подписи XAdES. К данному контейнеру нельзя добавить или удалить из него подпись.</translation>
     </message>
+    <message>
+        <source>The current file is a ASiC container with CAdES signatures that is not supported currently. You are not allowed to add or remove signatures to this container.</source>
+        <translation>Этот контейнер содержит подпись КАДЕС. К данному контейнеру нельзя добавить или удалить из него подпись.</translation>
+    </message>
 </context>
 <context>
     <name>WarningRibbon</name>
diff --git a/client/widgets/ContainerPage.cpp b/client/widgets/ContainerPage.cpp
index 272c0aed9..dba8bc5a1 100644
--- a/client/widgets/ContainerPage.cpp
+++ b/client/widgets/ContainerPage.cpp
@@ -334,6 +334,8 @@ void ContainerPage::transition(DigiDoc* container)
 		emit warning(UnsupportedDDocWarning);
 	if(container->isAsicS())
 		emit warning(UnsupportedAsicSWarning);
+	if(container->isCades())
+		emit warning(UnsupportedAsicCadesWarning);
 
 	hasEmptyFile = false;
 	for (auto i = 0; i < container->documentModel()->rowCount(); i++)
diff --git a/client/widgets/WarningItem.cpp b/client/widgets/WarningItem.cpp
index d59abce8e..b62d28266 100644
--- a/client/widgets/WarningItem.cpp
+++ b/client/widgets/WarningItem.cpp
@@ -141,8 +141,16 @@ void WarningItem::lookupWarning()
 		warnText.details = tr("More information");
 		warnText.page = ria::qdigidoc4::SignDetails;
 		break;
+	case ria::qdigidoc4::UnsupportedAsicCadesWarning:
+		warnText.text = tr("The current file is a ASiC container with CAdES signatures that is not supported currently. "
+			"You are not allowed to add or remove signatures to this container.");
+		warnText.url = tr("https://www.id.ee/en/article/digidoc-container-format-life-cycle-2/");
+		warnText.details = tr("More information");
+		warnText.page = ria::qdigidoc4::SignDetails;
+		break;
 	case ria::qdigidoc4::UnsupportedDDocWarning:
-		warnText.text = tr("The current file is a DigiDoc container that is not supported officially any longer. You are not allowed to add or remove signatures to this container.");
+		warnText.text = tr("The current file is a DigiDoc container that is not supported officially any longer. "
+			"You are not allowed to add or remove signatures to this container.");
 		warnText.url = tr("https://www.id.ee/en/article/digidoc-container-format-life-cycle-2/");
 		warnText.details = tr("More information");
 		warnText.page = ria::qdigidoc4::SignDetails;