diff --git a/lib/Controller/ApiController.php b/lib/Controller/ApiController.php
index 049998b1c..e0cbc228a 100644
--- a/lib/Controller/ApiController.php
+++ b/lib/Controller/ApiController.php
@@ -268,6 +268,17 @@ public function updateForm(int $formId, array $keyValuePairs): DataResponse {
 		]);
 
 		$form = $this->getFormIfAllowed($formId);
+		if (
+			$this->formsService->isFormArchived($form)
+			&& !(
+				sizeof($keyValuePairs) === 1
+				&& key_exists('state', $keyValuePairs)
+				&& $keyValuePairs['state'] === Constants::FORM_STATE_CLOSED
+			)
+		) {
+			$this->logger->debug('This form is archived and can not be modified except to change state to closed.');
+			throw new OCSForbiddenException('This form is archived and can not be modified except to change state to closed.');
+		}
 
 		// Don't allow empty array
 		if (sizeof($keyValuePairs) === 0) {
diff --git a/lib/Controller/ShareApiController.php b/lib/Controller/ShareApiController.php
index 9bdd3b47b..067c171a1 100644
--- a/lib/Controller/ShareApiController.php
+++ b/lib/Controller/ShareApiController.php
@@ -123,6 +123,11 @@ public function newShare(int $formId, int $shareType, string $shareWith = '', ar
 			throw new OCSNotFoundException('Could not find form');
 		}
 
+		if ($this->formsService->isFormArchived($form)) {
+			$this->logger->debug('This form is archived and can not be modified');
+			throw new OCSForbiddenException('This form is archived and can not be modified');
+		}
+
 		// Check for permission to share form
 		if ($form->getOwnerId() !== $this->currentUser->getUID()) {
 			$this->logger->debug('This form is not owned by the current user');
@@ -243,6 +248,11 @@ public function updateShare(int $formId, int $shareId, array $keyValuePairs): Da
 			throw new OCSNotFoundException('Could not find share');
 		}
 
+		if ($this->formsService->isFormArchived($form)) {
+			$this->logger->debug('This form is archived and can not be modified');
+			throw new OCSForbiddenException('This form is archived and can not be modified');
+		}
+
 		if ($formId !== $formShare->getFormId()) {
 			$this->logger->debug('This share doesn\'t belong to the given Form');
 			throw new OCSBadRequestException('Share doesn\'t belong to given Form');
@@ -336,6 +346,11 @@ public function deleteShare(int $formId, int $shareId): DataResponse {
 			throw new OCSNotFoundException('Could not find share');
 		}
 
+		if ($this->formsService->isFormArchived($form)) {
+			$this->logger->debug('This form is archived and can not be modified');
+			throw new OCSForbiddenException('This form is archived and can not be modified');
+		}
+
 		if ($formId !== $share->getFormId()) {
 			$this->logger->debug('This share doesn\'t belong to the given Form');
 			throw new OCSBadRequestException('Share doesn\'t belong to given Form');