diff --git a/lib/Command/ExApp/Register.php b/lib/Command/ExApp/Register.php
index 2063e9ad..4035192c 100644
--- a/lib/Command/ExApp/Register.php
+++ b/lib/Command/ExApp/Register.php
@@ -72,9 +72,8 @@ protected function execute(InputInterface $input, OutputInterface $output): int
 			return 3;
 		}
 
-		$extractedDir = '';
 		$appInfo = $this->exAppService->getAppInfo(
-			$appId, $input->getOption('info-xml'), $input->getOption('json-info'), $extractedDir
+			$appId, $input->getOption('info-xml'), $input->getOption('json-info')
 		);
 		if (isset($appInfo['error'])) {
 			$this->logger->error($appInfo['error']);
@@ -175,13 +174,15 @@ protected function execute(InputInterface $input, OutputInterface $output): int
 			}
 		}
 
-		if ($daemonConfig->getAcceptsDeployId() !== $this->manualActions->getAcceptsDeployId()) {
-			$result = $this->exAppArchiveFetcher->installTranslations($appId, $extractedDir);
+		if (!empty($appInfo['external-app']['translations_folder'])) {
+			$result = $this->exAppArchiveFetcher->installTranslations($appId, $appInfo['external-app']['translations_folder']);
 			if ($result) {
 				$this->logger->error(sprintf('Failed to install translations for %s. Reason: %s', $appId, $result));
 				if ($outputConsole) {
 					$output->writeln(sprintf('Failed to install translations for %s. Reason: %s', $appId, $result));
 				}
+				$this->exAppService->unregisterExApp($appId);
+				return 3;
 			}
 		}
 
diff --git a/lib/Command/ExApp/Update.php b/lib/Command/ExApp/Update.php
index 3b004798..e6f83e24 100644
--- a/lib/Command/ExApp/Update.php
+++ b/lib/Command/ExApp/Update.php
@@ -56,9 +56,8 @@ protected function execute(InputInterface $input, OutputInterface $output): int
 		$outputConsole = !$input->getOption('silent');
 		$appId = $input->getArgument('appid');
 
-		$extractedDir = '';
 		$appInfo = $this->exAppService->getAppInfo(
-			$appId, $input->getOption('info-xml'), $input->getOption('json-info'), $extractedDir
+			$appId, $input->getOption('info-xml'), $input->getOption('json-info')
 		);
 		if (isset($appInfo['error'])) {
 			$this->logger->error($appInfo['error']);
@@ -121,8 +120,8 @@ protected function execute(InputInterface $input, OutputInterface $output): int
 			}
 		}
 
-		if ($daemonConfig->getAcceptsDeployId() !== $this->manualActions->getAcceptsDeployId()) {
-			$result = $this->exAppArchiveFetcher->installTranslations($appId, $extractedDir);
+		if (!empty($appInfo['external-app']['translations_folder'])) {
+			$result = $this->exAppArchiveFetcher->installTranslations($appId, $appInfo['external-app']['translations_folder']);
 			if ($result) {
 				$this->logger->error(sprintf('Failed to install translations for %s. Reason: %s', $appId, $result));
 				if ($outputConsole) {
diff --git a/lib/Fetcher/ExAppArchiveFetcher.php b/lib/Fetcher/ExAppArchiveFetcher.php
index 7a1ed8c9..f7cf022e 100644
--- a/lib/Fetcher/ExAppArchiveFetcher.php
+++ b/lib/Fetcher/ExAppArchiveFetcher.php
@@ -74,24 +74,20 @@ public function downloadInfoXml(array $exAppAppstoreData, string &$extractedDir)
 		return $infoXml;
 	}
 
-	public function installTranslations(string $appId, string $extractedDir): string {
-		if (!$extractedDir) {
-			return '';
-		}
-		if (!file_exists($extractedDir)) {
-			return 'Missing temp directory with ExApp files';
+	public function installTranslations(string $appId, string $dirTranslations): string {
+		if (!file_exists($dirTranslations)) {
+			return sprintf('Can not access directory: %s', $dirTranslations);
 		}
 		$writableAppPath = $this->getExAppFolder($appId);
 		if (!$writableAppPath) {
-			return 'Can not find writable apps path to perform install.';
+			return 'Can not find writable apps path to perform installation.';
 		}
 
-		$installL10NPath = $writableAppPath . '/' . $appId . '/l10n';
+		$installL10NPath = $writableAppPath . '/l10n';
 		if (file_exists($installL10NPath)) {
 			$this->rmdirr($installL10NPath);  // Remove old l10n folder and files if exists
 		}
-		// Move l10n folder from extracted temp to the app folder
-		rename($extractedDir . '/l10n', $installL10NPath);
+		$this->copyr($dirTranslations, $installL10NPath);
 		return '';
 	}
 
@@ -214,14 +210,7 @@ private function splitCerts(string $cert): array {
 		return $matches[0];
 	}
 
-	/**
-	 * Recursive deletion of folders
-	 *
-	 * @param string $dir path to the folder
-	 * @param bool $deleteSelf if set to false only the content of the folder will be deleted
-	 * @return bool
-	 */
-	public static function rmdirr(string $dir, bool $deleteSelf = true): bool {
+	public function rmdirr(string $dir, bool $deleteSelf = true): bool {
 		if (is_dir($dir)) {
 			$files = new RecursiveIteratorIterator(
 				new RecursiveDirectoryIterator($dir, RecursiveDirectoryIterator::SKIP_DOTS),
@@ -251,4 +240,20 @@ public static function rmdirr(string $dir, bool $deleteSelf = true): bool {
 
 		return !file_exists($dir);
 	}
+
+	public function copyr(string $src, string $dest): void {
+		if (is_dir($src)) {
+			if (!is_dir($dest)) {
+				mkdir($dest);
+			}
+			$files = scandir($src);
+			foreach ($files as $file) {
+				if ($file != "." && $file != "..") {
+					self::copyr("$src/$file", "$dest/$file");
+				}
+			}
+		} elseif (file_exists($src)) {
+			copy($src, $dest);
+		}
+	}
 }
diff --git a/lib/Middleware/ExAppUIL10NMiddleware.php b/lib/Middleware/ExAppUIL10NMiddleware.php
index 35876307..bc02fe92 100644
--- a/lib/Middleware/ExAppUIL10NMiddleware.php
+++ b/lib/Middleware/ExAppUIL10NMiddleware.php
@@ -58,7 +58,7 @@ public function beforeOutput(Controller $controller, string $methodName, string
 					$nonce = $this->nonceManager->getNonce();
 					$output = substr_replace($output, '<script nonce="'.$nonce.'" defer src="' . $l10nScriptSrc . '"></script>', $headPos, 0);
 				} catch (AppPathNotFoundException) {
-					$this->logger->error(sprintf('Can not find translations for %s ExApp.', $appId));
+					$this->logger->debug(sprintf('Can not find translations for %s ExApp.', $appId));
 				}
 			}
 		}
diff --git a/lib/Middleware/ExAppUiMiddleware.php b/lib/Middleware/ExAppUiMiddleware.php
index a91a646f..407a23f1 100644
--- a/lib/Middleware/ExAppUiMiddleware.php
+++ b/lib/Middleware/ExAppUiMiddleware.php
@@ -54,7 +54,7 @@ public function beforeOutput(Controller $controller, string $methodName, string
 					$nonce = $this->nonceManager->getNonce();
 					$output = substr_replace($output, '<script nonce="'.$nonce.'" defer src="' . $l10nScriptSrc . '"></script>', $headPos, 0);
 				} catch (AppPathNotFoundException) {
-					$this->logger->error(sprintf('Can not find translations for %s ExApp.', $appId));
+					$this->logger->debug(sprintf('Can not find translations for %s ExApp.', $appId));
 				}
 			}
 		}
diff --git a/lib/Service/ExAppService.php b/lib/Service/ExAppService.php
index c07c8277..871e1035 100644
--- a/lib/Service/ExAppService.php
+++ b/lib/Service/ExAppService.php
@@ -268,13 +268,14 @@ private function resetCaches(): void {
 		$this->settingsService->resetCacheEnabled();
 	}
 
-	public function getAppInfo(string $appId, ?string $infoXml, ?string $jsonInfo, string &$extractedDir): array {
+	public function getAppInfo(string $appId, ?string $infoXml, ?string $jsonInfo): array {
+		$extractedDir = '';
 		if ($jsonInfo !== null) {
 			$appInfo = json_decode($jsonInfo, true);
 			# fill 'id' if it is missing(this field was called `appid` in previous versions in json)
 			$appInfo['id'] = $appInfo['id'] ?? $appId;
 			# during manual install JSON can have all values at root level
-			foreach (['docker-install', 'scopes', 'system'] as $key) {
+			foreach (['docker-install', 'scopes', 'system', 'translations_folder'] as $key) {
 				if (isset($appInfo[$key])) {
 					$appInfo['external-app'][$key] = $appInfo[$key];
 					unset($appInfo[$key]);
@@ -298,6 +299,13 @@ public function getAppInfo(string $appId, ?string $infoXml, ?string $jsonInfo, s
 			if (isset($appInfo['external-app']['scopes']['value'])) {
 				$appInfo['external-app']['scopes'] = $appInfo['external-app']['scopes']['value'];
 			}
+			if ($extractedDir) {
+				if (file_exists($extractedDir . '/l10n')) {
+					$appInfo['translations_folder'] = $extractedDir . '/l10n';
+				} else {
+					$this->logger->info(sprintf('Application %s does not support translations', $appId));
+				}
+			}
 			# TO-DO: remove this in AppAPI 2.3.0
 			if (isset($appInfo['external-app']['scopes']['required']['value'])) {
 				$appInfo['external-app']['scopes'] = $appInfo['external-app']['scopes']['required']['value'];