diff --git a/distro/changelog.xml b/distro/changelog.xml
index 63967a9..7aa9a31 100644
--- a/distro/changelog.xml
+++ b/distro/changelog.xml
@@ -4,6 +4,8 @@
 		date="${buildDate}">
 		<Change>[Incident #16285] Bug fixing
 		</Change>
+		<Change>[Feature #13327] Checking permission before uploading
+		</Change>
 	</Changeset>
 	<Changeset
 		component="org.gcube.portlets-widgets.workspace-uploader.2-0-1"
diff --git a/src/main/java/org/gcube/portlets/widgets/workspaceuploader/server/WorkspaceUploadServletStream.java b/src/main/java/org/gcube/portlets/widgets/workspaceuploader/server/WorkspaceUploadServletStream.java
index d080e61..73edd5d 100644
--- a/src/main/java/org/gcube/portlets/widgets/workspaceuploader/server/WorkspaceUploadServletStream.java
+++ b/src/main/java/org/gcube/portlets/widgets/workspaceuploader/server/WorkspaceUploadServletStream.java
@@ -38,6 +38,7 @@ import org.gcube.common.portal.PortalContext;
 import org.gcube.common.storagehub.model.items.FolderItem;
 import org.gcube.common.storagehub.model.items.Item;
 import org.gcube.common.storagehubwrapper.server.StorageHubWrapper;
+import org.gcube.common.storagehubwrapper.server.tohl.Workspace;
 import org.gcube.common.storagehubwrapper.shared.tohl.WorkspaceFolder;
 import org.gcube.common.storagehubwrapper.shared.tohl.WorkspaceItem;
 import org.gcube.common.storagehubwrapper.shared.tohl.exceptions.InsufficientPrivilegesException;
@@ -45,6 +46,7 @@ import org.gcube.common.storagehubwrapper.shared.tohl.exceptions.InternalErrorEx
 import org.gcube.common.storagehubwrapper.shared.tohl.exceptions.ItemAlreadyExistException;
 import org.gcube.common.storagehubwrapper.shared.tohl.exceptions.ItemNotFoundException;
 import org.gcube.common.storagehubwrapper.shared.tohl.exceptions.WrongItemTypeException;
+import org.gcube.common.storagehubwrapper.shared.tohl.impl.WorkspaceSharedFolder;
 import org.gcube.portlets.widgets.workspaceuploader.client.ConstantsWorkspaceUploader;
 import org.gcube.portlets.widgets.workspaceuploader.server.notification.NotificationsWorkspaceUploader;
 import org.gcube.portlets.widgets.workspaceuploader.server.notification.NotificationsWorkspaceUploaderProducer;
@@ -408,7 +410,7 @@ public class WorkspaceUploadServletStream extends HttpServlet implements Servlet
 			sendError(response, "Internal error: No client upload key found");
 			return;
 		}
-
+		
 		//CLIENT UPLOAD IS THE KEY
 //		WorkspaceUploaderItem workspaceUploader = createNewWorkspaceUploader(clientUploadKey,destinationId,fileName);
 //		saveWorkspaceUploaderStatus(workspaceUploader, UPLOAD_STATUS.WAIT, "Uploading "+fileName+" at 0%", request.getSession());
@@ -449,9 +451,11 @@ public class WorkspaceUploadServletStream extends HttpServlet implements Servlet
 		}
 
 		WorkspaceItem destinationItem = null;
+		Workspace workspace = null;
 		try {
 			logger.debug("getWorkspaceItem destination id: "+destinationId+" from HL");
-			destinationItem = storageHubWrapper.getWorkspace().getItem(destinationId);
+			workspace = storageHubWrapper.getWorkspace();
+			destinationItem = workspace.getItem(destinationId);
 		} catch (ItemNotFoundException | InternalErrorException e) {
 			logger.error("Error, no destination folder found", e);
 			saveWorkspaceUploaderStatus(workspaceUploader, UPLOAD_STATUS.FAILED, "An error occurred during upload: "+fileName+". No destination folder found", request.getSession());
@@ -472,6 +476,23 @@ public class WorkspaceUploadServletStream extends HttpServlet implements Servlet
 		}
 
 		final WorkspaceFolder destinationFolder = (WorkspaceFolder) destinationItem;
+		
+		if(destinationFolder.isShared()) {
+			try {
+				WorkspaceItem rootSharedFolder = workspace.getRootSharedFolder(destinationFolder.getId());
+				
+				//TODO RETRIEVE USERS BELONGING TO SHARE
+				//TODO RETRIEVE ACL
+				
+				if(rootSharedFolder instanceof WorkspaceSharedFolder) {
+					
+				}
+				
+			} catch (Exception e) {
+				e.printStackTrace();
+			}
+		}
+		
 
 		try {
 			//Removing path from fileName
diff --git a/src/main/java/org/gcube/portlets/widgets/workspaceuploader/server/upload/WorkspaceUploaderMng.java b/src/main/java/org/gcube/portlets/widgets/workspaceuploader/server/upload/WorkspaceUploaderMng.java
index e8dceea..ebffe22 100644
--- a/src/main/java/org/gcube/portlets/widgets/workspaceuploader/server/upload/WorkspaceUploaderMng.java
+++ b/src/main/java/org/gcube/portlets/widgets/workspaceuploader/server/upload/WorkspaceUploaderMng.java
@@ -9,6 +9,7 @@ import java.io.InputStream;
 import javax.servlet.http.HttpServletRequest;
 import javax.servlet.http.HttpSession;
 
+import org.gcube.common.storagehub.model.exceptions.UserNotAuthorizedException;
 import org.gcube.common.storagehubwrapper.server.StorageHubWrapper;
 import org.gcube.common.storagehubwrapper.shared.tohl.WorkspaceFolder;
 import org.gcube.common.storagehubwrapper.shared.tohl.WorkspaceItem;
@@ -73,15 +74,9 @@ public class WorkspaceUploaderMng {
 		WorkspaceItem createdItem = null;
 
 		try{
+			
 			Long startTime = WorkspaceUploadServletStream.printStartTime();
-//			if(!isOvewrite){
-//				logger.debug("Calling HL createExternalFile - [itemName: "+itemName+", contentType: "+contentType+"]");
-//				createdItem = wa.createExternalFile(destinationFolder, itemName, "", contentType, uploadFile);
-//			}
-//			else{
-//				createdItem  = overwriteItem(wa, itemName, uploadFile, destinationFolder); 	//CASE OVERWRITE
-//			}
-
+			//UPLOAD
 			createdItem = storageWrapper.getWorkspace().uploadFile(destinationFolder.getId(), uploadFile, itemName, "");
 
 			if(createdItem!=null){
@@ -119,6 +114,7 @@ public class WorkspaceUploaderMng {
 			} catch (Exception e1) {
 				logger.error("Error during WorkspaceUploaderItem session update: ",e1);
 			}
+		//TODO TO BE REMOVED
 		} catch (InternalErrorException e) {
 			logger.error("Error during upload: ",e);
 			workspaceUploader.setStatusDescription("Error on uploading: "+itemName+". "+e.getMessage());
@@ -128,7 +124,7 @@ public class WorkspaceUploaderMng {
 			} catch (Exception e1) {
 				logger.error("Error during WorkspaceUploaderItem session update: ",e1);
 			}
-
+		//TODO TO BE REMOVED
 		} catch (InsufficientPrivilegesException | ItemAlreadyExistException  | WorkspaceFolderNotFoundException | WrongDestinationException e) {
 			logger.error("Error during file uploading: ",e);
 			workspaceUploader.setUploadStatus(UPLOAD_STATUS.FAILED);
@@ -156,6 +152,22 @@ public class WorkspaceUploaderMng {
 			} catch (Exception e1) {
 				logger.error("Error during WorkspaceUploaderItem session update: ",e1);
 			}
+		
+		//TO STORAGEHUB EXCEPTION
+		}catch(Exception e){
+			logger.error("Error occurred uploading the file: ",e);
+			workspaceUploader.setUploadStatus(UPLOAD_STATUS.FAILED);
+			workspaceUploader.setStatusDescription("An error occurred uploading the file: "+itemName+". "+e.getMessage());
+			
+			if (e instanceof UserNotAuthorizedException){
+				String folderName = destinationFolder.getName();
+				workspaceUploader.setStatusDescription("You have not permission to upload in the folder: "+folderName);
+			}
+			try {
+				WsUtil.putWorkspaceUploaderInSession(httpSession, workspaceUploader);
+			} catch (Exception e1) {
+				logger.error("Error during WorkspaceUploaderItem session update: ",e1);
+			}
 		}finally{
 			try {
 //				StreamUtils.deleteTempFile(uploadFile);
@@ -231,6 +243,7 @@ public class WorkspaceUploaderMng {
 			} catch (Exception e1) {
 				logger.error("Error during WorkspaceUploaderItem session update: ",e1);
 			}
+		//TODO TO BE REMOVED
 		} catch (InternalErrorException e) {
 			logger.error("Error during upload: ",e);
 			workspaceUploader.setStatusDescription("Error on uploading: "+itemName+". "+e.getMessage());
@@ -240,7 +253,7 @@ public class WorkspaceUploaderMng {
 			} catch (Exception e1) {
 				logger.error("Error during WorkspaceUploaderItem session update: ",e1);
 			}
-
+		//TODO TO BE REMOVED
 		} catch (InsufficientPrivilegesException | ItemAlreadyExistException  | WorkspaceFolderNotFoundException | WrongDestinationException e) {
 			logger.error("Error during file uploading: ",e);
 			workspaceUploader.setUploadStatus(UPLOAD_STATUS.FAILED);
@@ -256,7 +269,7 @@ public class WorkspaceUploaderMng {
 			} catch (Exception e1) {
 				logger.error("Error during WorkspaceUploaderItem session update: ",e1);
 			}
-			//IS unreachable
+		//IS unreachable
 		}catch(UploadCanceledException e){
 			logger.info("UploadCanceledException thrown by client..");
 			workspaceUploader.setStatusDescription("Aborted upload: "+itemName);
@@ -268,6 +281,22 @@ public class WorkspaceUploaderMng {
 			} catch (Exception e1) {
 				logger.error("Error during WorkspaceUploaderItem session update: ",e1);
 			}
+
+		//TO STORAGEHUB EXCEPTION
+		}catch(Exception e){
+			logger.error("Error occurred uploading the archive: ",e);
+			workspaceUploader.setUploadStatus(UPLOAD_STATUS.FAILED);
+			workspaceUploader.setStatusDescription("An error occurred uploading the archive: "+itemName+". "+e.getMessage());
+			
+			if (e instanceof UserNotAuthorizedException){
+				String folderName = destinationFolder.getName();
+				workspaceUploader.setStatusDescription("You have not permission to upload in the folder: "+folderName);
+			}
+			try {
+				WsUtil.putWorkspaceUploaderInSession(httpSession, workspaceUploader);
+			} catch (Exception e1) {
+				logger.error("Error during WorkspaceUploaderItem session update: ",e1);
+			}
 		}finally{
 			try {
 //				StreamUtils.deleteTempFile(uploadFile);
@@ -300,12 +329,7 @@ public class WorkspaceUploaderMng {
  */
 	public static WorkspaceUploaderItem uploadFile(StorageHubWrapper storageWrapper, GCubeUser currUser, String scopeGroupId, HttpServletRequest request, WorkspaceUploaderItem workspaceUploader, HttpSession httpSession, String itemName, InputStream file, WorkspaceFolder destinationFolder, String contentType, boolean isOverwrite, long totolaBytes) throws Exception {
 
-		try {
-			return createWorkspaceUploaderFile(storageWrapper, currUser, scopeGroupId, request, workspaceUploader, httpSession, isOverwrite, file, itemName, destinationFolder, contentType, totolaBytes);
-		} catch (Exception e) {
-			logger.error("Error when uploading file to HL : ",e);
-			throw new Exception("An error occurred during upload: "+itemName+". Try again");
-		}
+		return createWorkspaceUploaderFile(storageWrapper, currUser, scopeGroupId, request, workspaceUploader, httpSession, isOverwrite, file, itemName, destinationFolder, contentType, totolaBytes);
 	}
 
 
@@ -326,13 +350,7 @@ public class WorkspaceUploaderMng {
 	 */
 	public static WorkspaceUploaderItem uploadArchive(StorageHubWrapper storageWrapper, GCubeUser currUser, String scopeGroupId, WorkspaceUploaderItem workspaceUploader, HttpServletRequest request, String itemName, InputStream file, WorkspaceFolder destinationFolder, long totalBytes) throws Exception {
 
-		try {
-			return createWorkspaceUploaderArchive(storageWrapper, currUser, scopeGroupId, workspaceUploader, request, file, itemName, destinationFolder, totalBytes);
-
-		} catch (Exception e) {
-			logger.error("Error when uploading Archive to HL creation: ",e);
-			throw new Exception("An error occurred during upload: "+itemName+". Try again");
-		}
+		return createWorkspaceUploaderArchive(storageWrapper, currUser, scopeGroupId, workspaceUploader, request, file, itemName, destinationFolder, totalBytes);
 	}
 
 	/**