diff --git a/Common/config/default.json b/Common/config/default.json
index e33a8ef4..d681de7b 100644
--- a/Common/config/default.json
+++ b/Common/config/default.json
@@ -103,8 +103,8 @@
 		"storageFolderName": "files",
 		"cacheFolderName": "data",
 		"urlExpires": 604800,
-		"accessKeyId": "AKID",
-		"secretAccessKey": "SECRET",
+		"accessKeyId": "",
+		"secretAccessKey": "",
 		"sslEnabled": false,
 		"s3ForcePathStyle": true,
 		"externalHost": ""
diff --git a/Common/sources/storage-s3.js b/Common/sources/storage-s3.js
index 07ae0c67..d45ce946 100644
--- a/Common/sources/storage-s3.js
+++ b/Common/sources/storage-s3.js
@@ -63,12 +63,14 @@ function getS3Client(storageCfg) {
    */
   let configS3 = {
     region: storageCfg.region,
-    endpoint: storageCfg.endpoint,
-    credentials : {
+    endpoint: storageCfg.endpoint
+  };
+  if (storageCfg.accessKeyId && storageCfg.secretAccessKey) {
+    configS3.credentials = {
       accessKeyId: storageCfg.accessKeyId,
       secretAccessKey: storageCfg.secretAccessKey
     }
-  };
+  }
 
   if (configS3.endpoint) {
     configS3.tls = storageCfg.sslEnabled;
diff --git a/DocService/sources/DocsCoServer.js b/DocService/sources/DocsCoServer.js
index 4ca47102..febe2ce6 100644
--- a/DocService/sources/DocsCoServer.js
+++ b/DocService/sources/DocsCoServer.js
@@ -3111,7 +3111,7 @@ exports.install = function(server, callbackFunction) {
     let addRes = await editorData.addLocksNX(ctx, docId, locks);
     let documentLocks = addRes.allLocks;
     let isAllAdded = Object.keys(addRes.lockConflict).length === 0;
-    if (!isAllAdded || !fCheckLock(ctx, docId, documentLocks, locks, arrayBlocks, userId)) {
+    if (!isAllAdded && !fCheckLock(ctx, docId, documentLocks, locks, arrayBlocks, userId)) {
       //remove new locks
       let toRemove = {};
       for (let lockId in locks) {
diff --git a/DocService/sources/server.js b/DocService/sources/server.js
index 150dca50..2053a57e 100644
--- a/DocService/sources/server.js
+++ b/DocService/sources/server.js
@@ -394,8 +394,13 @@ docsCoServer.install(server, () => {
 		});
 	});
 	app.get('/document_editor_service_worker.js', apicache.middleware("5 min"), async (req, res) => {
-		//make handler only for development version
-		res.sendFile(path.resolve("../../sdkjs/common/serviceworker/document_editor_service_worker.js"));
+		let staticContent = config.get('services.CoAuthoring.server.static_content');
+		if (staticContent['/sdkjs']) {
+			//make handler only for development version
+			res.sendFile(path.resolve(staticContent['/sdkjs'].path + "/common/serviceworker/document_editor_service_worker.js"));
+		} else {
+			res.sendStatus(404);
+		}
 	});
 	app.use((err, req, res, next) => {
 		let ctx = new operationContext.Context();
diff --git a/DocService/sources/wopiClient.js b/DocService/sources/wopiClient.js
index ce72847f..2851b62f 100644
--- a/DocService/sources/wopiClient.js
+++ b/DocService/sources/wopiClient.js
@@ -383,7 +383,7 @@ async function getWopiFileUrl(ctx, fileInfo, userAuth) {
   } else if (fileInfo?.TemplateSource) {
     url = fileInfo.TemplateSource;
   } else if (userAuth) {
-    url = `${userAuth.wopiSrc}/contents?access_token=${userAuth.access_token}`;
+    url = `${userAuth.wopiSrc}/contents?access_token=${encodeURIComponent(userAuth.access_token)}`;
     await fillStandardHeaders(ctx, headers, url, userAuth.access_token);
   }
   ctx.logger.debug('getWopiFileUrl url=%s; headers=%j', url, headers);
@@ -740,7 +740,7 @@ function putFile(ctx, wopiParams, data, dataStream, dataSize, userLastChangeId,
       }
       let fileInfo = wopiParams.commonInfo.fileInfo;
       let userAuth = wopiParams.userAuth;
-      let uri = `${userAuth.wopiSrc}/contents?access_token=${userAuth.access_token}`;
+      let uri = `${userAuth.wopiSrc}/contents?access_token=${encodeURIComponent(userAuth.access_token)}`;
       let filterStatus = yield checkIpFilter(ctx, uri);
       if (0 !== filterStatus) {
         return postRes;
@@ -785,7 +785,7 @@ function putRelativeFile(ctx, wopiSrc, access_token, data, dataStream, dataSize,
       ctx.logger.info('wopi putRelativeFile start');
       const tenCallbackRequestTimeout = ctx.getCfg('services.CoAuthoring.server.callbackRequestTimeout', cfgCallbackRequestTimeout);
 
-      let uri = `${wopiSrc}?access_token=${access_token}`;
+      let uri = `${wopiSrc}?access_token=${encodeURIComponent(access_token)}`;
       let filterStatus = yield checkIpFilter(ctx, uri);
       if (0 !== filterStatus) {
         return res;
@@ -825,7 +825,7 @@ function renameFile(ctx, wopiParams, name) {
       }
       let fileInfo = wopiParams.commonInfo.fileInfo;
       let userAuth = wopiParams.userAuth;
-      let uri = `${userAuth.wopiSrc}?access_token=${userAuth.access_token}`;
+      let uri = `${userAuth.wopiSrc}?access_token=${encodeURIComponent(userAuth.access_token)}`;
       let filterStatus = yield checkIpFilter(ctx, uri);
       if (0 !== filterStatus) {
         return res;
@@ -909,7 +909,7 @@ function checkFileInfo(ctx, wopiSrc, access_token, opt_sc) {
       ctx.logger.info('wopi checkFileInfo start');
       const tenDownloadTimeout = ctx.getCfg('FileConverter.converter.downloadTimeout', cfgDownloadTimeout);
 
-      let uri = `${encodeURI(wopiSrc)}?access_token=${encodeURIComponent(access_token)}`;
+      let uri = `${wopiSrc}?access_token=${encodeURIComponent(access_token)}`;
       let filterStatus = yield checkIpFilter(ctx, uri);
       if (0 !== filterStatus) {
         return fileInfo;
@@ -946,7 +946,7 @@ function lock(ctx, command, lockId, fileInfo, userAuth) {
         }
         let wopiSrc = userAuth.wopiSrc;
         let access_token = userAuth.access_token;
-        let uri = `${wopiSrc}?access_token=${access_token}`;
+        let uri = `${wopiSrc}?access_token=${encodeURIComponent(access_token)}`;
         let filterStatus = yield checkIpFilter(ctx, uri);
         if (0 !== filterStatus) {
           return false;
@@ -985,7 +985,7 @@ async function unlock(ctx, wopiParams) {
       let wopiSrc = wopiParams.userAuth.wopiSrc;
       let lockId = wopiParams.commonInfo.lockId;
       let access_token = wopiParams.userAuth.access_token;
-      let uri = `${wopiSrc}?access_token=${access_token}`;
+      let uri = `${wopiSrc}?access_token=${encodeURIComponent(access_token)}`;
       let filterStatus = await checkIpFilter(ctx, uri);
       if (0 !== filterStatus) {
         return;
diff --git a/Readme.md b/Readme.md
index a7a3adfd..109334f8 100644
--- a/Readme.md
+++ b/Readme.md
@@ -3,7 +3,7 @@
 
 [![License](https://img.shields.io/badge/License-GNU%20AGPL%20V3-green.svg?style=flat)](https://www.gnu.org/licenses/agpl-3.0.en.html)
 
-The backend server software layer which is the part of [ONLYOFFICE Document Server][2] and [ONLYOFFICE Desktop Editors][4] and is the base for all other components.
+The backend server software layer which is the part of [ONLYOFFICE Document Server][2] and is the base for all other components.
 
 ## Document service set up
 
@@ -98,7 +98,6 @@ If you have any problems with or questions about [ONLYOFFICE Document Server][2]
   [1]: https://forum.onlyoffice.com
   [2]: https://github.com/ONLYOFFICE/DocumentServer
   [3]: https://stackoverflow.com/questions/tagged/onlyoffice
-  [4]: https://github.com/ONLYOFFICE/DesktopEditors
 
 ## License