diff --git a/config/nginx/onlyoffice.conf b/config/nginx/onlyoffice.conf
index bfed75888d..a400db5ecd 100644
--- a/config/nginx/onlyoffice.conf
+++ b/config/nginx/onlyoffice.conf
@@ -172,23 +172,108 @@ server {
 
 	location /api/2.0 {
 		location ~* /(files|privacyroom) {
+	if ($request_method = 'OPTIONS') {
+        add_header 'Access-Control-Allow-Origin' '*';
+        add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS';
+        add_header 'Access-Control-Allow-Headers' '*';
+        add_header 'Access-Control-Max-Age' 1728000;
+        add_header 'Content-Type' 'text/plain; charset=utf-8';
+        add_header 'Content-Length' 0;
+        return 204;
+     }
+     if ($request_method = 'POST') {
+        add_header 'Access-Control-Allow-Origin' '*' always;
+        add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS' always;
+        add_header 'Access-Control-Allow-Headers' '*' always;
+        add_header 'Access-Control-Expose-Headers' 'Content-Length,Content-Range' always;
+     }
+     if ($request_method = 'GET') {
+        add_header 'Access-Control-Allow-Origin' '*' always;
+        add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS' always;
+        add_header 'Access-Control-Allow-Headers' '*' always;
+        add_header 'Access-Control-Expose-Headers' 'Content-Length,Content-Range' always;
+     }
 			 proxy_pass http://127.0.0.1:5007;
 			 proxy_set_header X-REWRITER-URL $X_REWRITER_URL;
 		}
 		
 		location ~* /(people|group) {
+	if ($request_method = 'OPTIONS') {
+        add_header 'Access-Control-Allow-Origin' '*';
+        add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS';
+        add_header 'Access-Control-Allow-Headers' '*';
+        add_header 'Access-Control-Max-Age' 1728000;
+        add_header 'Content-Type' 'text/plain; charset=utf-8';
+        add_header 'Content-Length' 0;
+        return 204;
+     }
+     if ($request_method = 'POST') {
+        add_header 'Access-Control-Allow-Origin' '*' always;
+        add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS' always;
+        add_header 'Access-Control-Allow-Headers' '*' always;
+        add_header 'Access-Control-Expose-Headers' 'Content-Length,Content-Range' always;
+     }
+     if ($request_method = 'GET') {
+        add_header 'Access-Control-Allow-Origin' '*' always;
+        add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS' always;
+        add_header 'Access-Control-Allow-Headers' '*' always;
+        add_header 'Access-Control-Expose-Headers' 'Content-Length,Content-Range' always;
+     }
 			 proxy_pass http://127.0.0.1:5004;
 			 proxy_set_header X-REWRITER-URL $X_REWRITER_URL;
 		}
 
 		location ~* /(authentication|modules|portal|security|settings|smtpsettings|capabilities|thirdparty|encryption|feed) {
+	 if ($request_method = 'OPTIONS') {
+        add_header 'Access-Control-Allow-Origin' '*';
+        add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS';
+        add_header 'Access-Control-Allow-Headers' '*';
+        add_header 'Access-Control-Max-Age' 1728000;
+        add_header 'Content-Type' 'text/plain; charset=utf-8';
+        add_header 'Content-Length' 0;
+        return 204;
+     }
+     if ($request_method = 'POST') {
+        add_header 'Access-Control-Allow-Origin' '*' always;
+        add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS' always;
+        add_header 'Access-Control-Allow-Headers' '*' always;
+        add_header 'Access-Control-Expose-Headers' 'Content-Length,Content-Range' always;
+     }
+     if ($request_method = 'GET') {
+        add_header 'Access-Control-Allow-Origin' '*' always;
+        add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS' always;
+        add_header 'Access-Control-Allow-Headers' '*' always;
+        add_header 'Access-Control-Expose-Headers' 'Content-Length,Content-Range' always;
+     }
 			 proxy_pass http://127.0.0.1:5000;
 			 proxy_set_header X-REWRITER-URL $X_REWRITER_URL;
 			  
 			 location ~* portal/(.*)(backup|restore)(.*) {
 				 rewrite (.*)/portal/(.*) $1/backup/$2  break;
 				 proxy_redirect     off;
-				  
+
+		if ($request_method = 'OPTIONS') {
+        add_header 'Access-Control-Allow-Origin' '*';
+        add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS';
+        add_header 'Access-Control-Allow-Headers' '*';
+        add_header 'Access-Control-Max-Age' 1728000;
+        add_header 'Content-Type' 'text/plain; charset=utf-8';
+        add_header 'Content-Length' 0;
+        return 204;
+     }
+     if ($request_method = 'POST') {
+        add_header 'Access-Control-Allow-Origin' '*' always;
+        add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS' always;
+        add_header 'Access-Control-Allow-Headers' '*' always;
+        add_header 'Access-Control-Expose-Headers' 'Content-Length,Content-Range' always;
+     }
+     if ($request_method = 'GET') {
+        add_header 'Access-Control-Allow-Origin' '*' always;
+        add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS' always;
+        add_header 'Access-Control-Allow-Headers' '*' always;
+        add_header 'Access-Control-Expose-Headers' 'Content-Length,Content-Range' always;
+     }
+
 				 proxy_pass http://127.0.0.1:5012;
 				 proxy_set_header X-REWRITER-URL $X_REWRITER_URL;
 			}
@@ -196,7 +281,28 @@ server {
 			location ~* authentication/register(.*) {
 				 rewrite (.*)/authentication/register(.*) $1/people/register$2  break;
 				 proxy_redirect     off;
-				  
+	 if ($request_method = 'OPTIONS') {
+        add_header 'Access-Control-Allow-Origin' '*';
+        add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS';
+        add_header 'Access-Control-Allow-Headers' '*';
+        add_header 'Access-Control-Max-Age' 1728000;
+        add_header 'Content-Type' 'text/plain; charset=utf-8';
+        add_header 'Content-Length' 0;
+        return 204;
+     }
+     if ($request_method = 'POST') {
+        add_header 'Access-Control-Allow-Origin' '*' always;
+        add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS' always;
+        add_header 'Access-Control-Allow-Headers' '*' always;
+        add_header 'Access-Control-Expose-Headers' 'Content-Length,Content-Range' always;
+     }
+     if ($request_method = 'GET') {
+        add_header 'Access-Control-Allow-Origin' '*' always;
+        add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS' always;
+        add_header 'Access-Control-Allow-Headers' '*' always;
+        add_header 'Access-Control-Expose-Headers' 'Content-Length,Content-Range' always;
+     }
+			  
 				 proxy_pass http://127.0.0.1:5004;
 				 proxy_set_header X-REWRITER-URL $X_REWRITER_URL;
 			}