diff --git a/GanjooRazor/appsettings.json b/GanjooRazor/appsettings.json
index 63cb4262..049cfd2d 100644
--- a/GanjooRazor/appsettings.json
+++ b/GanjooRazor/appsettings.json
@@ -10,5 +10,6 @@
   "GoogleAnalyticsCode": "",
   "APIRoot": "http://localhost:3439",
   "GlobalAPIRoot": "http://localhost:3439",
-  "SiteUrl": "https://localhost:33081"
+  "SiteUrl": "https://localhost:33081",
+  "ReadOnlyMode": "False"
 }
diff --git a/RMuseum/appsettings.json b/RMuseum/appsettings.json
index 8a6f7fc7..0834a10a 100644
--- a/RMuseum/appsettings.json
+++ b/RMuseum/appsettings.json
@@ -78,5 +78,6 @@
     "GDBListXMLFile": "D:\\My Documents\\My Web Design\\ganjoor\\www\\i\\android\\sitepoets.xml"
   },
   "WebServiceUrl": "http://localhost:3439",
+  "ReadOnlyMode":  "False",
   "AllowedHosts": "*"
 }
diff --git a/RSecurityBackend/Controllers/AppUserControllerBase.cs b/RSecurityBackend/Controllers/AppUserControllerBase.cs
index a211154f..51943cb6 100644
--- a/RSecurityBackend/Controllers/AppUserControllerBase.cs
+++ b/RSecurityBackend/Controllers/AppUserControllerBase.cs
@@ -827,6 +827,9 @@ namespace RSecurityBackend.Controllers
         [ProducesResponseType((int)HttpStatusCode.BadRequest, Type = typeof(string))]
         public async Task<IActionResult> SignUp([FromBody] UnverifiedSignUpViewModel signUpViewModel)
         {
+            if (SiteInReadOnlyMode)
+                return BadRequest("سایت به دلایل فنی مثل انتقال سرور موقتاً در حالت فقط خواندنی قرار دارد. لطفاً ساعاتی دیگر مجدداً برای ثبت نام تلاش کنید.");
+
             if (!SignupEnabled)
                 return BadRequest("ثبت نام غیرفعال است.");
 
@@ -959,6 +962,17 @@ namespace RSecurityBackend.Controllers
             return Ok(true);
         }
 
+        /// <summary>
+        /// read only mode
+        /// </summary>
+        public bool SiteInReadOnlyMode
+        {
+            get
+            {
+                return bool.Parse(Configuration["ReadOnlyMode"]);
+            }
+        }
+
 
         /// <summary>
         /// Is Sign-up enabled?