diff --git a/backend/src/main/java/ru/micord/ervu/security/esia/controller/EsiaController.java b/backend/src/main/java/ru/micord/ervu/security/esia/controller/EsiaController.java
index d2de57b..624a505 100644
--- a/backend/src/main/java/ru/micord/ervu/security/esia/controller/EsiaController.java
+++ b/backend/src/main/java/ru/micord/ervu/security/esia/controller/EsiaController.java
@@ -40,9 +40,8 @@ public class EsiaController {
 
   @GetMapping(value = "/esia/auth")
   public void esiaAuth(@RequestParam(value = "code", required = false) String code,
-      @RequestParam(value = "error", required = false) String error, HttpServletRequest request,
       HttpServletResponse response) {
-    esiaAuthService.authEsiaTokensByCode(code, error, request, response);
+    esiaAuthService.authEsiaTokensByCode(code, response);
   }
 
   @RequestMapping(value = "/esia/refresh")
diff --git a/backend/src/main/java/ru/micord/ervu/security/esia/service/EsiaAuthService.java b/backend/src/main/java/ru/micord/ervu/security/esia/service/EsiaAuthService.java
index 89dbda1..007d63a 100644
--- a/backend/src/main/java/ru/micord/ervu/security/esia/service/EsiaAuthService.java
+++ b/backend/src/main/java/ru/micord/ervu/security/esia/service/EsiaAuthService.java
@@ -152,11 +152,7 @@ public class EsiaAuthService {
     return uriBuilder.toString();
   }
 
-  public void authEsiaTokensByCode(String esiaAuthCode, String error,
-      HttpServletRequest request, HttpServletResponse response) {
-    if (error != null && !error.equals("null")) {
-      throw new EsiaException(error);
-    }
+  public void authEsiaTokensByCode(String esiaAuthCode, HttpServletResponse response) {
     String esiaAccessTokenStr = null;
     String prnOid = null;
     Long expiresIn = null;
diff --git a/frontend/src/ts/modules/security/guard/auth.guard.ts b/frontend/src/ts/modules/security/guard/auth.guard.ts
index 045946d..76d4c2c 100644
--- a/frontend/src/ts/modules/security/guard/auth.guard.ts
+++ b/frontend/src/ts/modules/security/guard/auth.guard.ts
@@ -30,37 +30,38 @@ export abstract class AuthGuard implements CanActivate {
       if (isAccess) {
         return true;
       }
-      if (code || error) {
-        const params = new HttpParams().set('code', code).set('error', error);
+      if (error) {
+        let errorMessage =
+            'Произошла неизвестная ошибка. Обратитесь к системному администратору';
+        let errorCode = this.extractCode(errorDescription);
+        if (errorCode) {
+          errorMessage = EsiaErrorDetail.getDescription(errorCode);
+        }
+        let consoleError = error + ', error description = ' + errorDescription;
+        this.messageService.error(errorMessage);
+        console.error(consoleError);
+      }
+      if (code) {
+        const params = new HttpParams().set('code', code);
         this.httpClient.get("esia/auth",
                             {
-                              params: params, responseType: 'text', observe: 'response', headers: {
+                              params: params,
+                              responseType: 'text',
+                              observe: 'response',
+                              headers: {
                                 "Error-intercept-skip": "true"
                               }
                             })
             .toPromise()
             .then(
-                (response) => {
+                () => {
                   window.open(url.origin + url.pathname, "_self");
                 })
-            .catch((reason) => {
-              let errorMessage = reason.error.messages != null
-                                 ? reason.error.messages
-                                 : reason.error.replaceAll('\\', '');
-              if (error) {
-                errorMessage = 'Произошла неизвестная ошибка. Обратитесь к системному администратору';
-                let errorCode = this.extractCode(errorDescription);
-                if (errorCode) {
-                  errorMessage = EsiaErrorDetail.getDescription(errorCode);
-                }
-                let consoleError = error + ', error description = ' + errorDescription;
-                this.messageService.error(errorMessage);
-                console.error(consoleError);
-              }
-              else {
-                this.messageService.error(errorMessage);
-                console.error(reason);
-              }
+            .catch(reason => {
+              const json = JSON.parse(reason.error);
+              json.messages.forEach((errorMessage) => {
+                this.messageService.error(errorMessage, json);
+              });
             });
         return false;
       }