diff --git a/backend/src/main/java/ru/micord/ervu/security/SecurityConstants.java b/backend/src/main/java/ru/micord/ervu/security/SecurityConstants.java
index feafe00..be40765 100644
--- a/backend/src/main/java/ru/micord/ervu/security/SecurityConstants.java
+++ b/backend/src/main/java/ru/micord/ervu/security/SecurityConstants.java
@@ -5,4 +5,5 @@ public class SecurityConstants {
   public static final String AUTH_TOKEN = "auth_token";
   public static final String AUTH_MARKER = "webbpm.ervu-lkrp-fl";
   public static final String PRNS_UUID = "prns_uuid_fl";
+  public static final String STICKY_SESSION = "stickysession";
 }
diff --git a/backend/src/main/java/ru/micord/ervu/security/esia/EsiaAuthInfoStore.java b/backend/src/main/java/ru/micord/ervu/security/esia/EsiaAuthInfoStore.java
index b05860f..8f40e24 100644
--- a/backend/src/main/java/ru/micord/ervu/security/esia/EsiaAuthInfoStore.java
+++ b/backend/src/main/java/ru/micord/ervu/security/esia/EsiaAuthInfoStore.java
@@ -106,10 +106,12 @@ public class EsiaAuthInfoStore {
     });
   }
 
-  public static void validateState(String prnsUUID, String state) {
+  public static void validateState(String prnsUUID, String state, String stickySession) {
     List<ExpiringState> states = PRNS_UUID_STATE_MAP.get(prnsUUID);
     if (states == null) {
-      throw new EsiaException("State invalid. No state found");
+      throw new EsiaException(
+          "State invalid. No state found. PrnsUUID: " + prnsUUID + ". State: " + state
+          + ". Sticky session:" + stickySession);
     }
     long currentTime = System.currentTimeMillis();
 
@@ -117,13 +119,17 @@ public class EsiaAuthInfoStore {
     for (ExpiringState expiringState : states) {
       if (expiringState.getState().equals(state)) {
         if (expiringState.getExpiryTime() < currentTime) {
-          throw new EsiaException("State invalid. State : " + state + " expired at : " + expiringState.getExpiryTime());
+          throw new EsiaException(
+              "State invalid. PrnsUUID: " + prnsUUID + ". Sticky session:" + stickySession
+              + ". State : " + state + " expired at : " + expiringState.getExpiryTime());
         }
         return;
       }
-      statesStringBuilder.append(expiringState.getState(), 0, 8).append(", ");
+      statesStringBuilder.append(expiringState.getState()).append(", ");
     }
-    throw new EsiaException("State invalid. Backend states :" + statesStringBuilder + " cookie state :" + state);
+    throw new EsiaException(
+        "State invalid. PrnsUUID: " + prnsUUID + ". Sticky session:" + stickySession
+        + ". Backend states :" + statesStringBuilder + " cookie state :" + state);
   }
 
   public static void removeState(String prnsUUID) {
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 126f2a3..fd45a01 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
@@ -60,6 +60,7 @@ import ru.micord.ervu.security.webbpm.jwt.model.Token;
 import ru.cg.webbpm.modules.core.runtime.api.MessageBundleUtils;
 
 import static ru.micord.ervu.security.SecurityConstants.PRNS_UUID;
+import static ru.micord.ervu.security.SecurityConstants.STICKY_SESSION;
 
 /**
  * @author Eduard Tihomirov
@@ -124,6 +125,10 @@ public class EsiaAuthService {
       String state = signResponse.getState();
       String clientSecret = signResponse.getSignature();
       EsiaAuthInfoStore.addState(prnsUUID, state, esiaConfig.getEsiaStateCookieLifeTime(), esiaConfig.getEsiaLoginAttemptsCount());
+      Cookie stickySession =  WebUtils.getCookie(request, STICKY_SESSION);
+      LOGGER.info("Auth states initialized: PrnsUUID: {}; State: {}; StickySession: {}", prnsUUID, state,
+          stickySession != null ? stickySession.getValue() : "is null"
+      );
       ResponseCookie prnsCookie = securityHelper.createAccessCookie(PRNS_UUID, prnsUUID)
           .maxAge(esiaConfig.getEsiaStateCookieLifeTime())
           .build();
@@ -519,15 +524,21 @@ public class EsiaAuthService {
 
   private void verifyStateFromCookie(HttpServletRequest request, String state, HttpServletResponse response) {
     Cookie cookie = WebUtils.getCookie(request, PRNS_UUID);
+    Cookie stickySessionCookie =  WebUtils.getCookie(request, STICKY_SESSION);
+    String stickySession = stickySessionCookie != null ? stickySessionCookie.getValue() : "is null";
     if (cookie == null) {
-      throw new EsiaException("State invalid. Cookie not found");
+      throw new EsiaException(
+          "State invalid. Cookie not found. State: " + state + ". Sticky session: " + stickySession);
     }
     String prnsUUID = cookie.getValue();
     try {
-      EsiaAuthInfoStore.validateState(prnsUUID, state);
+      EsiaAuthInfoStore.validateState(prnsUUID, state, stickySession);
     }
     finally {
       EsiaAuthInfoStore.removeState(prnsUUID);
+      LOGGER.info(
+          "Remove all states for prnsUUID: " + prnsUUID + ". State: " + state + ". Sticky session: "
+          + stickySession);
       securityHelper.clearAccessCookie(response, PRNS_UUID);
     }
   }
diff --git a/frontend/src/ts/modules/security/guard/auth.guard.ts b/frontend/src/ts/modules/security/guard/auth.guard.ts
index 427904d..341a012 100644
--- a/frontend/src/ts/modules/security/guard/auth.guard.ts
+++ b/frontend/src/ts/modules/security/guard/auth.guard.ts
@@ -29,6 +29,9 @@ export abstract class AuthGuard implements CanActivate {
       let state = params.get('state');
       let error = params.get('error');
       let errorDescription = params.get('error_description');
+      if (code || state || error || errorDescription) {
+        window.history.replaceState({}, document.title, url.pathname);
+      }
       if (isAccess) {
         return true;
       }