diff --git a/LaunchServer/src/main/java/pro/gravit/launchserver/LaunchServer.java b/LaunchServer/src/main/java/pro/gravit/launchserver/LaunchServer.java
index 170269e3..a3df527f 100644
--- a/LaunchServer/src/main/java/pro/gravit/launchserver/LaunchServer.java
+++ b/LaunchServer/src/main/java/pro/gravit/launchserver/LaunchServer.java
@@ -344,7 +344,7 @@ public void run() {
                 try {
                     close();
                 } catch (Exception e) {
-                    logger.error(e);
+                    logger.error("LaunchServer close error", e);
                 }
             }));
             CommonHelper.newThread("Command Thread", true, commandHandler).start();
@@ -361,8 +361,7 @@ public void run() {
                     syncProfilesDir();
                     modulesManager.invokeEvent(new LaunchServerProfilesSyncEvent(this));
                 } catch (IOException e) {
-                    logger.error(e);
-                    logger.error("Updates/Profiles not synced");
+                    logger.error("Updates/Profiles not synced", e);
                 }
             }).start();
         }
@@ -373,7 +372,7 @@ public void run() {
             modulesManager.invokeEvent(new LaunchServerFullInitEvent(this));
             logger.info("LaunchServer started");
         } catch (Throwable e) {
-            logger.error(e);
+            logger.error("LaunchServer startup failed",e);
             JVMHelper.RUNTIME.exit(-1);
         }
     }
@@ -419,7 +418,7 @@ public void restart() {
         try {
             builder.start();
         } catch (IOException e) {
-            logger.error(e);
+            logger.error("Restart failed", e);
         }
     }
 
diff --git a/LaunchServer/src/main/java/pro/gravit/launchserver/auth/core/MySQLCoreProvider.java b/LaunchServer/src/main/java/pro/gravit/launchserver/auth/core/MySQLCoreProvider.java
index 1adfce80..eba8c911 100644
--- a/LaunchServer/src/main/java/pro/gravit/launchserver/auth/core/MySQLCoreProvider.java
+++ b/LaunchServer/src/main/java/pro/gravit/launchserver/auth/core/MySQLCoreProvider.java
@@ -346,7 +346,7 @@ public void addPublicKeyToHardwareInfo(UserHardware hardware, byte[] publicKey)
             s.setLong(2, mySQLUserHardware.id);
             s.executeUpdate();
         } catch (SQLException e) {
-            logger.error(e);
+            logger.error("SQL error", e);
         }
     }
 
@@ -363,7 +363,7 @@ public Iterable<User> getUsersByHardwareInfo(UserHardware hardware) {
                 }
             }
         } catch (SQLException e) {
-            logger.error(e);
+            logger.error("SQL error", e);
             return null;
         }
         return users;
@@ -379,7 +379,7 @@ public void banHardware(UserHardware hardware) {
             s.setLong(2, mySQLUserHardware.id);
             s.executeUpdate();
         } catch (SQLException e) {
-            logger.error(e);
+            logger.error("SQL Error", e);
         }
     }
 
@@ -393,7 +393,7 @@ public void unbanHardware(UserHardware hardware) {
             s.setLong(2, mySQLUserHardware.id);
             s.executeUpdate();
         } catch (SQLException e) {
-            logger.error(e);
+            logger.error("SQL error", e);
         }
     }
 
diff --git a/LaunchServer/src/main/java/pro/gravit/launchserver/binary/tasks/CertificateAutogenTask.java b/LaunchServer/src/main/java/pro/gravit/launchserver/binary/tasks/CertificateAutogenTask.java
index 82c998e9..4ab793af 100644
--- a/LaunchServer/src/main/java/pro/gravit/launchserver/binary/tasks/CertificateAutogenTask.java
+++ b/LaunchServer/src/main/java/pro/gravit/launchserver/binary/tasks/CertificateAutogenTask.java
@@ -77,7 +77,7 @@ public Path process(Path inputFile) throws IOException {
             chain.add(certificate);
             signedDataGenerator = SignHelper.createSignedDataGenerator(server.keyAgreementManager.ecdsaPrivateKey, certificate, chain, "SHA256WITHECDSA");
         } catch (OperatorCreationException | CMSException | CertificateException e) {
-            logger.error(e);
+            logger.error("Certificate generate failed", e);
         }
         return inputFile;
     }
diff --git a/LaunchServer/src/main/java/pro/gravit/launchserver/binary/tasks/MainBuildTask.java b/LaunchServer/src/main/java/pro/gravit/launchserver/binary/tasks/MainBuildTask.java
index 6f265068..fc2bef9d 100644
--- a/LaunchServer/src/main/java/pro/gravit/launchserver/binary/tasks/MainBuildTask.java
+++ b/LaunchServer/src/main/java/pro/gravit/launchserver/binary/tasks/MainBuildTask.java
@@ -89,7 +89,7 @@ protected void postInitProps() {
             try {
                 return e.getEncoded();
             } catch (CertificateEncodingException e2) {
-                logger.error(e2);
+                logger.error("Certificate encoding failed", e2);
                 return new byte[0];
             }
         }).collect(Collectors.toList());
diff --git a/LaunchServer/src/main/java/pro/gravit/launchserver/binary/tasks/SignJarTask.java b/LaunchServer/src/main/java/pro/gravit/launchserver/binary/tasks/SignJarTask.java
index 812035f5..a880c863 100644
--- a/LaunchServer/src/main/java/pro/gravit/launchserver/binary/tasks/SignJarTask.java
+++ b/LaunchServer/src/main/java/pro/gravit/launchserver/binary/tasks/SignJarTask.java
@@ -41,7 +41,7 @@ public static CMSSignedDataGenerator gen(LaunchServerConfig.JarSignerConf config
                     config.keyAlias, config.signAlgo, config.keyPass);
         } catch (CertificateEncodingException | UnrecoverableKeyException | KeyStoreException
                 | OperatorCreationException | NoSuchAlgorithmException | CMSException e) {
-            logger.error(e);
+            logger.error("Create signedDataGenerator failed", e);
             return null;
         }
     }
diff --git a/LaunchServer/src/main/java/pro/gravit/launchserver/socket/NettyThreadFactory.java b/LaunchServer/src/main/java/pro/gravit/launchserver/socket/NettyThreadFactory.java
index d9394422..753bbfc8 100644
--- a/LaunchServer/src/main/java/pro/gravit/launchserver/socket/NettyThreadFactory.java
+++ b/LaunchServer/src/main/java/pro/gravit/launchserver/socket/NettyThreadFactory.java
@@ -18,7 +18,7 @@ protected Thread newThread(Runnable r, String name) {
             if (e.getMessage().contains("Connection reset by peer")) {
                 return;
             }
-            logger.error(e);
+            logger.error("Netty exception", e);
         });
         return thread;
     }
diff --git a/LaunchServer/src/main/java/pro/gravit/launchserver/socket/handlers/WebSocketFrameHandler.java b/LaunchServer/src/main/java/pro/gravit/launchserver/socket/handlers/WebSocketFrameHandler.java
index 05283b71..8af37ca0 100644
--- a/LaunchServer/src/main/java/pro/gravit/launchserver/socket/handlers/WebSocketFrameHandler.java
+++ b/LaunchServer/src/main/java/pro/gravit/launchserver/socket/handlers/WebSocketFrameHandler.java
@@ -63,7 +63,7 @@ protected void channelRead0(ChannelHandlerContext ctx, WebSocketFrame frame) {
         try {
             if (hooks.hook(ctx, frame)) return;
         } catch (Throwable ex) {
-            logger.error(ex);
+            logger.error("WebSocket frame handler hook error", ex);
         }
         if (frame instanceof TextWebSocketFrame) {
             try {
@@ -72,7 +72,7 @@ protected void channelRead0(ChannelHandlerContext ctx, WebSocketFrame frame) {
                 logger.warn("Client {} send invalid request. Connection force closed.", context.ip == null ? IOHelper.getIP(ctx.channel().remoteAddress()) : context.ip);
                 if (logger.isTraceEnabled()) {
                     logger.trace("Client message: {}", ((TextWebSocketFrame) frame).text());
-                    logger.error(ex);
+                    logger.error("Process websockets request failed", ex);
                 }
                 ctx.channel().close();
             }
diff --git a/LaunchServer/src/main/java/pro/gravit/launchserver/socket/response/auth/JoinServerResponse.java b/LaunchServer/src/main/java/pro/gravit/launchserver/socket/response/auth/JoinServerResponse.java
index 2c861ad7..30125952 100644
--- a/LaunchServer/src/main/java/pro/gravit/launchserver/socket/response/auth/JoinServerResponse.java
+++ b/LaunchServer/src/main/java/pro/gravit/launchserver/socket/response/auth/JoinServerResponse.java
@@ -49,7 +49,7 @@ public void execute(ChannelHandlerContext ctx, Client client) {
             sendError(e.getMessage());
             return;
         } catch (Exception e) {
-            logger.error(e);
+            logger.error("Join Server error", e);
             sendError("Internal authHandler error");
             return;
         }