diff --git a/dconfig-center/dde-dconfig-daemon/dconfig_global.h b/dconfig-center/dde-dconfig-daemon/dconfig_global.h
index a9ea532..5fabc36 100644
--- a/dconfig-center/dde-dconfig-daemon/dconfig_global.h
+++ b/dconfig-center/dde-dconfig-daemon/dconfig_global.h
@@ -96,7 +96,9 @@ inline ConfigureId getMetaConfigureId(const QString &path)
     ConfigureId info;
     // /usr/share/dsg/configs/[$appid]/[$subpath]/$resource.json
     // Use negative lookahead (?!overrides/) to exclude override paths which should be handled by getOverrideConfigureId
-    static QRegularExpression usrReg(R"(/configs/(?!overrides/)(?<appid>([a-z0-9\s\-_\@\-\^!#$%&.]+\/)?)(?<subpath>([a-z0-9\s\-_\@\-\^!#$%&.]+\/)*)(?<resource>[a-z0-9\s\-_\@\-\^!#$%&.]+).json$)");
+    static QRegularExpression usrReg(
+        R"(/configs/(?!overrides/)(?<appid>(?>[a-zA-Z0-9\s_@^!#$%&.\-]+)\/)?(?<subpath>(?:(?>[a-zA-Z0-9\s_@^!#$%&.\-]+)\/)*)(?<resource>[a-zA-Z0-9\s_@^!#$%&.\-]+)\.json$)"
+    );
 
     QRegularExpressionMatch match;
     match = usrReg.match(path);
@@ -114,10 +116,14 @@ inline ConfigureId getOverrideConfigureId(const QString &path)
 {
     ConfigureId info;
     // /usr/share/dsg/configs/overrides/[$appid]/$resource/[$subpath]/$override_id.json
-    static QRegularExpression usrReg(R"(/configs/overrides/(?<appid>([a-z0-9\s\-_\@\-\^!#$%&.]+\/)?)(?<resource>[a-z0-9\s\-_\@\-\^!#$%&.]+)/(?<subpath>([a-z0-9\s\-_\@\-\^!#$%&.]+\/)*)(?<configurationid>[a-z0-9\s\-_\@\-\^!#$%&.]+).json$)");
+    static QRegularExpression usrReg(
+        R"(/configs/overrides/(?<appid>(?>[a-zA-Z0-9\s_@^!#$%&.\-]+)\/)?(?<resource>(?>[a-zA-Z0-9\s_@^!#$%&.\-]+))/(?<subpath>(?:(?>[a-zA-Z0-9\s_@^!#$%&.\-]+)\/)*)(?<configurationid>[a-zA-Z0-9\s_@^!#$%&.\-]+)\.json$)"
+    );
 
     // /etc/dsg/configs/overrides/[$appid]/$resource/[$subpath]/$override_id.json
-    static QRegularExpression etcReg(R"(^/etc/dsg/configs/overrides/(?<appid>([a-z0-9\s\-_\@\-\^!#$%&.]+\/)?)(?<resource>[a-z0-9\s\-_\@\-\^!#$%&.]+)/(?<subpath>([a-z0-9\s\-_\@\-\^!#$%&.]+\/)*)(?<configurationid>[a-z0-9\s\-_\@\-\^!#$%&.]+).json$)");
+    static QRegularExpression etcReg(
+        R"(^/etc/dsg/configs/overrides/(?<appid>(?>[a-zA-Z0-9\s_@^!#$%&.\-]+)\/)?(?<resource>(?>[a-zA-Z0-9\s_@^!#$%&.\-]+))/(?<subpath>(?:(?>[a-zA-Z0-9\s_@^!#$%&.\-]+)\/)*)(?<configurationid>[a-zA-Z0-9\s_@^!#$%&.\-]+)\.json$)"
+    );
 
     QRegularExpressionMatch match;
     match = usrReg.match(path);
diff --git a/dconfig-center/dde-dconfig-daemon/dconfigserver.cpp b/dconfig-center/dde-dconfig-daemon/dconfigserver.cpp
index 44efd78..ad9f68d 100644
--- a/dconfig-center/dde-dconfig-daemon/dconfigserver.cpp
+++ b/dconfig-center/dde-dconfig-daemon/dconfigserver.cpp
@@ -435,7 +435,7 @@ bool DSGConfigServer::isConfigurePath(const QString &path, const QString &appId)
  当描述文件被修改或override目录新增、移除、修改文件时，需要重新解析对应的文件内容，
  提供刷新服务，由配置工具调用来运行时刷新提供的文件访问信息。
  */
-void DSGConfigServer::update(const QString &path)
+std::optional<QString> DSGConfigServer::updateInternal(const QString &path)
 {
     qCInfo(cfLog()) << "Update resource:" << path;
 
@@ -445,15 +445,9 @@ void DSGConfigServer::update(const QString &path)
            qPrintable(configureInfo.subpath),
            qPrintable(configureInfo.resource));
     if (configureInfo.isInValid()) {
-        QString errorMsg = QString("It's illegal resource [%1].").arg(path);
-        if (calledFromDBus()) {
-            sendErrorReply(QDBusError::Failed, errorMsg);
-        }
-        qWarning() << errorMsg;
-        return;
+        return QString("It's illegal resource [%1].").arg(path);
     }
 
-
     const GenericResourceKey resourceKey = getGenericResourceKey(configureInfo.resource, configureInfo.subpath);
     if (auto resource = resourceObject(resourceKey)) {
         qCInfo(cfLog, "Updated the resouce:[%s], for the appid:[%s].",
@@ -461,11 +455,19 @@ void DSGConfigServer::update(const QString &path)
                qPrintable(configureInfo.appid));
         const auto &innerAppid = outerAppidToInner(configureInfo.appid);
         if (!resource->reparse(innerAppid)) {
-            QString errorMsg = QString("Update the resource path[%1] error.").arg(path);
-            if (calledFromDBus()) {
-                sendErrorReply(QDBusError::Failed, errorMsg);
-            }
-            qWarning() << qPrintable(errorMsg);
+            return QString("Update the resource path[%1] error.").arg(path);
+        }
+    }
+    return std::nullopt;
+}
+
+void DSGConfigServer::update(const QString &path)
+{
+    const auto errorMsg = updateInternal(path);
+    if (errorMsg) {
+        qWarning() << *errorMsg;
+        if (calledFromDBus()) {
+            sendErrorReply(QDBusError::Failed, *errorMsg);
         }
     }
 }
@@ -557,12 +559,23 @@ void DSGConfigServer::reload()
 
     changedFiles.removeDuplicates();
 
+    if (changedFiles.isEmpty()) {
+        qCInfo(cfLog()) << "Reload completed, no files changed";
+        return;
+    }
+
     // Process changed files
+    int failedCount = 0;
     for (const auto &file : std::as_const(changedFiles)) {
-        update(file);
+        const auto errorMsg = updateInternal(file);
+        if (errorMsg) {
+            qCWarning(cfLog()) << "Reload failed to update file:" << file << ", reason:" << *errorMsg;
+            ++failedCount;
+        }
     }
 
-    qCInfo(cfLog()) << "Reload completed, processed" << changedFiles.size() << "files";
+    qCInfo(cfLog()) << "Reload completed, processed" << changedFiles.size() << "files,"
+                    << failedCount << "failed";
 }
 
 // Get all configuration file signatures
diff --git a/dconfig-center/dde-dconfig-daemon/dconfigserver.h b/dconfig-center/dde-dconfig-daemon/dconfigserver.h
index 8c3af3f..f4127da 100644
--- a/dconfig-center/dde-dconfig-daemon/dconfigserver.h
+++ b/dconfig-center/dde-dconfig-daemon/dconfigserver.h
@@ -5,6 +5,7 @@
 #pragma once
 
 #include "dconfig_global.h"
+#include <optional>
 #include <QObject>
 #include <QDBusObjectPath>
 #include <QDBusContext>
@@ -83,6 +84,9 @@ private Q_SLOTS:
     ConfigureId getConfigureIdByPath(const QString &path);
 
     bool isConfigurePath(const QString &path, const QString& appId) const;
+
+    std::optional<QString> updateInternal(const QString &path);
+
     // Reload interface related structures and methods
     struct FileSignature {
         qint64 size;