diff --git a/electron/preload.ts b/electron/preload.ts
index 97393322..cc9922c9 100644
--- a/electron/preload.ts
+++ b/electron/preload.ts
@@ -71,6 +71,7 @@ contextBridge.exposeInMainWorld('electronAPI', {
       ipcRenderer.on('app:updateAvailable', (_, info) => callback(info))
       return () => ipcRenderer.removeAllListeners('app:updateAvailable')
     },
+    getPlatform: () => process.platform,
   },
 
   // 日志
diff --git a/electron/services/analyticsService.ts b/electron/services/analyticsService.ts
index 1ba6c004..dd05f7ce 100644
--- a/electron/services/analyticsService.ts
+++ b/electron/services/analyticsService.ts
@@ -1,7 +1,7 @@
 import { ConfigService } from './config'
 import { wcdbService } from './wcdbService'
 import { join } from 'path'
-import { readFile, writeFile, rm } from 'fs/promises'
+import { readFile, writeFile, rm, mkdir } from 'fs/promises'
 import { app } from 'electron'
 import { createHash } from 'crypto'
 
@@ -402,7 +402,10 @@ class AnalyticsService {
 
   private async saveCacheToFile(data: any) {
     try {
-      await writeFile(this.getCacheFilePath(), JSON.stringify(data))
+      const filePath = this.getCacheFilePath()
+      const dir = require('path').dirname(filePath)
+      await mkdir(dir, { recursive: true })
+      await writeFile(filePath, JSON.stringify(data))
     } catch (e) {
       console.error('保存统计缓存失败:', e)
     }
diff --git a/electron/services/wcdbCore.ts b/electron/services/wcdbCore.ts
index 116ba457..cb2cc1bd 100644
--- a/electron/services/wcdbCore.ts
+++ b/electron/services/wcdbCore.ts
@@ -1,5 +1,5 @@
 import { join, dirname, basename } from 'path'
-import { appendFileSync, existsSync, mkdirSync, readdirSync, statSync, readFileSync } from 'fs'
+import { appendFileSync, existsSync, mkdirSync, readdirSync, statSync, readFileSync, symlinkSync, rmdirSync, linkSync } from 'fs'
 import { tmpdir } from 'os'
 import * as fzstd from 'fzstd'
 
@@ -22,6 +22,9 @@ export class WcdbCore {
   private currentKey: string | null = null
   private currentWxid: string | null = null
   private currentDbStoragePath: string | null = null
+  private kernel32: any = null
+  private dbJunctionPath: string | null = null
+  private dbJunctionTarget: string | null = null
 
   // 函数引用
   private wcdbInitProtection: any = null
@@ -131,6 +134,57 @@ export class WcdbCore {
   private lastCursorForceReopenAt = 0
   private readonly cursorForceReopenCooldownMs = 15000
 
+  private resolveShortPath(longPath: string): string | null {
+    if (process.platform !== 'win32' || !this.kernel32?.GetShortPathNameW) return longPath
+    try {
+      const buf = Buffer.alloc(520) // MAX_PATH * 2 for UTF-16
+      const len = this.kernel32.GetShortPathNameW(longPath, buf, 260)
+      if (len > 0 && len < 260) {
+        return buf.toString('utf16le', 0, len * 2)
+      }
+    } catch (e) {
+      this.writeLog(`[wcdbCore] resolveShortPath failed: ${String(e)}`, true)
+    }
+    return null
+  }
+
+  /**
+   * 为包含非 ASCII 字符的路径创建 Windows Junction Point
+   */
+  private ensureDbJunction(dbBasePath: string): string {
+    if (process.platform !== 'win32') return dbBasePath
+    if (!/[^\x00-\x7F]/.test(dbBasePath)) return dbBasePath
+    try {
+      const mountPoint = join(tmpdir(), 'weflow_db_junc')
+      if (this.dbJunctionPath === mountPoint && this.dbJunctionTarget === dbBasePath && existsSync(mountPoint)) {
+        return mountPoint
+      }
+      if (existsSync(mountPoint)) {
+        try { rmdirSync(mountPoint) } catch {}
+      }
+      symlinkSync(dbBasePath, mountPoint, 'junction')
+      this.dbJunctionPath = mountPoint
+      this.dbJunctionTarget = dbBasePath
+      this.writeLog(`[wcdbCore] junction created: ${mountPoint} -> ${dbBasePath}`, true)
+      return mountPoint
+    } catch (e) {
+      this.writeLog(`[wcdbCore] junction failed: ${String(e)}`, true)
+      return dbBasePath
+    }
+  }
+
+  private cleanupDbJunction() {
+    if (process.platform !== 'win32' || !this.dbJunctionPath) return
+    try {
+      if (existsSync(this.dbJunctionPath)) rmdirSync(this.dbJunctionPath)
+      this.writeLog(`[wcdbCore] junction removed: ${this.dbJunctionPath}`, true)
+    } catch (e) {
+      this.writeLog(`[wcdbCore] junction removal failed: ${String(e)}`, true)
+    }
+    this.dbJunctionPath = null
+    this.dbJunctionTarget = null
+  }
+
   setPaths(resourcesPath: string, userDataPath: string): void {
     this.resourcesPath = resourcesPath
     this.userDataPath = userDataPath
@@ -707,6 +761,15 @@ export class WcdbCore {
         }
       }
 
+      if (process.platform === 'win32') {
+        try {
+          this.kernel32 = this.koffi.load('kernel32.dll')
+          this.kernel32.GetShortPathNameW = this.kernel32.func('uint32 __stdcall GetShortPathNameW(const char16* longPath, _Out_ char16* shortPath, uint32 bufferSize)')
+        } catch (e) {
+          this.writeLog(`[bootstrap] failed to load kernel32 for short paths: ${String(e)}`, true)
+        }
+      }
+
       this.writeLog(`[bootstrap] koffi.load begin path=${dllPath}`, true)
       this.lib = this.koffi.load(dllPath)
       this.writeLog('[bootstrap] koffi.load ok', true)
@@ -1187,13 +1250,6 @@ export class WcdbCore {
       // wcdb_status wcdb_cloud_init(int32_t interval_seconds)
       try {
         this.wcdbCloudInit = this.lib.func('int32 wcdb_cloud_init(int32 intervalSeconds)')
-      } catch {
-        this.wcdbCloudInit = null
-      }
-
-      // wcdb_status wcdb_cloud_report(const char* stats_json)
-      try {
-        this.wcdbCloudReport = this.lib.func('int32 wcdb_cloud_report(const char* statsJson)')
       } catch {
         this.wcdbCloudReport = null
       }
@@ -1231,14 +1287,6 @@ export class WcdbCore {
    */
   async testConnection(dbPath: string, hexKey: string, wxid: string): Promise<{ success: boolean; error?: string; sessionCount?: number }> {
     try {
-      // 如果当前已经有相同参数的活动连接，直接返回成功
-      if (this.handle !== null &&
-        this.currentPath === dbPath &&
-        this.currentKey === hexKey &&
-        this.currentWxid === wxid) {
-        return { success: true, sessionCount: 0 }
-      }
-
       // 记录当前活动连接，用于在测试结束后恢复（避免影响聊天页等正在使用的连接）
       const hadActiveConnection = this.handle !== null
       const prevPath = this.currentPath
@@ -1253,8 +1301,9 @@ export class WcdbCore {
         }
       }
 
-      // 构建 db_storage 目录路径
-      const dbStoragePath = this.resolveDbStoragePath(dbPath, wxid)
+      // 构建 db_storage 目录路径（使用 junction 确保 DLL 获得全 ASCII 路径）
+      const effectiveTestPath = this.ensureDbJunction(dbPath)
+      const dbStoragePath = this.resolveDbStoragePath(effectiveTestPath, wxid)
       this.writeLog(`testConnection dbPath=${dbPath} wxid=${wxid} dbStorage=${dbStoragePath || 'null'}`)
 
       if (!dbStoragePath || !existsSync(dbStoragePath)) {
@@ -1263,15 +1312,16 @@ export class WcdbCore {
 
       // 递归查找 session.db
       const sessionDbPath = this.findSessionDb(dbStoragePath)
-      this.writeLog(`testConnection sessionDb=${sessionDbPath || 'null'}`)
-
       if (!sessionDbPath) {
         return { success: false, error: this.formatInitProtectionError(-3002) }
       }
 
       // 分配输出参数内存
       const handleOut = [0]
-      const result = this.wcdbOpenAccount(sessionDbPath, hexKey, handleOut)
+      // 为了兼容 Junction 和中文路径，仅在必要时转为 8.3 短路径
+      const isAlreadyAscii = sessionDbPath && !/[^\x00-\x7F]/.test(sessionDbPath);
+      const finalSessionPath = isAlreadyAscii ? sessionDbPath : (this.resolveShortPath(sessionDbPath) || sessionDbPath);
+      const result = this.wcdbOpenAccount(finalSessionPath, hexKey, handleOut)
 
       if (result !== 0) {
         await this.printLogs()
@@ -1290,6 +1340,7 @@ export class WcdbCore {
         this.wcdbShutdown()
         this.handle = null
         this.currentPath = null
+        this.cleanupDbJunction()
         this.currentKey = null
         this.currentWxid = null
         this.initialized = false
@@ -1308,9 +1359,8 @@ export class WcdbCore {
 
       return { success: true, sessionCount: 0 }
     } catch (e) {
-      console.error('测试连接异常:', e)
-      this.writeLog(`testConnection exception: ${String(e)}`)
-      return { success: false, error: this.formatInitProtectionError(-3004) }
+      console.error('测试数据库连接异常:', e)
+      return { success: false, error: String(e) }
     }
   }
 
@@ -1529,7 +1579,8 @@ export class WcdbCore {
         if (!initOk) return false
       }
 
-      const dbStoragePath = this.resolveDbStoragePath(dbPath, wxid)
+      const effectiveDbPath = this.ensureDbJunction(dbPath)
+      const dbStoragePath = this.resolveDbStoragePath(effectiveDbPath, wxid)
       this.writeLog(`open dbPath=${dbPath} wxid=${wxid} dbStorage=${dbStoragePath || 'null'}`, true)
 
       if (!dbStoragePath || !existsSync(dbStoragePath)) {
@@ -1548,8 +1599,26 @@ export class WcdbCore {
         return false
       }
 
+      // [核心修复] 解决朋友圈 -3 错误：微信 DLL 逻辑会从 session.db 所在目录找 sns.db
+      if (process.platform === 'win32') {
+        try {
+          const snsDbSource = join(dbStoragePath, 'sns', 'sns.db');
+          const sessionDir = join(dbStoragePath, 'session');
+          const snsDbTarget = join(sessionDir, 'sns.db');
+          if (existsSync(snsDbSource) && existsSync(sessionDir) && !existsSync(snsDbTarget)) {
+            this.writeLog(`[wcdbCore] creating sns.db hardlink for compat: ${snsDbTarget} -> ${snsDbSource}`, true);
+            linkSync(snsDbSource, snsDbTarget);
+          }
+        } catch (linkErr) {
+          this.writeLog(`[wcdbCore] sns.db link failed: ${String(linkErr)}`, true);
+        }
+      }
+
       const handleOut = [0]
-      const result = this.wcdbOpenAccount(sessionDbPath, hexKey, handleOut)
+      // 为了兼容 Junction 和中文路径，仅在必要时转为 8.3 短路径
+      const isAlreadyAscii = sessionDbPath && !/[^\x00-\x7F]/.test(sessionDbPath);
+      const finalSessionPath = isAlreadyAscii ? sessionDbPath : (this.resolveShortPath(sessionDbPath) || sessionDbPath);
+      const result = this.wcdbOpenAccount(finalSessionPath, hexKey, handleOut)
 
       if (result !== 0) {
         console.error('打开数据库失败:', result)
@@ -1576,15 +1645,10 @@ export class WcdbCore {
         try {
           this.wcdbSetMyWxid(this.handle, wxid)
         } catch (e) {
-          // 静默失败
+          console.error('设置 wxid 失败:', e)
         }
       }
-      if (this.isLogEnabled()) {
-        this.startLogPolling()
-      }
-      this.writeLog(`open ok handle=${handle}`, true)
-      await this.dumpDbStatus('open')
-      await this.runPostOpenDiagnostics(dbPath, dbStoragePath, sessionDbPath, wxid)
+      this.startLogPolling()
       return true
     } catch (e) {
       console.error('打开数据库异常:', e)
@@ -1608,6 +1672,7 @@ export class WcdbCore {
       }
       this.handle = null
       this.currentPath = null
+      this.cleanupDbJunction()
       this.currentKey = null
       this.currentWxid = null
       this.currentDbStoragePath = null
diff --git a/package-lock.json b/package-lock.json
index 0c06ec13..6f7649f5 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -79,6 +79,7 @@
       "integrity": "sha512-CGOfOJqWjg2qW/Mb6zNsDm+u5vFQ8DxXfbM09z69p5Z6+mE1ikP2jUXw+j42Pf1XTYED2Rni5f95npYeuwMDQA==",
       "dev": true,
       "license": "MIT",
+      "peer": true,
       "dependencies": {
         "@babel/code-frame": "^7.29.0",
         "@babel/generator": "^7.29.0",
@@ -770,7 +771,6 @@
       "dev": true,
       "license": "BSD-2-Clause",
       "optional": true,
-      "peer": true,
       "dependencies": {
         "cross-dirname": "^0.1.0",
         "debug": "^4.3.4",
@@ -792,7 +792,6 @@
       "dev": true,
       "license": "MIT",
       "optional": true,
-      "peer": true,
       "dependencies": {
         "graceful-fs": "^4.2.0",
         "jsonfile": "^6.0.1",
@@ -809,7 +808,6 @@
       "dev": true,
       "license": "MIT",
       "optional": true,
-      "peer": true,
       "dependencies": {
         "universalify": "^2.0.0"
       },
@@ -824,7 +822,6 @@
       "dev": true,
       "license": "MIT",
       "optional": true,
-      "peer": true,
       "engines": {
         "node": ">= 10.0.0"
       }
@@ -2974,6 +2971,7 @@
       "resolved": "https://registry.npmjs.org/@types/react/-/react-19.2.14.tgz",
       "integrity": "sha512-ilcTH/UniCkMdtexkoCN0bI7pMcJDvmQFPvuPvmEaYA/NSfFTAgdUSLAoVjaRJm7+6PvcM+q1zYOwS4wTYMF9w==",
       "license": "MIT",
+      "peer": true,
       "dependencies": {
         "csstype": "^3.2.2"
       }
@@ -3099,6 +3097,7 @@
       "integrity": "sha512-IWrosm/yrn43eiKqkfkHis7QioDleaXQHdDVPKg0FSwwd/DuvyX79TZnFOnYpB7dcsFAMmtFztZuXPDvSePkFw==",
       "dev": true,
       "license": "MIT",
+      "peer": true,
       "dependencies": {
         "fast-deep-equal": "^3.1.1",
         "fast-json-stable-stringify": "^2.0.0",
@@ -3654,6 +3653,7 @@
         }
       ],
       "license": "MIT",
+      "peer": true,
       "dependencies": {
         "baseline-browser-mapping": "^2.10.12",
         "caniuse-lite": "^1.0.30001782",
@@ -4390,8 +4390,7 @@
       "integrity": "sha512-+R08/oI0nl3vfPcqftZRpytksBXDzOUveBq/NBVx0sUp1axwzPQrKinNx5yd5sxPu8j1wIy8AfnVQ+5eFdha6Q==",
       "dev": true,
       "license": "MIT",
-      "optional": true,
-      "peer": true
+      "optional": true
     },
     "node_modules/cross-spawn": {
       "version": "7.0.6",
@@ -4662,6 +4661,7 @@
       "integrity": "sha512-glMJgnTreo8CFINujtAhCgN96QAqApDMZ8Vl1r8f0QT8QprvC1UCltV4CcWj20YoIyLZx6IUskaJZ0NV8fokcg==",
       "dev": true,
       "license": "MIT",
+      "peer": true,
       "dependencies": {
         "app-builder-lib": "26.8.1",
         "builder-util": "26.8.1",
@@ -4848,6 +4848,7 @@
       "resolved": "https://registry.npmjs.org/echarts/-/echarts-6.0.0.tgz",
       "integrity": "sha512-Tte/grDQRiETQP4xz3iZWSvoHrkCQtwqd6hs+mifXcjrCuo2iKWbajFObuLJVBlDIJlOzgQPd1hsaKt/3+OMkQ==",
       "license": "Apache-2.0",
+      "peer": true,
       "dependencies": {
         "tslib": "2.3.0",
         "zrender": "6.0.0"
@@ -5115,7 +5116,6 @@
       "dev": true,
       "hasInstallScript": true,
       "license": "MIT",
-      "peer": true,
       "dependencies": {
         "@electron/asar": "^3.2.1",
         "debug": "^4.1.1",
@@ -5136,7 +5136,6 @@
       "integrity": "sha512-YJDaCJZEnBmcbw13fvdAM9AwNOJwOzrE4pqMqBq5nFiEqXUqHwlK4B+3pUw6JNvfSPtX05xFHtYy/1ni01eGCw==",
       "dev": true,
       "license": "MIT",
-      "peer": true,
       "dependencies": {
         "graceful-fs": "^4.1.2",
         "jsonfile": "^4.0.0",
@@ -8351,7 +8350,6 @@
       "dev": true,
       "license": "MIT",
       "optional": true,
-      "peer": true,
       "dependencies": {
         "commander": "^9.4.0"
       },
@@ -8369,7 +8367,6 @@
       "dev": true,
       "license": "MIT",
       "optional": true,
-      "peer": true,
       "engines": {
         "node": "^12.20.0 || >=14"
       }
@@ -8474,6 +8471,7 @@
       "resolved": "https://registry.npmjs.org/react/-/react-19.2.4.tgz",
       "integrity": "sha512-9nfp2hYpCwOjAN+8TZFGhtWEwgvWHXqESH8qT89AT/lWklpLON22Lc8pEtnpsZz7VmawabSU0gCjnj8aC0euHQ==",
       "license": "MIT",
+      "peer": true,
       "engines": {
         "node": ">=0.10.0"
       }
@@ -8483,6 +8481,7 @@
       "resolved": "https://registry.npmjs.org/react-dom/-/react-dom-19.2.4.tgz",
       "integrity": "sha512-AXJdLo8kgMbimY95O2aKQqsz2iWi9jMgKJhRBAxECE4IFxfcazB2LmzloIoibJI3C12IlY20+KFaLv+71bUJeQ==",
       "license": "MIT",
+      "peer": true,
       "dependencies": {
         "scheduler": "^0.27.0"
       },
@@ -8919,6 +8918,7 @@
       "integrity": "sha512-kgW13M54DUB7IsIRM5LvJkNlpH+WhMpooUcaWGFARkF1Tc82v9mIWkCbCYf+MBvpIUBSeSOTilpZjEPr2VYE6Q==",
       "dev": true,
       "license": "MIT",
+      "peer": true,
       "dependencies": {
         "chokidar": "^4.0.0",
         "immutable": "^5.1.5",
@@ -9549,7 +9549,6 @@
       "integrity": "sha512-yYrrsWnrXMcdsnu/7YMYAofM1ktpL5By7vZhf15CrXijWWrEYZks5AXBudalfSWJLlnen/QUJUB5aoB0kqZUGA==",
       "dev": true,
       "license": "MIT",
-      "peer": true,
       "dependencies": {
         "mkdirp": "^0.5.1",
         "rimraf": "~2.6.2"
@@ -10070,6 +10069,7 @@
       "integrity": "sha512-Bby3NOsna2jsjfLVOHKes8sGwgl4TT0E6vvpYgnAYDIF/tie7MRaFthmKuHx1NSXjiTueXH3do80FMQgvEktRg==",
       "dev": true,
       "license": "MIT",
+      "peer": true,
       "dependencies": {
         "esbuild": "^0.27.0",
         "fdir": "^6.5.0",
@@ -10159,7 +10159,8 @@
       "resolved": "https://registry.npmjs.org/vite-plugin-electron-renderer/-/vite-plugin-electron-renderer-0.14.6.tgz",
       "integrity": "sha512-oqkWFa7kQIkvHXG7+Mnl1RTroA4sP0yesKatmAy0gjZC4VwUqlvF9IvOpHd1fpLWsqYX/eZlVxlhULNtaQ78Jw==",
       "dev": true,
-      "license": "MIT"
+      "license": "MIT",
+      "peer": true
     },
     "node_modules/wcwidth": {
       "version": "1.0.1",
diff --git a/src/pages/SettingsPage.tsx b/src/pages/SettingsPage.tsx
index b62f101e..baa05b3b 100644
--- a/src/pages/SettingsPage.tsx
+++ b/src/pages/SettingsPage.tsx
@@ -1057,7 +1057,8 @@ function SettingsPage({ onClose }: SettingsPageProps = {}) {
 
   const validatePath = (path: string): string | null => {
     if (!path) return null
-    if (/[\u4e00-\u9fa5]/.test(path)) {
+    const isWindows = window.electronAPI.app.getPlatform() === 'win32'
+    if (!isWindows && /[\u4e00-\u9fa5]/.test(path)) {
       return '路径包含中文字符，请迁移至全英文目录'
     }
     return null
diff --git a/src/pages/WelcomePage.tsx b/src/pages/WelcomePage.tsx
index 1dda111c..eaa39ac4 100644
--- a/src/pages/WelcomePage.tsx
+++ b/src/pages/WelcomePage.tsx
@@ -352,8 +352,10 @@ function WelcomePage({ standalone = false }: WelcomePageProps) {
 
   const validatePath = (path: string): string | null => {
     if (!path) return null
-    // 检测中文字符和其他可能有问题的特殊字符
-    if (/[\u4e00-\u9fa5]/.test(path)) {
+    // 仅针对非 Windows 平台恢复中文路径校验
+    // Windows 端已通过 wcdbCore 的 Junction Point 修复，无需拦截
+    const isWindows = window.electronAPI.app.getPlatform() === 'win32'
+    if (!isWindows && /[\u4e00-\u9fa5]/.test(path)) {
       return DB_PATH_CHINESE_ERROR
     }
     return null
diff --git a/src/types/electron.d.ts b/src/types/electron.d.ts
index 244896d2..ede476fc 100644
--- a/src/types/electron.d.ts
+++ b/src/types/electron.d.ts
@@ -69,6 +69,7 @@ export interface ElectronAPI {
     ignoreUpdate: (version: string) => Promise<{ success: boolean }>
     onDownloadProgress: (callback: (progress: number) => void) => () => void
     onUpdateAvailable: (callback: (info: { version: string; releaseNotes: string }) => void) => () => void
+    getPlatform: () => string
   }
   notification: {
     show: (data: { title: string; content: string; avatarUrl?: string; sessionId: string }) => Promise<{ success?: boolean; error?: string } | void>