From 549e1faa09464eeda591b7db35d9173a35bb3f63 Mon Sep 17 00:00:00 2001
From: Daniel <845765@qq.com>
Date: Tue, 6 Jan 2026 17:37:51 +0800
Subject: [PATCH] :bug: Multiple workspace access authentication error
 https://github.com/siyuan-note/siyuan/issues/16786

Signed-off-by: Daniel <845765@qq.com>
---
 kernel/model/conf.go | 36 ++++++++++++++++++++++++++++++++++--
 1 file changed, 34 insertions(+), 2 deletions(-)

diff --git a/kernel/model/conf.go b/kernel/model/conf.go
index 6871f946a..960c4e44a 100644
--- a/kernel/model/conf.go
+++ b/kernel/model/conf.go
@@ -587,8 +587,13 @@ func InitConf() {
 
 	Conf.DataIndexState = 0
 
-	if "" == Conf.CookieKey {
-		Conf.CookieKey = gulu.Rand.String(16)
+	if cookieKey := readCookieKey(); "" != cookieKey {
+		Conf.CookieKey = cookieKey
+	} else {
+		if "" == Conf.CookieKey {
+			Conf.CookieKey = gulu.Rand.String(16)
+		}
+		writeCookieKey(Conf.CookieKey)
 	}
 
 	Conf.Save()
@@ -600,6 +605,33 @@ func InitConf() {
 	go util.InitTesseract()
 }
 
+func readCookieKey() (cookieKey string) {
+	cookieKeyPath := filepath.Join(util.HomeDir, ".config", "siyuan", "cookie.key")
+	if !gulu.File.IsExist(cookieKeyPath) {
+		return
+	}
+
+	data, err := os.ReadFile(cookieKeyPath)
+	if err != nil {
+		logging.LogErrorf("read cookie key file [%s] failed: %s", cookieKeyPath, err)
+		return
+	}
+
+	cookieKey = string(bytes.TrimSpace(data))
+	return
+}
+
+func writeCookieKey(cookieKey string) {
+	cookieKeyPath := filepath.Join(util.HomeDir, ".config", "siyuan", "cookie.key")
+	if gulu.File.IsExist(cookieKeyPath) {
+		return
+	}
+
+	if err := os.WriteFile(cookieKeyPath, []byte(cookieKey), 0644); err != nil {
+		logging.LogErrorf("save cookie key file [%s] failed: %s", cookieKeyPath, err)
+	}
+}
+
 func initLang() {
 	p := filepath.Join(util.WorkingDir, "appearance", "langs")
 	dir, err := os.Open(p)