diff --git a/LOG_SEARCH_INSTRUCTIONS.md b/LOG_SEARCH_INSTRUCTIONS.md
new file mode 100644
index 00000000..56d946d8
--- /dev/null
+++ b/LOG_SEARCH_INSTRUCTIONS.md
@@ -0,0 +1,96 @@
+# Log Search Instructions - Mark All As Read
+
+**Purpose**: Find the exact error causing mark-all-as-read to fail
+
+---
+
+## 🔍 What to Do
+
+After you do `rm -rf .next && npm run build && npm start` and test "mark all as read", please:
+
+### Option 1: Search for Specific Markers
+
+In your log output, search for these exact strings:
+
+```bash
+# Search for the adapter start marker
+grep "===== markAllAsRead START =====" log
+
+# Search for all notification service logs
+grep "NOTIFICATION_SERVICE.*markAllAsRead" log
+
+# Search for all leantime adapter logs
+grep "LEANTIME_ADAPTER.*markAllAsRead" log
+
+# Search for API logs
+grep "NOTIFICATION_API.*Mark all as read" log
+```
+
+### Option 2: Provide Complete Log Snippet
+
+When you test "mark all as read", copy the **COMPLETE** log output from:
+- **Before**: 5-10 lines before `[NOTIFICATION_API] Mark all as read endpoint called`
+- **After**: 50-100 lines after the failure
+
+This will show us the full flow.
+
+---
+
+## 🎯 What We're Looking For
+
+### Expected Log Sequence
+
+```
+[NOTIFICATION_API] Mark all as read endpoint called
+[NOTIFICATION_API] Mark all as read - Processing { userId: '...', timestamp: '...' }
+[NOTIFICATION_SERVICE] markAllAsRead called for user ...
+[NOTIFICATION_SERVICE] Available adapters: leantime
+[NOTIFICATION_SERVICE] Processing adapter: leantime
+[NOTIFICATION_SERVICE] Adapter leantime is configured: true
+[NOTIFICATION_SERVICE] Calling markAllAsRead on adapter leantime
+[LEANTIME_ADAPTER] ===== markAllAsRead START =====  ← MUST APPEAR
+[LEANTIME_ADAPTER] markAllAsRead called for userId: ...
+[LEANTIME_ADAPTER] API URL: ...
+[LEANTIME_ADAPTER] Has API Token: true
+[LEANTIME_ADAPTER] markAllAsRead - User email: ...
+[LEANTIME_ADAPTER] markAllAsRead - Leantime user ID: ...
+[LEANTIME_ADAPTER] markAllAsRead - Request body: {...}
+[LEANTIME_ADAPTER] markAllAsRead - Response status: XXX
+[LEANTIME_ADAPTER] markAllAsRead - Response body: {...}
+[LEANTIME_ADAPTER] markAllAsRead - API Error: {...}  ← This will show the actual error
+[NOTIFICATION_SERVICE] Adapter leantime markAllAsRead result: false
+```
+
+---
+
+## ❓ Questions
+
+1. **Do you see `[NOTIFICATION_SERVICE] markAllAsRead called for user`?**
+   - If NO → Service layer not being called
+   - If YES → Continue to next question
+
+2. **Do you see `[NOTIFICATION_SERVICE] Calling markAllAsRead on adapter leantime`?**
+   - If NO → Adapter not being called
+   - If YES → Continue to next question
+
+3. **Do you see `===== markAllAsRead START =====`?**
+   - If NO → Adapter method not executing (very strange!)
+   - If YES → We'll see the Leantime API error
+
+---
+
+## 🔧 Quick Test
+
+After restart, run this command to see if the marker appears:
+
+```bash
+# Test mark all as read, then immediately:
+tail -n 200 log | grep -A 50 "Mark all as read"
+```
+
+This will show the last 200 lines of the log, filtered for mark-all-as-read operations, with 50 lines of context after each match.
+
+---
+
+**Status**: Enhanced logging with multiple output methods. Awaiting complete log output to identify the exact failure point.
+
diff --git a/lib/services/notifications/leantime-adapter.ts b/lib/services/notifications/leantime-adapter.ts
index 98403f9a..58fadcc2 100644
--- a/lib/services/notifications/leantime-adapter.ts
+++ b/lib/services/notifications/leantime-adapter.ts
@@ -218,7 +218,10 @@ export class LeantimeAdapter implements NotificationAdapter {
 
   async markAllAsRead(userId: string): Promise<boolean> {
     // CRITICAL: This should ALWAYS appear if method is called
+    // Using multiple logging methods to ensure visibility
+    process.stdout.write(`\n[LEANTIME_ADAPTER] ===== markAllAsRead START =====\n`);
     console.log(`[LEANTIME_ADAPTER] ===== markAllAsRead START =====`);
+    console.error(`[LEANTIME_ADAPTER] ===== markAllAsRead START (via console.error) =====`);
     console.log(`[LEANTIME_ADAPTER] markAllAsRead called for userId: ${userId}`);
     console.log(`[LEANTIME_ADAPTER] API URL: ${this.apiUrl}`);
     console.log(`[LEANTIME_ADAPTER] Has API Token: ${!!this.apiToken}`);