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windows/configuration/start-layout-troubleshoot.md

@@ -300,6 +300,33 @@ C:\Windows\System32\tdlrecover.exe -reregister -resetlayout -resetcache
 
 Although a reboot is not required, it may help clear up any residual issues after the command is run.
 
+### Symptoms: Start Menu and Apps cannot start after upgrade to Windows 10 version 1809 when Symantec Endpoint Protection is installed
+
+**Description** Start Menu, Search and Apps do not start after you upgrade a Windows 7-based computer that has Symantec Endpoint Protection installed to Windows 10 version 1809.
+
+**Cause** This occurs because of a failure to load sysfer.dll.  During upgrade, the setup process does not set the privilege group "All Application Packages" on sysfer.dll and other Symantec modules.
+
+**Resolution** This issue was fixed by the Windows Cumulative Update that were released on December 5, 2018—KB4469342 (OS Build 17763.168).
+
+If you have already encountered this issue, use one of the following two options to fix the issue:
+
+**Option 1** Remove sysfer.dll from system32 folder and copy it back. Windows will set privilege automatically.
+
+**Option 2** 
+
+1. Locate the directory C:\Windows\system32.
+
+2. Right-click on sysfer.dll and choose **Properties**.
+
+3. Switch to the **Security** tab.
+
+4. Confirm that **All Application Packages** group is missing.
+
+5. Click **Edit**, and then click **Add** to add the group.
+
+6. Test Start and other Apps.
+
+