diff --git a/NetworkPkg/WifiConnectionManagerDxe/WifiConnectionMgrDriver.c b/NetworkPkg/WifiConnectionManagerDxe/WifiConnectionMgrDriver.c
index 1431cdc7ea..63b0670c63 100644
--- a/NetworkPkg/WifiConnectionManagerDxe/WifiConnectionMgrDriver.c
+++ b/NetworkPkg/WifiConnectionManagerDxe/WifiConnectionMgrDriver.c
@@ -411,6 +411,7 @@ WifiMgrDxeDriverBindingStop (
   //
   // Close Event
   //
+  gBS->SetTimer (Nic->TickTimer, TimerCancel, 0);
   gBS->CloseEvent (Nic->TickTimer);
 
   //
diff --git a/NetworkPkg/WifiConnectionManagerDxe/WifiConnectionMgrFileUtil.c b/NetworkPkg/WifiConnectionManagerDxe/WifiConnectionMgrFileUtil.c
index 6db1626f2d..0224823431 100644
--- a/NetworkPkg/WifiConnectionManagerDxe/WifiConnectionMgrFileUtil.c
+++ b/NetworkPkg/WifiConnectionManagerDxe/WifiConnectionMgrFileUtil.c
@@ -253,6 +253,7 @@ UpdatePage(
 
     if (Private->FileContext->FileName != NULL) {
       FreePool (Private->FileContext->FileName);
+      Private->FileContext->FileName = NULL;
     }
     Private->FileContext->FileName = FileName;
 
diff --git a/NetworkPkg/WifiConnectionManagerDxe/WifiConnectionMgrHiiConfigAccess.c b/NetworkPkg/WifiConnectionManagerDxe/WifiConnectionMgrHiiConfigAccess.c
index bfb6b6e5ca..d0d55f46da 100644
--- a/NetworkPkg/WifiConnectionManagerDxe/WifiConnectionMgrHiiConfigAccess.c
+++ b/NetworkPkg/WifiConnectionManagerDxe/WifiConnectionMgrHiiConfigAccess.c
@@ -447,6 +447,8 @@ WifiMgrRefreshNetworkList (
       }
       FreePool (AKMListDisplay);
       FreePool (CipherListDisplay);
+      AKMListDisplay    = NULL;
+      CipherListDisplay = NULL;
 
       HiiCreateGotoOpCode (
         StartOpCodeHandle,
@@ -532,6 +534,8 @@ WifiMgrRefreshNetworkList (
       }
       FreePool (AKMListDisplay);
       FreePool (CipherListDisplay);
+      AKMListDisplay    = NULL;
+      CipherListDisplay = NULL;
 
       HiiCreateGotoOpCode (
         StartOpCodeHandle,
@@ -612,6 +616,8 @@ WifiMgrRefreshNetworkList (
       }
       FreePool (AKMListDisplay);
       FreePool (CipherListDisplay);
+      AKMListDisplay    = NULL;
+      CipherListDisplay = NULL;
 
       PortHelpToken = HiiSetString (Private->RegisteredHandle, 0, PortString, NULL);
 
@@ -1657,6 +1663,7 @@ WifiMgrDxeHiiConfigAccessCallback (
 
           ZeroMem (Profile->PrivateKeyData, Profile->PrivateKeyDataSize);
           FreePool (Profile->PrivateKeyData);
+          Profile->PrivateKeyData = NULL;
         }
 
         Status = WifiMgrReadFileToBuffer (
@@ -1700,12 +1707,14 @@ WifiMgrDxeHiiConfigAccessCallback (
 
             ZeroMem (Profile->CACertData, Profile->CACertSize);
             FreePool (Profile->CACertData);
+            Profile->CACertData = NULL;
           }
         } else if (Private->FileType == FileTypeClientCert) {
           if (Profile->ClientCertData != NULL) {
 
             ZeroMem (Profile->ClientCertData, Profile->ClientCertSize);
             FreePool (Profile->ClientCertData);
+            Profile->ClientCertData = NULL;
           }
         } else {
           break;
diff --git a/NetworkPkg/WifiConnectionManagerDxe/WifiConnectionMgrImpl.c b/NetworkPkg/WifiConnectionManagerDxe/WifiConnectionMgrImpl.c
index 52ce18dfd8..9417440ac5 100644
--- a/NetworkPkg/WifiConnectionManagerDxe/WifiConnectionMgrImpl.c
+++ b/NetworkPkg/WifiConnectionManagerDxe/WifiConnectionMgrImpl.c
@@ -212,7 +212,6 @@ WifiMgrOnScanFinished (
     }
   }
 
-  FreePool (Result);
   gBS->SignalEvent (Nic->Private->NetworkListRefreshEvent);
 
   //