diff --git a/reactos/base/applications/mstsc/connectdialog.c b/reactos/base/applications/mstsc/connectdialog.c
index 92f0b4055d3..3a12ab9267a 100644
--- a/reactos/base/applications/mstsc/connectdialog.c
+++ b/reactos/base/applications/mstsc/connectdialog.c
@@ -1089,9 +1089,9 @@ DlgProc(HWND hDlg,
 
         case WM_NOTIFY:
         {
-            INT idctrl;
+            //INT idctrl;
             LPNMHDR pnmh;
-            idctrl = (int)wParam;
+            //idctrl = (int)wParam;
             pnmh = (LPNMHDR)lParam;
             if (//(pnmh->hwndFrom == pInfo->hSelf) &&
                 (pnmh->idFrom == IDC_TAB) &&
diff --git a/reactos/base/applications/mstsc/orders.c b/reactos/base/applications/mstsc/orders.c
index ea5c855652e..029dd5274c4 100644
--- a/reactos/base/applications/mstsc/orders.c
+++ b/reactos/base/applications/mstsc/orders.c
@@ -943,6 +943,7 @@ process_bmpcache(STREAM s)
 	in_uint8p(s, data, size);
 
 	DEBUG(("BMPCACHE(cx=%d,cy=%d,id=%d,idx=%d,bpp=%d,size=%d,pad1=%d,bufsize=%d,pad2=%d,rs=%d,fs=%d)\n", width, height, cache_id, cache_idx, bpp, size, pad1, bufsize, pad2, row_size, final_size));
+	(void)pad1; (void)pad2;
 
 	bmpdata = (uint8 *) xmalloc(width * height * Bpp);
 
diff --git a/reactos/base/setup/vmwinst/vmwinst.c b/reactos/base/setup/vmwinst/vmwinst.c
index 4d2f0e5cd7e..d06fbdad9d4 100644
--- a/reactos/base/setup/vmwinst/vmwinst.c
+++ b/reactos/base/setup/vmwinst/vmwinst.c
@@ -169,14 +169,16 @@ CenterWindow(HWND hWnd)
 static BOOL
 IsVMwareCDInDrive(WCHAR *Drv)
 {
+#if CHECKDRIVETYPE
     static WCHAR Drive[4] = L"X:\\";
+#endif
     WCHAR Current;
 
     *Drv = L'\0';
     for(Current = 'C'; Current <= 'Z'; Current++)
     {
-        Drive[0] = Current;
 #if CHECKDRIVETYPE
+        Drive[0] = Current;
         if(GetDriveType(Drive) == DRIVE_CDROM)
         {
 #endif
diff --git a/reactos/dll/ntdll/csr/capture.c b/reactos/dll/ntdll/csr/capture.c
index 3418123f7c7..d86133c2d19 100644
--- a/reactos/dll/ntdll/csr/capture.c
+++ b/reactos/dll/ntdll/csr/capture.c
@@ -44,6 +44,7 @@ CsrProbeForRead(IN PVOID Address,
     Data = *Pointer;
     Pointer = (PUCHAR)((ULONG)Address + Length -1);
     Data = *Pointer;
+    (void)Data;
 }
 
 /*
diff --git a/reactos/dll/win32/browseui/CMakeLists.txt b/reactos/dll/win32/browseui/CMakeLists.txt
index 775c9e7f817..035df0bd5da 100644
--- a/reactos/dll/win32/browseui/CMakeLists.txt
+++ b/reactos/dll/win32/browseui/CMakeLists.txt
@@ -45,6 +45,7 @@ list(APPEND SOURCE
     ${CMAKE_CURRENT_BINARY_DIR}/browseui.def)
 
 add_library(browseui SHARED ${SOURCE})
+allow_warnings(browseui)
 set_module_type(browseui win32dll UNICODE)
 
 target_link_libraries(browseui
diff --git a/reactos/dll/win32/shell32/CMakeLists.txt b/reactos/dll/win32/shell32/CMakeLists.txt
index c915f757a4c..a9207a6d980 100644
--- a/reactos/dll/win32/shell32/CMakeLists.txt
+++ b/reactos/dll/win32/shell32/CMakeLists.txt
@@ -74,7 +74,7 @@ list(APPEND SOURCE
     ${CMAKE_CURRENT_BINARY_DIR}/shell32.def)
 
 add_library(shell32 SHARED ${SOURCE})
-
+allow_warnings(shell32)
 set_module_type(shell32 win32dll UNICODE)
 
 target_link_libraries(shell32
diff --git a/reactos/dll/win32/wdmaud.drv/mmixer.c b/reactos/dll/win32/wdmaud.drv/mmixer.c
index a98418aa792..24d4b93318e 100644
--- a/reactos/dll/win32/wdmaud.drv/mmixer.c
+++ b/reactos/dll/win32/wdmaud.drv/mmixer.c
@@ -783,10 +783,10 @@ IoStreamingThread(
     LPVOID lpParameter)
 {
     DWORD Length;
-    MMRESULT Result;
+    //MMRESULT Result;
     LPIO_PACKET Packet = (LPIO_PACKET)lpParameter;
 
-    Result =  SyncOverlappedDeviceIoControl(Packet->hDevice,
+    /*Result = */ SyncOverlappedDeviceIoControl(Packet->hDevice,
                     Packet->IoCtl,
                     NULL,
                     0,
diff --git a/reactos/drivers/wdm/audio/backpln/portcls/miniport_dmus.cpp b/reactos/drivers/wdm/audio/backpln/portcls/miniport_dmus.cpp
index 92eae0f9899..d3f8b8a29db 100644
--- a/reactos/drivers/wdm/audio/backpln/portcls/miniport_dmus.cpp
+++ b/reactos/drivers/wdm/audio/backpln/portcls/miniport_dmus.cpp
@@ -878,13 +878,13 @@ SynchronizedDMusMPUWrite
     ASSERT(context->BytesRead);
 
     PUCHAR  pChar = PUCHAR(context->BufferAddress);
-    NTSTATUS ntStatus,readStatus;
+    NTSTATUS ntStatus; // , readStatus
     ntStatus = STATUS_SUCCESS;
     //
     // while we're not there yet, and
     // while we don't have to wait on an aligned byte (including 0)
     // (we never wait on a byte.  Better to come back later)
-    readStatus = DMusMPUInterruptServiceRoutine(InterruptSync,PVOID(context->Miniport));
+    /*readStatus = */ DMusMPUInterruptServiceRoutine(InterruptSync,PVOID(context->Miniport));
     while (  (*(context->BytesRead) < context->Length)
           && (  TryMPU(context->PortBase) 
              || (*(context->BytesRead)%3)
@@ -903,7 +903,7 @@ SynchronizedDMusMPUWrite
             break;
         }
     }
-    readStatus = DMusMPUInterruptServiceRoutine(InterruptSync,PVOID(context->Miniport));
+    /*readStatus = */ DMusMPUInterruptServiceRoutine(InterruptSync,PVOID(context->Miniport));
     return ntStatus;
 }
 
diff --git a/reactos/include/reactos/libs/sound/mmebuddy.h b/reactos/include/reactos/libs/sound/mmebuddy.h
index aadbb3ae617..cbbb7fd46fd 100644
--- a/reactos/include/reactos/libs/sound/mmebuddy.h
+++ b/reactos/include/reactos/libs/sound/mmebuddy.h
@@ -79,7 +79,7 @@
     #define SND_ERR(...) do {} while ( 0 )
     #define SND_WARN(...) do {} while ( 0 )
     #define SND_TRACE(...) do {} while ( 0 )
-    #define SND_ASSERT(condition) do {} while ( 0 )
+    #define SND_ASSERT(condition) do {(void)(condition);} while ( 0 )
     #define DUMP_WAVEHDR_QUEUE(condition) do {} while ( 0 )
 #endif
 
diff --git a/reactos/lib/pseh/framebased.c b/reactos/lib/pseh/framebased.c
index 121cb90d9e0..d2b845ce9b1 100644
--- a/reactos/lib/pseh/framebased.c
+++ b/reactos/lib/pseh/framebased.c
@@ -470,14 +470,14 @@ void _SEH_FASTCALL _SEHEnterFrame_f(_SEHPortableFrame_t * frame)
 
 void _SEH_FASTCALL _SEHLeaveFrame_f(void)
 {
-	_SEHPortableFrame_t * frame;
+	/* _SEHPortableFrame_t * frame;
 
 	frame = _SEH_CONTAINING_RECORD
 	(
 		_SEHCurrentRegistration(),
 		_SEHPortableFrame_t,
 		SPF_Registration
-	);
+	); */
 
 	/* ASSERT(frame); */
 	/* ASSERT(frame->SPF_TopTryLevel == NULL) */