Index: Makefile.msc
==================================================================
--- Makefile.msc
+++ Makefile.msc
@@ -468,10 +468,21 @@
 # linker option must be used to mark the executable as runnable
 # only in the context of an application container.
 #
 !IF $(FOR_WINRT)!=0
 LTLINKOPTS = $(LTLINKOPTS) /APPCONTAINER
+!IF "$(VISUALSTUDIOVERSION)"=="12.0"
+!IF "$(PLATFORM)"=="x86"
+LTLINKOPTS = $(LTLINKOPTS) "/LIBPATH:$(VCINSTALLDIR)\lib\store"
+!ELSEIF "$(PLATFORM)"=="x64"
+LTLINKOPTS = $(LTLINKOPTS) "/LIBPATH:$(VCINSTALLDIR)\lib\store\amd64"
+!ELSEIF "$(PLATFORM)"=="ARM"
+LTLINKOPTS = $(LTLINKOPTS) "/LIBPATH:$(VCINSTALLDIR)\lib\store\arm"
+!ELSE
+LTLINKOPTS = $(LTLINKOPTS) "/LIBPATH:$(VCINSTALLDIR)\lib\store"
+!ENDIF
+!ENDIF
 !ENDIF
 
 # If either debugging or symbols are enabled, enable PDBs.
 !IF $(DEBUG)>0 || $(SYMBOLS)!=0
 LDFLAGS = /DEBUG

Index: tool/build-all-msvc.bat
==================================================================
--- tool/build-all-msvc.bat
+++ tool/build-all-msvc.bat
@@ -201,14 +201,22 @@
 SET TOOLPATH=%gawk.exe_PATH%;%tclsh85.exe_PATH%
 
 %_VECHO% ToolPath = '%TOOLPATH%'
 
 REM
-REM NOTE: Check for MSVC 2012 because the Windows SDK directory handling is
-REM       slightly different for that version.
+REM NOTE: Check for MSVC 2012/2013 because the Windows SDK directory handling
+REM       is slightly different for those versions.
 REM
 IF "%VisualStudioVersion%" == "11.0" (
+  REM
+  REM NOTE: If the Windows SDK library path has already been set, do not set
+  REM       it to something else later on.
+  REM
+  IF NOT DEFINED NSDKLIBPATH (
+    SET SET_NSDKLIBPATH=1
+  )
+) ELSE IF "%VisualStudioVersion%" == "12.0" (
   REM
   REM NOTE: If the Windows SDK library path has already been set, do not set
   REM       it to something else later on.
   REM
   IF NOT DEFINED NSDKLIBPATH (
@@ -349,11 +357,16 @@
           IF DEFINED WindowsPhoneKitDir (
             CALL :fn_CopyVariable WindowsPhoneKitDir NSDKLIBPATH
             CALL :fn_AppendVariable NSDKLIBPATH \lib\x86
           ) ELSE IF DEFINED WindowsSdkDir (
             CALL :fn_CopyVariable WindowsSdkDir NSDKLIBPATH
-            CALL :fn_AppendVariable NSDKLIBPATH \lib\win8\um\x86
+
+            IF "%VisualStudioVersion%" == "12.0" (
+              CALL :fn_AppendVariable NSDKLIBPATH \lib\winv6.3\um\x86
+            ) ELSE (
+              CALL :fn_AppendVariable NSDKLIBPATH \lib\win8\um\x86
+            )
           )
         )
 
         REM
         REM NOTE: Unless prevented from doing so, invoke NMAKE with the MSVC

Index: tool/mkvsix.tcl
==================================================================
--- tool/mkvsix.tcl
+++ tool/mkvsix.tcl
@@ -63,16 +63,16 @@
 # top-level directory containing the directories and files organized into a
 # tree as described in item 6 of the PREREQUISITES section, above.  The second
 # argument is optional and if present must contain the name of the directory
 # containing the root of the source tree for SQLite.  The third argument is
 # optional and if present must contain the flavor the VSIX package to build.
-# Currently, the only supported package flavors are "WinRT" and "WP80".  The
-# fourth argument is optional and if present must be a string containing a list
-# of platforms to include in the VSIX package.  The format of the platform list
-# string is "platform1,platform2,platform3".  Typically, when on Windows, this
-# script is executed using commands similar to the following from a normal
-# Windows command prompt:
+# Currently, the only supported package flavors are "WinRT", "WinRT81", and
+# "WP80".  The fourth argument is optional and if present must be a string
+# containing a list of platforms to include in the VSIX package.  The format
+# of the platform list string is "platform1,platform2,platform3".  Typically,
+# when on Windows, this script is executed using commands similar to the
+# following from a normal Windows command prompt:
 #
 #                         CD /D C:\dev\sqlite\core
 #                         tclsh85 tool\mkvsix.tcl C:\Temp
 #
 # In the example above, "C:\dev\sqlite\core" represents the root of the source
@@ -253,22 +253,36 @@
 
 if {[string equal -nocase $packageFlavor WinRT]} then {
   set shortName SQLite.WinRT
   set displayName "SQLite for Windows Runtime"
   set targetPlatformIdentifier Windows
+  set targetPlatformVersion v8.0
+  set minVsVersion 11.0
   set extraSdkPath ""
   set extraFileListAttributes [appendArgs \
       "\r\n    " {AppliesTo="WindowsAppContainer"} \
       "\r\n    " {DependsOn="Microsoft.VCLibs, version=11.0"}]
+} elseif {[string equal -nocase $packageFlavor WinRT81]} then {
+  set shortName SQLite.WinRT81
+  set displayName "SQLite for Windows Runtime (Windows 8.1)"
+  set targetPlatformIdentifier Windows
+  set targetPlatformVersion v8.1
+  set minVsVersion 12.0
+  set extraSdkPath ""
+  set extraFileListAttributes [appendArgs \
+      "\r\n    " {AppliesTo="WindowsAppContainer"} \
+      "\r\n    " {DependsOn="Microsoft.VCLibs, version=12.0"}]
 } elseif {[string equal -nocase $packageFlavor WP80]} then {
   set shortName SQLite.WP80
   set displayName "SQLite for Windows Phone"
   set targetPlatformIdentifier "Windows Phone"
+  set targetPlatformVersion v8.0
+  set minVsVersion 11.0
   set extraSdkPath "\\..\\$targetPlatformIdentifier"
   set extraFileListAttributes ""
 } else {
-  fail "unsupported package flavor, must be \"WinRT\" or \"WP80\""
+  fail "unsupported package flavor, must be \"WinRT\", \"WinRT81\", or \"WP80\""
 }
 
 if {$argc >= 4} then {
   set platformNames [list]
 

Index: tool/win/sqlite.vsix
==================================================================
--- tool/win/sqlite.vsix
+++ tool/win/sqlite.vsix
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