diff --git a/source/nvda.pyw b/source/nvda.pyw
index 74f7c5687d6..6c602e51bdd 100755
--- a/source/nvda.pyw
+++ b/source/nvda.pyw
@@ -60,7 +60,7 @@ except:
 
 # Check OS version requirements
 import winVersion
-if not winVersion.canRunVc2010Builds():
+if not winVersion.isSupportedOS():
 	winUser.MessageBox(0, unicode(ctypes.FormatError(winUser.ERROR_OLD_WIN_VERSION)), None, winUser.MB_ICONERROR)
 	sys.exit(1)
 
diff --git a/source/winVersion.py b/source/winVersion.py
index a2a39b59c1e..e32e0e6b755 100644
--- a/source/winVersion.py
+++ b/source/winVersion.py
@@ -16,20 +16,12 @@
 		winVersionText+=".%d"%winVersion.service_pack_minor
 winVersionText+=" %s" % ("workstation","domain controller","server")[winVersion.product_type-1]
 
+def isSupportedOS():
+	# NVDA can only run on Windows 7 Service pack 1 and above
+	return (winVersion.major,winVersion.minor,winVersion.service_pack_major) >= (6,1,1)
+
 def canRunVc2010Builds():
-	if (winVersion.major, winVersion.minor) < (5, 1):
-		# Earlier than Windows XP.
-		return False
-	if winVersion.major == 5:
-		if winVersion.minor == 1:
-			# Windows XP for x86.
-			return winVersion.service_pack_major >= 2
-		if winVersion.minor == 2 and winVersion.product_type!=1: 
-			# Windows Server 2003.
-			# (5.2 x64 is Windows XP x64. Its RTM is based on Server 2003 sp1,
-			# so all versions should be fine.)
-			return winVersion.service_pack_major >= 1
-	return True
+	return isSupportedOS()
 
 UWP_OCR_DATA_PATH = os.path.expandvars(r"$windir\OCR")
 def isUwpOcrAvailable():
diff --git a/user_docs/en/userGuide.t2t b/user_docs/en/userGuide.t2t
index 0197a548cba..9fc632c95d1 100644
--- a/user_docs/en/userGuide.t2t
+++ b/user_docs/en/userGuide.t2t
@@ -59,11 +59,9 @@ This applies to both original and modified copies of this software, plus any der
 For further details, you can [view the full licence. http://www.gnu.org/licenses/old-licenses/gpl-2.0.html]
 
 + System Requirements +
-- Operating Systems: all 32-bit and 64-bit editions of Windows XP, Windows Vista, Windows 7, Windows 8, Windows 8.1 and Windows 10 (including Server operating Systems)
- - For Windows XP 32-bit, NVDA requires Service Pack 2 or higher.
- - For Windows Server 2003, NVDA requires Service Pack 1 or higher.
- - For Windows Vista, NVDA requires Service Pack 2 and the [KB2763674 https://support.microsoft.com/en-us/kb/2763674] update.
- Both of these should be installed if all available updates are applied via Windows Update.
+- Operating Systems: all 32-bit and 64-bit editions of Windows 7, Windows 8, Windows 8.1, Windows 10, and all Server Operating Systems starting from Windows Server 2008 R2.
+ - For Windows 7, NVDA requires Service Pack 1 or higher.
+ - For Windows Server 2008 R2, NVDA requires Service Pack 1 or higher.
 - Memory: 256 mb or more of RAM
 - Processor speed: 1.0 ghz or above
 - About 90 MB of storage space.