diff --git a/doc/src/sgml/install-windows.sgml b/doc/src/sgml/install-windows.sgml
index bcfd5a1a106..66567d17a04 100644
--- a/doc/src/sgml/install-windows.sgml
+++ b/doc/src/sgml/install-windows.sgml
@@ -82,11 +82,7 @@
   as well as standalone Windows SDK releases 8.1a to 10.
   64-bit PostgreSQL builds are supported with
   <productname>Microsoft Windows SDK</productname> version 8.1a to 10 or
-  <productname>Visual Studio 2013</productname> and above. Compilation
-  is supported down to <productname>Windows 7</productname> and
-  <productname>Windows Server 2008 R2 SP1</productname> when building with
-  <productname>Visual Studio 2013</productname> to
-  <productname>Visual Studio 2022</productname>.
+  <productname>Visual Studio 2013</productname> and above.
    <!--
        For 2013 requirements:
        https://docs.microsoft.com/en-us/visualstudio/productinfo/vs2013-sysrequirements-vs
@@ -358,8 +354,7 @@ $ENV{MSBFLAGS}="/m";
   <title>Special Considerations for 64-Bit Windows</title>
 
   <para>
-   PostgreSQL will only build for the x64 architecture on 64-bit Windows, there
-   is no support for Itanium processors.
+   PostgreSQL will only build for the x64 architecture on 64-bit Windows.
   </para>
 
   <para>
diff --git a/doc/src/sgml/installation.sgml b/doc/src/sgml/installation.sgml
index c5850780291..c12de7896c5 100644
--- a/doc/src/sgml/installation.sgml
+++ b/doc/src/sgml/installation.sgml
@@ -2136,7 +2136,7 @@ export MANPATH
 
   <para>
    <productname>PostgreSQL</productname> can be expected to work on these operating
-   systems: Linux (all recent distributions), Windows (XP and later),
+   systems: Linux (all recent distributions), Windows (10 and later),
    FreeBSD, OpenBSD, NetBSD, macOS, AIX, HP/UX, and Solaris.
    Other Unix-like systems may also work but are not currently
    being tested.  In most cases, all CPU architectures supported by
@@ -2323,16 +2323,15 @@ ERROR:  could not load library "/opt/dbs/pgsql/lib/plperl.so": Bad address
      <listitem>
       <para>
        The <command>adduser</command> command is not supported; use
-       the appropriate user management application on Windows NT,
-       2000, or XP.  Otherwise, skip this step.
+       the appropriate user management application on Windows.
+       Otherwise, skip this step.
       </para>
      </listitem>
 
      <listitem>
       <para>
        The <command>su</command> command is not supported; use ssh to
-       simulate su on Windows NT, 2000, or XP. Otherwise, skip this
-       step.
+       simulate su on Windows. Otherwise, skip this step.
       </para>
      </listitem>
 
diff --git a/src/backend/main/main.c b/src/backend/main/main.c
index c43a527d3f9..dd82722ee31 100644
--- a/src/backend/main/main.c
+++ b/src/backend/main/main.c
@@ -290,23 +290,6 @@ startup_hacks(const char *progname)
 		_CrtSetReportFile(_CRT_ASSERT, _CRTDBG_FILE_STDERR);
 		_CrtSetReportMode(_CRT_WARN, _CRTDBG_MODE_FILE | _CRTDBG_MODE_DEBUG);
 		_CrtSetReportFile(_CRT_WARN, _CRTDBG_FILE_STDERR);
-
-#if defined(_M_AMD64) && _MSC_VER == 1800
-
-		/*----------
-		 * Avoid crashing in certain floating-point operations if we were
-		 * compiled for x64 with MS Visual Studio 2013 and are running on
-		 * Windows prior to 7/2008R2 SP1 on an AVX2-capable CPU.
-		 *
-		 * Ref: https://connect.microsoft.com/VisualStudio/feedback/details/811093/visual-studio-2013-rtm-c-x64-code-generation-bug-for-avx2-instructions
-		 *----------
-		 */
-		if (!IsWindows7SP1OrGreater())
-		{
-			_set_FMA3_enable(0);
-		}
-#endif							/* defined(_M_AMD64) && _MSC_VER == 1800 */
-
 	}
 #endif							/* WIN32 */
 
diff --git a/src/backend/utils/adt/pg_locale.c b/src/backend/utils/adt/pg_locale.c
index ea42e70e43b..5cf5dd5f87d 100644
--- a/src/backend/utils/adt/pg_locale.c
+++ b/src/backend/utils/adt/pg_locale.c
@@ -1719,7 +1719,7 @@ get_collation_actual_version(char collprovider, const char *collcollate)
 		else
 			ereport(ERROR,
 					(errmsg("could not load locale \"%s\"", collcollate)));
-#elif defined(WIN32) && _WIN32_WINNT >= 0x0600
+#elif defined(WIN32)
 		/*
 		 * If we are targeting Windows Vista and above, we can ask for a name
 		 * given a collation name (earlier versions required a location code
@@ -1747,7 +1747,7 @@ get_collation_actual_version(char collprovider, const char *collcollate)
 							collcollate,
 							GetLastError())));
 		}
-		collversion = psprintf("%d.%d,%d.%d",
+		collversion = psprintf("%ld.%ld,%ld.%ld",
 							   (version.dwNLSVersion >> 8) & 0xFFFF,
 							   version.dwNLSVersion & 0xFF,
 							   (version.dwDefinedVersion >> 8) & 0xFFFF,
diff --git a/src/bin/pg_ctl/pg_ctl.c b/src/bin/pg_ctl/pg_ctl.c
index dd78e5bc660..ef58883a5c2 100644
--- a/src/bin/pg_ctl/pg_ctl.c
+++ b/src/bin/pg_ctl/pg_ctl.c
@@ -1896,17 +1896,8 @@ CreateRestrictedProcess(char *cmd, PROCESS_INFORMATION *processInfo, bool as_ser
 	/* Verify that we found all functions */
 	if (_IsProcessInJob == NULL || _CreateJobObject == NULL || _SetInformationJobObject == NULL || _AssignProcessToJobObject == NULL || _QueryInformationJobObject == NULL)
 	{
-		/*
-		 * IsProcessInJob() is not available on < WinXP, so there is no need
-		 * to log the error every time in that case
-		 */
-		if (IsWindowsXPOrGreater())
-
-			/*
-			 * Log error if we can't get version, or if we're on WinXP/2003 or
-			 * newer
-			 */
-			write_stderr(_("%s: WARNING: could not locate all job object functions in system API\n"), progname);
+		/* Log error if we can't get version */
+		write_stderr(_("%s: WARNING: could not locate all job object functions in system API\n"), progname);
 	}
 	else
 	{
@@ -1946,19 +1937,6 @@ CreateRestrictedProcess(char *cmd, PROCESS_INFORMATION *processInfo, bool as_ser
 						JOB_OBJECT_UILIMIT_EXITWINDOWS | JOB_OBJECT_UILIMIT_READCLIPBOARD |
 						JOB_OBJECT_UILIMIT_SYSTEMPARAMETERS | JOB_OBJECT_UILIMIT_WRITECLIPBOARD;
 
-					if (as_service)
-					{
-						if (!IsWindows7OrGreater())
-						{
-							/*
-							 * On Windows 7 (and presumably later),
-							 * JOB_OBJECT_UILIMIT_HANDLES prevents us from
-							 * starting as a service. So we only enable it on
-							 * Vista and earlier (version <= 6.0)
-							 */
-							uiRestrictions.UIRestrictionsClass |= JOB_OBJECT_UILIMIT_HANDLES;
-						}
-					}
 					_SetInformationJobObject(job, JobObjectBasicUIRestrictions, &uiRestrictions, sizeof(uiRestrictions));
 
 					securityLimit.SecurityLimitFlags = JOB_OBJECT_SECURITY_NO_ADMIN | JOB_OBJECT_SECURITY_ONLY_TOKEN;
diff --git a/src/include/port/win32.h b/src/include/port/win32.h
index c6213c77c3a..5f3b17a5008 100644
--- a/src/include/port/win32.h
+++ b/src/include/port/win32.h
@@ -11,24 +11,13 @@
 
 /*
  * Make sure _WIN32_WINNT has the minimum required value.
- * Leave a higher value in place. When building with at least Visual
- * Studio 2015 the minimum requirement is Windows Vista (0x0600) to
- * get support for GetLocaleInfoEx() with locales. For everything else
- * the minimum version is Windows XP (0x0501).
+ * Leave a higher value in place.  The minimum requirement is Windows 10.
  */
-#if defined(_MSC_VER) && _MSC_VER >= 1900
-#define MIN_WINNT 0x0600
-#else
-#define MIN_WINNT 0x0501
-#endif
-
-#if defined(_WIN32_WINNT) && _WIN32_WINNT < MIN_WINNT
+#ifdef _WIN32_WINNT
 #undef _WIN32_WINNT
 #endif
 
-#ifndef _WIN32_WINNT
-#define _WIN32_WINNT MIN_WINNT
-#endif
+#define _WIN32_WINNT 0x0A00
 
 /*
  * We need to prevent <crtdefs.h> from defining a symbol conflicting with