5 files changed, 24 insertions, 9 deletions
diff --git a/doc/chm/VeraCrypt User Guide.chm b/doc/chm/VeraCrypt User Guide.chm
index f774975b..39a740f0 100644
--- a/doc/chm/VeraCrypt User Guide.chm
+++ b/doc/chm/VeraCrypt User Guide.chm
diff --git a/doc/html/Release Notes.html b/doc/html/Release Notes.html
index 596d337e..6afc723f 100644
--- a/doc/html/Release Notes.html
+++ b/doc/html/Release Notes.html
@@ -39,10 +39,16 @@
 <strong>Note to users who created volumes with 1.17 version of VeraCrypt or earlier: </strong><br/>
 <span style="color:#ff0000;">To avoid hinting whether your volumes contain a hidden volume or not, or if you depend on plausible deniability when using hidden volumes/OS, then you must recreate both the outer and hidden volumes including system encryption and hidden OS, discarding existing volumes created prior to 1.18a version of VeraCrypt.</span></li>
 </p>
-<p><strong style="text-align:left">1.25.6</strong> (January 1<sup>st</sup>, 2022):</p>
+<p><strong style="text-align:left">1.25.6</strong> (January 3<sup>rd</sup>, 2022):</p>
 <ul>
 <li><strong>Windows:</strong>
 <ul>
+<li>Restore support of Windows Vista, Windows 7 and Windows 8/8.1.
+<ul>
+<li>Windows 7 support requires that either KB3033929 or KB4474419 is installed.</li>
+<li>Windows Vista support requires that either KB4039648 or KB4474419 is installed.</li>
+</ul>
+</li>
 <li>MSI installation only: Fix double-clicking .hc file container inserting %1 instead of volume name in path field.</li>
 <li>Advanced users: Add registry settings to control driver internal encryption queue to allow tuning performance for SSD disks and having better stability under heavy load.
 <ul>
diff --git a/doc/html/Supported Operating Systems.html b/doc/html/Supported Operating Systems.html
index 4850301b..9814913d 100644
--- a/doc/html/Supported Operating Systems.html
+++ b/doc/html/Supported Operating Systems.html
@@ -37,8 +37,15 @@ VeraCrypt currently supports the following operating systems:</div>
 <li style="text-align:left; margin-top:0px; margin-bottom:0px; padding-top:0px; padding-bottom:0px">
 Windows 11 </li><li style="text-align:left; margin-top:0px; margin-bottom:0px; padding-top:0px; padding-bottom:0px">
 Windows 10 </li><li style="text-align:left; margin-top:0px; margin-bottom:0px; padding-top:0px; padding-bottom:0px">
-Windows Server 2016 </li><li style="text-align:left; margin-top:0px; margin-bottom:0px; padding-top:0px; padding-bottom:0px">
+Windows 8 and 8.1 </li><li style="text-align:left; margin-top:0px; margin-bottom:0px; padding-top:0px; padding-bottom:0px">
+Windows 7 (KB3033929 or KB4474419 must be installed)</li><li style="text-align:left; margin-top:0px; margin-bottom:0px; padding-top:0px; padding-bottom:0px">
+Windows Vista (KB4039648 or KB4474419 must be installed)</li><li style="text-align:left; margin-top:0px; margin-bottom:0px; padding-top:0px; padding-bottom:0px">
 Windows XP </li><li style="text-align:left; margin-top:0px; margin-bottom:0px; padding-top:0px; padding-bottom:0px">
+Windows Server 2016 </li><li style="text-align:left; margin-top:0px; margin-bottom:0px; padding-top:0px; padding-bottom:0px">
+Windows Server 2012 </li><li style="text-align:left; margin-top:0px; margin-bottom:0px; padding-top:0px; padding-bottom:0px">
+Windows Server 2008 R2 (64-bit) (KB3033929 or KB4474419 must be installed)</li><li style="text-align:left; margin-top:0px; margin-bottom:0px; padding-top:0px; padding-bottom:0px">
+Windows Server 2008 (KB4039648 or KB4474419 must be installed)</li><li style="text-align:left; margin-top:0px; margin-bottom:0px; padding-top:0px; padding-bottom:0px">
+Windows Server 2003 </li><li style="text-align:left; margin-top:0px; margin-bottom:0px; padding-top:0px; padding-bottom:0px">
 Mac OS X 12 Monterey </li><li style="text-align:left; margin-top:0px; margin-bottom:0px; padding-top:0px; padding-bottom:0px">
 Mac OS X 11 Big Sur </li><li style="text-align:left; margin-top:0px; margin-bottom:0px; padding-top:0px; padding-bottom:0px">
 Mac OS X 10.15 Catalina </li><li style="text-align:left; margin-top:0px; margin-bottom:0px; padding-top:0px; padding-bottom:0px">
@@ -52,8 +59,6 @@ Linux x86 (32-bit and 64-bit versions, kernel 2.6 or compatible) </li><li style=
 FreeBSD x86 (32-bit and 64-bit versions, starting from version 11) </li><li style="text-align:left; margin-top:0px; margin-bottom:0px; padding-top:0px; padding-bottom:0px">
 Raspberry Pi OS (32-bit and 64-bit) </li></ul>
 <div style="text-align:left; margin-top:19px; margin-bottom:19px; padding-top:0px; padding-bottom:0px">
-<span style="text-align:left;">Note: VeraCrypt 1.24-Update7 is the last version that supports the following Windows versions: Windows 8.1, Windows 8, Windows7, Windows Vista, Windows Server 2012, Windows Server 2008 R2 (64-bit), Windows Server 2008 and Windows Server 2003.</span></div>
-<div style="text-align:left; margin-top:19px; margin-bottom:19px; padding-top:0px; padding-bottom:0px">
 <span style="text-align:left;">Note: VeraCrypt 1.24-Update8 is the last version that supports Mac OS X 10.7 Lion and Mac OS X 10.8 Mountain Lion.</span></div>
 <div style="text-align:left; margin-top:19px; margin-bottom:19px; padding-top:0px; padding-bottom:0px">
 <br style="text-align:left">
diff --git a/doc/html/Supported Systems for System Encryption.html b/doc/html/Supported Systems for System Encryption.html
index dd6b3749..67e5d2d4 100644
--- a/doc/html/Supported Systems for System Encryption.html
+++ b/doc/html/Supported Systems for System Encryption.html
@@ -43,10 +43,14 @@ VeraCrypt can currently encrypt the following operating systems:</div>
 <li style="text-align:left; margin-top:0px; margin-bottom:0px; padding-top:0px; padding-bottom:0px">
 Windows 11 </li><li style="text-align:left; margin-top:0px; margin-bottom:0px; padding-top:0px; padding-bottom:0px">
 Windows 10 </li><li style="text-align:left; margin-top:0px; margin-bottom:0px; padding-top:0px; padding-bottom:0px">
-Windows Server 2016 </li><li style="text-align:left; margin-top:0px; margin-bottom:0px; padding-top:0px; padding-bottom:0px">
-Windows XP </li></ul>
-<div style="text-align:left; margin-top:19px; margin-bottom:19px; padding-top:0px; padding-bottom:0px">
-<span style="text-align:left;">Note: VeraCrypt 1.24-Update7 is the last version that supports System Encryption for the following Windows versions: Windows 8.1, Windows 8, Windows7, Windows Vista, Windows Server 2012, Windows Server 2008 R2 (64-bit), Windows Server 2008 and Windows Server 2003.</span></div>
+Windows 8 and 8.1 </li><li style="text-align:left; margin-top:0px; margin-bottom:0px; padding-top:0px; padding-bottom:0px">
+Windows 7 (KB3033929 or KB4474419 must be installed)</li><li style="text-align:left; margin-top:0px; margin-bottom:0px; padding-top:0px; padding-bottom:0px">
+Windows Vista SP2 (KB4039648 or KB4474419 must be installed) </li><li style="text-align:left; margin-top:0px; margin-bottom:0px; padding-top:0px; padding-bottom:0px">
+Windows XP </li><li style="text-align:left; margin-top:0px; margin-bottom:0px; padding-top:0px; padding-bottom:0px">
+Windows Server 2012 </li><li style="text-align:left; margin-top:0px; margin-bottom:0px; padding-top:0px; padding-bottom:0px">
+Windows Server 2008 R2 (64-bit) (KB3033929 or KB4474419 must be installed)</li><li style="text-align:left; margin-top:0px; margin-bottom:0px; padding-top:0px; padding-bottom:0px">
+Windows Server 2008 (KB4039648 or KB4474419 must be installed)</li><li style="text-align:left; margin-top:0px; margin-bottom:0px; padding-top:0px; padding-bottom:0px">
+Windows Server 2003 </li></ul>
 <div style="text-align:left; margin-top:19px; margin-bottom:19px; padding-top:0px; padding-bottom:0px">
 <span style="text-align:left; font-size:10px; line-height:12px">Note: The following operating systems (among others) are not supported: Windows RT, Windows 2003 IA-64, Windows 2008 IA-64, Windows XP IA-64, and the Embedded/Tablet versions of Windows.
 </span></div>
diff --git a/src/Common/Tcdefs.h b/src/Common/Tcdefs.h
index f08b6205..64f56501 100644
--- a/src/Common/Tcdefs.h
+++ b/src/Common/Tcdefs.h
@@ -69,7 +69,7 @@ extern unsigned short _rotl16(unsigned short value, unsigned char shift);
 #define VERSION_NUM						0x0125
 
 // Release date
-#define TC_STR_RELEASE_DATE			L"January 1, 2022"
+#define TC_STR_RELEASE_DATE			L"January 3, 2022"
 #define TC_RELEASE_DATE_YEAR			2022
 #define TC_RELEASE_DATE_MONTH			 01