diff --git a/doc/chm/VeraCrypt User Guide.chm b/doc/chm/VeraCrypt User Guide.chm
index f774975b..39a740f0 100644
Binary files a/doc/chm/VeraCrypt User Guide.chm and b/doc/chm/VeraCrypt User Guide.chm differ
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 @@
Note to users who created volumes with 1.17 version of VeraCrypt or earlier:
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.
-1.25.6 (January 1st, 2022):
+1.25.6 (January 3rd, 2022):
- Windows:
+- Restore support of Windows Vista, Windows 7 and Windows 8/8.1.
+
+- Windows 7 support requires that either KB3033929 or KB4474419 is installed.
+- Windows Vista support requires that either KB4039648 or KB4474419 is installed.
+
+
- MSI installation only: Fix double-clicking .hc file container inserting %1 instead of volume name in path field.
- 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.
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:
-
Windows 11
-
Windows 10
-
-Windows Server 2016
-
+Windows 8 and 8.1
-
+Windows 7 (KB3033929 or KB4474419 must be installed)
-
+Windows Vista (KB4039648 or KB4474419 must be installed)
-
Windows XP
-
+Windows Server 2016
-
+Windows Server 2012
-
+Windows Server 2008 R2 (64-bit) (KB3033929 or KB4474419 must be installed)
-
+Windows Server 2008 (KB4039648 or KB4474419 must be installed)
-
+Windows Server 2003
-
Mac OS X 12 Monterey
-
Mac OS X 11 Big Sur
-
Mac OS X 10.15 Catalina
-
@@ -52,8 +59,6 @@ Linux x86 (32-bit and 64-bit versions, kernel 2.6 or compatible)
-
Raspberry Pi OS (32-bit and 64-bit)
-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.
-
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.
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:
-
Windows 11
-
Windows 10
-
-Windows Server 2016
-
-Windows XP
-
-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.
+Windows 8 and 8.1 -
+Windows 7 (KB3033929 or KB4474419 must be installed)
-
+Windows Vista SP2 (KB4039648 or KB4474419 must be installed)
-
+Windows XP
-
+Windows Server 2012
-
+Windows Server 2008 R2 (64-bit) (KB3033929 or KB4474419 must be installed)
-
+Windows Server 2008 (KB4039648 or KB4474419 must be installed)
-
+Windows Server 2003
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.
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