diff --git a/.circleci/config.yml b/.circleci/config.yml
index a315f3342da..16ae9ac39b5 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -53,8 +53,6 @@ jobs:
               libsqlite3-dev \
               libwebp-dev \
               libonig-dev \
-              libkrb5-dev \
-              libgssapi-krb5-2 \
               libcurl4-openssl-dev \
               libxml2-dev \
               libxslt1-dev \
@@ -128,7 +126,6 @@ jobs:
               --enable-calendar \
               --enable-ftp \
               --with-enchant=/usr \
-              --with-kerberos \
               --enable-sysvmsg \
               --with-ffi \
               --enable-zend-test \
diff --git a/.cirrus.yml b/.cirrus.yml
index d1ad298c888..7db6ce1a911 100644
--- a/.cirrus.yml
+++ b/.cirrus.yml
@@ -11,10 +11,10 @@ freebsd_task:
     #- sed -i -e 's/quarterly/latest/g' /etc/pkg/FreeBSD.conf
     #- pkg upgrade -y
     - kldload accf_http
-    - pkg install -y autoconf bison gmake re2c icu libiconv png freetype2 enchant2 bzip2 krb5 t1lib gmp tidyp libsodium libzip libxml2 libxslt openssl oniguruma pkgconf webp libavif
+    - pkg install -y autoconf bison gmake re2c icu libiconv png freetype2 enchant2 bzip2 t1lib gmp tidyp libsodium libzip libxml2 libxslt openssl oniguruma pkgconf webp libavif
   script:
     - ./buildconf -f
-    - ./configure --prefix=/usr/local --enable-debug --enable-option-checking=fatal --enable-fpm --with-pdo-sqlite --without-pear --with-bz2 --with-avif --with-jpeg --with-webp --with-freetype --enable-gd --enable-exif --with-zip --with-zlib --enable-soap --enable-xmlreader --with-xsl --with-libxml --enable-shmop --enable-pcntl --enable-mbstring --with-curl --enable-sockets --with-openssl --with-iconv=/usr/local --enable-bcmath --enable-calendar --enable-ftp --with-kerberos --with-ffi --enable-zend-test --enable-dl-test=shared --enable-intl --with-mhash --with-sodium --enable-werror --with-config-file-path=/etc --with-config-file-scan-dir=/etc/php.d
+    - ./configure --prefix=/usr/local --enable-debug --enable-option-checking=fatal --enable-fpm --with-pdo-sqlite --without-pear --with-bz2 --with-avif --with-jpeg --with-webp --with-freetype --enable-gd --enable-exif --with-zip --with-zlib --enable-soap --enable-xmlreader --with-xsl --with-libxml --enable-shmop --enable-pcntl --enable-mbstring --with-curl --enable-sockets --with-openssl --with-iconv=/usr/local --enable-bcmath --enable-calendar --enable-ftp --with-ffi --enable-zend-test --enable-dl-test=shared --enable-intl --with-mhash --with-sodium --enable-werror --with-config-file-path=/etc --with-config-file-scan-dir=/etc/php.d
     - gmake -j2
     - mkdir /etc/php.d
     - gmake install
diff --git a/.github/actions/apt-x32/action.yml b/.github/actions/apt-x32/action.yml
index dbb50d425ef..0638881d1e4 100644
--- a/.github/actions/apt-x32/action.yml
+++ b/.github/actions/apt-x32/action.yml
@@ -23,10 +23,8 @@ runs:
           libffi-dev:i386 \
           libfreetype6-dev:i386 \
           libgmp-dev:i386 \
-          libgssapi-krb5-2:i386 \
           libicu-dev:i386 \
           libjpeg-dev:i386 \
-          libkrb5-dev:i386 \
           libonig-dev:i386 \
           libpng-dev:i386 \
           libpq-dev:i386 \
diff --git a/.github/actions/apt-x64/action.yml b/.github/actions/apt-x64/action.yml
index 05e17918f01..469e1a5df82 100644
--- a/.github/actions/apt-x64/action.yml
+++ b/.github/actions/apt-x64/action.yml
@@ -40,8 +40,6 @@ runs:
           libsqlite3-mod-spatialite \
           libwebp-dev \
           libonig-dev \
-          libkrb5-dev \
-          libgssapi-krb5-2 \
           libcurl4-openssl-dev \
           libxml2-dev \
           libxslt1-dev \
diff --git a/.github/actions/brew/action.yml b/.github/actions/brew/action.yml
index a6869db137d..4975acfd30e 100644
--- a/.github/actions/brew/action.yml
+++ b/.github/actions/brew/action.yml
@@ -19,7 +19,6 @@ runs:
         brew install \
           openssl@1.1 \
           curl \
-          krb5 \
           bzip2 \
           enchant \
           libffi \
diff --git a/.github/actions/configure-macos/action.yml b/.github/actions/configure-macos/action.yml
index cda8e7fbac8..ab92dfb2d78 100644
--- a/.github/actions/configure-macos/action.yml
+++ b/.github/actions/configure-macos/action.yml
@@ -13,7 +13,6 @@ runs:
         export PATH="$BREW_OPT/bison/bin:$PATH"
         export PKG_CONFIG_PATH="$PKG_CONFIG_PATH:$BREW_OPT/openssl@1.1/lib/pkgconfig"
         export PKG_CONFIG_PATH="$PKG_CONFIG_PATH:$BREW_OPT/curl/lib/pkgconfig"
-        export PKG_CONFIG_PATH="$PKG_CONFIG_PATH:$BREW_OPT/krb5/lib/pkgconfig"
         export PKG_CONFIG_PATH="$PKG_CONFIG_PATH:$BREW_OPT/libffi/lib/pkgconfig"
         export PKG_CONFIG_PATH="$PKG_CONFIG_PATH:$BREW_OPT/libxml2/lib/pkgconfig"
         export PKG_CONFIG_PATH="$PKG_CONFIG_PATH:$BREW_OPT/libxslt/lib/pkgconfig"
@@ -58,7 +57,6 @@ runs:
           --enable-bcmath \
           --enable-calendar \
           --enable-ftp \
-          --with-kerberos \
           --enable-sysvmsg \
           --with-ffi \
           --enable-zend-test \
diff --git a/.github/actions/configure-x32/action.yml b/.github/actions/configure-x32/action.yml
index 0d4cd30e669..c07c49bb2c4 100644
--- a/.github/actions/configure-x32/action.yml
+++ b/.github/actions/configure-x32/action.yml
@@ -54,7 +54,6 @@ runs:
             --enable-bcmath \
             --enable-calendar \
             --enable-ftp \
-            --with-kerberos \
             --enable-sysvmsg \
             --with-ffi \
             --enable-zend-test \
diff --git a/.github/actions/configure-x64/action.yml b/.github/actions/configure-x64/action.yml
index 95cf656fa70..38dce5ef8fa 100644
--- a/.github/actions/configure-x64/action.yml
+++ b/.github/actions/configure-x64/action.yml
@@ -53,7 +53,6 @@ runs:
           --enable-calendar \
           --enable-ftp \
           ${{ inputs.skipSlow == 'false' && '--with-enchant=/usr' || '' }} \
-          --with-kerberos \
           --enable-sysvmsg \
           --with-ffi \
           --enable-zend-test \
diff --git a/.travis.yml b/.travis.yml
index a94afb4e9ef..fd18307662a 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -19,7 +19,6 @@ addons:
       - libgmp-dev
       - libicu-dev
       - libjpeg-dev
-      - libkrb5-dev
       - libonig-dev
       - libpng-dev
       - libpq-dev
diff --git a/UPGRADING.INTERNALS b/UPGRADING.INTERNALS
index 47e35283f3a..f6585f4b60f 100644
--- a/UPGRADING.INTERNALS
+++ b/UPGRADING.INTERNALS
@@ -97,6 +97,7 @@ PHP 8.4 INTERNALS UPGRADE NOTES
    - The configure option --with-imap-ssl has been removed.
    - The configure option --with-oci8 has been removed.
    - The configure option --with-zlib-dir has been removed.
+   - The configure option --with-kerberos has been removed.
    - COOKIE_IO_FUNCTIONS_T symbol has been removed (use cookie_io_functions_t).
    - HAVE_SOCKADDR_UN_SUN_LEN symbol renamed to HAVE_STRUCT_SOCKADDR_UN_SUN_LEN.
    - HAVE_UTSNAME_DOMAINNAME symbol renamed to HAVE_STRUCT_UTSNAME_DOMAINNAME.
diff --git a/ext/openssl/config0.m4 b/ext/openssl/config0.m4
index f449a19d55c..1861a09ca54 100644
--- a/ext/openssl/config0.m4
+++ b/ext/openssl/config0.m4
@@ -3,13 +3,6 @@ PHP_ARG_WITH([openssl],
   [AS_HELP_STRING([--with-openssl],
     [Include OpenSSL support (requires OpenSSL >= 1.1.1)])])
 
-PHP_ARG_WITH([kerberos],
-  [for Kerberos support],
-  [AS_HELP_STRING([--with-kerberos],
-    [OPENSSL: Include Kerberos support])],
-  [no],
-  [no])
-
 PHP_ARG_WITH([system-ciphers],
   [whether to use system default cipher list instead of hardcoded value],
   [AS_HELP_STRING([--with-system-ciphers],
@@ -20,14 +13,6 @@ PHP_ARG_WITH([system-ciphers],
 if test "$PHP_OPENSSL" != "no"; then
   PHP_NEW_EXTENSION(openssl, openssl.c xp_ssl.c, $ext_shared)
   PHP_SUBST(OPENSSL_SHARED_LIBADD)
-
-  if test "$PHP_KERBEROS" != "no"; then
-    PKG_CHECK_MODULES([KERBEROS], [krb5-gssapi krb5])
-
-    PHP_EVAL_INCLINE($KERBEROS_CFLAGS)
-    PHP_EVAL_LIBLINE($KERBEROS_LIBS, OPENSSL_SHARED_LIBADD)
-  fi
-
   PHP_SETUP_OPENSSL(OPENSSL_SHARED_LIBADD,
   [
     AC_DEFINE(HAVE_OPENSSL_EXT,1,[ ])
diff --git a/travis/compile.sh b/travis/compile.sh
index be1483f1521..bab44d30ad1 100755
--- a/travis/compile.sh
+++ b/travis/compile.sh
@@ -61,7 +61,6 @@ $S390X_CONFIG \
 --enable-calendar \
 --enable-ftp \
 --with-enchant=/usr \
---with-kerberos \
 --enable-sysvmsg \
 --with-ffi \
 --with-sodium \