diff --git a/.github/workflows/windows.yml b/.github/workflows/windows.yml
index d2e97851fc..8dca6ce891 100644
--- a/.github/workflows/windows.yml
+++ b/.github/workflows/windows.yml
@@ -198,25 +198,26 @@ jobs:
       matrix:
         include:
           # MSYS
-          - { build: 'autotools', sys: 'msys'      , env: 'x86_64'       , tflags: ''       , config: '--enable-debug --with-openssl --disable-threaded-resolver --disable-proxy', install: 'openssl-devel libssh2-devel', name: '!proxy' }
-          - { build: 'autotools', sys: 'msys'      , env: 'x86_64'       , tflags: 'skiprun', config: '--enable-debug --with-openssl --disable-threaded-resolver', install: 'openssl-devel libssh2-devel', name: 'default' }
-          - { build: 'cmake'    , sys: 'msys'      , env: 'x86_64'       , tflags: ''       , config: '-DENABLE_DEBUG=ON -DENABLE_THREADED_RESOLVER=OFF', install: 'openssl-devel libssh2-devel', name: 'default' }
-          - { build: 'autotools', sys: 'msys'      , env: 'x86_64'       , tflags: ''       , config: '--with-openssl', install: 'openssl-devel libssh2-devel', name: 'default R' }
+          - { build: 'autotools', sys: 'msys'      , env: 'x86_64'       , tflags: ''                    , config: '--enable-debug --with-openssl --disable-threaded-resolver --disable-proxy', install: 'openssl-devel libssh2-devel', name: '!proxy' }
+          - { build: 'autotools', sys: 'msys'      , env: 'x86_64'       , tflags: 'skiprun'             , config: '--enable-debug --with-openssl --disable-threaded-resolver', install: 'openssl-devel libssh2-devel', name: 'default' }
+          - { build: 'cmake'    , sys: 'msys'      , env: 'x86_64'       , tflags: ''                    , config: '-DENABLE_DEBUG=ON -DENABLE_THREADED_RESOLVER=OFF', install: 'openssl-devel libssh2-devel', name: 'default' }
+          - { build: 'autotools', sys: 'msys'      , env: 'x86_64'       , tflags: ''                    , config: '--with-openssl', install: 'openssl-devel libssh2-devel', name: 'default R' }
           # MinGW
-          - { build: 'autotools', sys: 'mingw64'   , env: 'x86_64'       , tflags: 'skiprun', config: '--enable-debug --with-openssl --disable-threaded-resolver --disable-curldebug --enable-static=no --without-zlib CPPFLAGS=-D_WIN32_WINNT=0x0501', install: 'mingw-w64-x86_64-openssl mingw-w64-x86_64-libssh2', name: 'default XP' }
-          - { build: 'autotools', sys: 'mingw64'   , env: 'x86_64'       , tflags: ''       , config: '--enable-debug --with-openssl --enable-windows-unicode --enable-ares --with-openssl-quic --enable-shared=no', install: 'mingw-w64-x86_64-c-ares mingw-w64-x86_64-openssl mingw-w64-x86_64-nghttp3 mingw-w64-x86_64-libssh2', name: 'c-ares U' }
-          - { build: 'cmake'    , sys: 'mingw64'   , env: 'x86_64'       , tflags: ''       , config: '-DENABLE_DEBUG=ON  -DBUILD_SHARED_LIBS=OFF -DCURL_USE_SCHANNEL=ON -DENABLE_UNICODE=ON -DENABLE_ARES=ON', install: 'mingw-w64-x86_64-c-ares mingw-w64-x86_64-libssh2', type: 'Debug', name: 'schannel c-ares U' }
+          - { build: 'autotools', sys: 'mingw64'   , env: 'x86_64'       , tflags: 'skiprun'             , config: '--enable-debug --with-openssl --disable-threaded-resolver --disable-curldebug --enable-static=no --without-zlib CPPFLAGS=-D_WIN32_WINNT=0x0501', install: 'mingw-w64-x86_64-openssl mingw-w64-x86_64-libssh2', name: 'default XP' }
+          - { build: 'autotools', sys: 'mingw64'   , env: 'x86_64'       , tflags: ''                    , config: '--enable-debug --with-openssl --enable-windows-unicode --enable-ares --with-openssl-quic --enable-shared=no', install: 'mingw-w64-x86_64-c-ares mingw-w64-x86_64-openssl mingw-w64-x86_64-nghttp3 mingw-w64-x86_64-libssh2', name: 'c-ares U' }
+          - { build: 'cmake'    , sys: 'mingw64'   , env: 'x86_64'       , tflags: ''                    , config: '-DENABLE_DEBUG=ON  -DBUILD_SHARED_LIBS=OFF -DCURL_USE_SCHANNEL=ON -DENABLE_UNICODE=ON -DENABLE_ARES=ON', install: 'mingw-w64-x86_64-c-ares mingw-w64-x86_64-libssh2', type: 'Debug', name: 'schannel c-ares U' }
+          - { build: 'cmake'    , sys: 'mingw64'   , env: 'x86_64'       , tflags: '-t --shallow=13 !FTP', config: '-DENABLE_DEBUG=ON  -DBUILD_SHARED_LIBS=OFF -DCURL_USE_SCHANNEL=ON -DENABLE_UNICODE=ON -DENABLE_ARES=ON', install: 'mingw-w64-x86_64-c-ares mingw-w64-x86_64-libssh2', type: 'Debug', name: 'schannel U torture' }
           # WARNING: libssh uses hard-coded world-writable paths (/etc/..., ~/.ssh/) to
           #          read its configuration from, making it vulnerable to attacks on
           #          Windows. Do not use this component till there is a fix for these.
           # https://github.com/curl/curl-for-win/blob/3951808deb04df9489ee17430f236ed54436f81a/libssh.sh#L6-L8
-          - { build: 'cmake'    , sys: 'clang64'   , env: 'clang-x86_64' , tflags: ''       , config: '-DENABLE_DEBUG=ON  -DBUILD_SHARED_LIBS=OFF -DCURL_USE_GNUTLS=ON   -DENABLE_UNICODE=OFF -DUSE_NGTCP2=ON -DCURL_USE_LIBSSH2=OFF -DCURL_USE_LIBSSH=ON', install: 'mingw-w64-clang-x86_64-gnutls mingw-w64-clang-x86_64-nghttp3 mingw-w64-clang-x86_64-ngtcp2 mingw-w64-clang-x86_64-libssh', type: 'Debug', name: 'gnutls libssh' }
-          - { build: 'cmake'    , sys: 'clangarm64', env: 'clang-aarch64', tflags: 'skiprun', config: '-DENABLE_DEBUG=OFF -DBUILD_SHARED_LIBS=ON  -DCURL_USE_SCHANNEL=ON -DENABLE_UNICODE=ON -DENABLE_CURLDEBUG=ON', install: 'mingw-w64-clang-aarch64-libssh2', type: 'Release', name: 'schannel R TrackMemory', image: 'windows-11-arm' }
-          - { build: 'cmake'    , sys: 'clang64'   , env: 'clang-x86_64' , tflags: 'skiprun', config: '-DENABLE_DEBUG=ON  -DBUILD_SHARED_LIBS=OFF -DCURL_USE_OPENSSL=ON  -DENABLE_UNICODE=OFF -DUSE_NGTCP2=ON', install: 'mingw-w64-clang-x86_64-openssl mingw-w64-clang-x86_64-nghttp3 mingw-w64-clang-x86_64-ngtcp2 mingw-w64-clang-x86_64-libssh2', type: 'Release', name: 'openssl', chkprefill: '_chkprefill' }
-          - { build: 'cmake'    , sys: 'ucrt64'    , env: 'ucrt-x86_64'  , tflags: 'skiprun', config: '-DENABLE_DEBUG=OFF -DBUILD_SHARED_LIBS=ON  -DCURL_USE_OPENSSL=ON', install: 'mingw-w64-ucrt-x86_64-openssl mingw-w64-ucrt-x86_64-libssh2', type: 'Release', test: 'uwp', name: 'schannel' }
-          # { build: 'autotools', sys: 'ucrt64'    , env: 'ucrt-x86_64'  , tflags: 'skiprun', config: '--without-debug --with-schannel --enable-shared', install: 'mingw-w64-ucrt-x86_64-libssh2', type: 'Release', test: 'uwp', name: 'schannel' }
-          - { build: 'cmake'    , sys: 'mingw64'   , env: 'x86_64'       , tflags: 'skiprun', config: '-DENABLE_DEBUG=ON  -DBUILD_SHARED_LIBS=ON  -DCURL_USE_SCHANNEL=ON -DENABLE_UNICODE=ON -DCMAKE_VERBOSE_MAKEFILE=ON', install: 'mingw-w64-x86_64-libssh2', type: 'Debug', cflags: '-DCURL_SCHANNEL_DEV_DEBUG', name: 'schannel dev debug', image: 'windows-2025' }
-          - { build: 'cmake'    , sys: 'mingw32'   , env: 'i686'         , tflags: 'skiprun', config: '-DENABLE_DEBUG=OFF -DBUILD_SHARED_LIBS=ON  -DCURL_USE_SCHANNEL=ON -DENABLE_UNICODE=ON', install: 'mingw-w64-i686-libssh2', type: 'Release', name: 'schannel R' }
+          - { build: 'cmake'    , sys: 'clang64'   , env: 'clang-x86_64' , tflags: ''                    , config: '-DENABLE_DEBUG=ON  -DBUILD_SHARED_LIBS=OFF -DCURL_USE_GNUTLS=ON   -DENABLE_UNICODE=OFF -DUSE_NGTCP2=ON -DCURL_USE_LIBSSH2=OFF -DCURL_USE_LIBSSH=ON', install: 'mingw-w64-clang-x86_64-gnutls mingw-w64-clang-x86_64-nghttp3 mingw-w64-clang-x86_64-ngtcp2 mingw-w64-clang-x86_64-libssh', type: 'Debug', name: 'gnutls libssh' }
+          - { build: 'cmake'    , sys: 'clangarm64', env: 'clang-aarch64', tflags: 'skiprun'             , config: '-DENABLE_DEBUG=OFF -DBUILD_SHARED_LIBS=ON  -DCURL_USE_SCHANNEL=ON -DENABLE_UNICODE=ON -DENABLE_CURLDEBUG=ON', install: 'mingw-w64-clang-aarch64-libssh2', type: 'Release', name: 'schannel R TrackMemory', image: 'windows-11-arm' }
+          - { build: 'cmake'    , sys: 'clang64'   , env: 'clang-x86_64' , tflags: 'skiprun'             , config: '-DENABLE_DEBUG=ON  -DBUILD_SHARED_LIBS=OFF -DCURL_USE_OPENSSL=ON  -DENABLE_UNICODE=OFF -DUSE_NGTCP2=ON', install: 'mingw-w64-clang-x86_64-openssl mingw-w64-clang-x86_64-nghttp3 mingw-w64-clang-x86_64-ngtcp2 mingw-w64-clang-x86_64-libssh2', type: 'Release', name: 'openssl', chkprefill: '_chkprefill' }
+          - { build: 'cmake'    , sys: 'ucrt64'    , env: 'ucrt-x86_64'  , tflags: 'skiprun'             , config: '-DENABLE_DEBUG=OFF -DBUILD_SHARED_LIBS=ON  -DCURL_USE_OPENSSL=ON', install: 'mingw-w64-ucrt-x86_64-openssl mingw-w64-ucrt-x86_64-libssh2', type: 'Release', test: 'uwp', name: 'schannel' }
+          # { build: 'autotools', sys: 'ucrt64'    , env: 'ucrt-x86_64'  , tflags: 'skiprun'             , config: '--without-debug --with-schannel --enable-shared', install: 'mingw-w64-ucrt-x86_64-libssh2', type: 'Release', test: 'uwp', name: 'schannel' }
+          - { build: 'cmake'    , sys: 'mingw64'   , env: 'x86_64'       , tflags: 'skiprun'             , config: '-DENABLE_DEBUG=ON  -DBUILD_SHARED_LIBS=ON  -DCURL_USE_SCHANNEL=ON -DENABLE_UNICODE=ON -DCMAKE_VERBOSE_MAKEFILE=ON', install: 'mingw-w64-x86_64-libssh2', type: 'Debug', cflags: '-DCURL_SCHANNEL_DEV_DEBUG', name: 'schannel dev debug', image: 'windows-2025' }
+          - { build: 'cmake'    , sys: 'mingw32'   , env: 'i686'         , tflags: 'skiprun'             , config: '-DENABLE_DEBUG=OFF -DBUILD_SHARED_LIBS=ON  -DCURL_USE_SCHANNEL=ON -DENABLE_UNICODE=ON', install: 'mingw-w64-i686-libssh2', type: 'Release', name: 'schannel R' }
       fail-fast: false
     steps:
       - uses: msys2/setup-msys2@fb197b72ce45fb24f17bf3f807a388985654d1f2 # v2.29.0
@@ -367,7 +368,7 @@ jobs:
 
       - name: 'run tests'
         if: ${{ matrix.tflags != 'skipall' && matrix.tflags != 'skiprun' }}
-        timeout-minutes: 10
+        timeout-minutes: ${{ contains(matrix.tflags, '-t') && 15 || 10 }}
         env:
           MATRIX_INSTALL: '${{ matrix.install }}'
           TFLAGS: '${{ matrix.tflags }}'
@@ -378,6 +379,9 @@ jobs:
             if [[ "${MATRIX_INSTALL}" = *'libssh2-wincng'* ]]; then
               TFLAGS+=' ~SCP ~SFTP'  # Flaky: `-8, Unable to exchange encryption keys`. https://github.com/libssh2/libssh2/issues/804
             fi
+            if [[ "${TFLAGS}" = *'-t'* ]]; then
+              TFLAGS+=' !2300'  # Leaks memory and file handle via tool_doswin.c / win32_stdin_read_thread()
+            fi
           fi
           if [ -x "$(cygpath "${SYSTEMROOT}/System32/curl.exe")" ]; then
             TFLAGS+=" -ac $(cygpath "${SYSTEMROOT}/System32/curl.exe")"