X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=blobdiff_plain;f=doc%2Ffaq.but;h=c794917165b474da149dc9ff45c94e137f1bb490;hb=30e43ba2a33c4f107da25d3a2d6b081ffd978d43;hp=ded2d1969e8d5bb10f4c4ba4414f23e7530c995a;hpb=138ec348448ffbe17527390f69d08d4de161b384;p=PuTTY.git

diff --git a/doc/faq.but b/doc/faq.but
index ded2d196..c7949171 100644
--- a/doc/faq.but
+++ b/doc/faq.but
@@ -1043,6 +1043,23 @@ is triggered by PuTTY 0.58. This was fixed in 0.59. The
 \W{http://www.chiark.greenend.org.uk/~sgtatham/putty/wishlist/xp-wont-run}{\q{xp-wont-run}}
 entry in PuTTY's wishlist has more details.
 
+\S{faq-system32}{Question} When I put PuTTY in
+\cw{C:\\WINDOWS\\\i{SYSTEM32}} on my \i{64-bit Windows} system,
+\i{\q{Duplicate Session}} doesn't work.
+
+The short answer is not to put the PuTTY executables in that location.
+
+On 64-bit systems, \cw{C:\\WINDOWS\\SYSTEM32} is intended to contain
+only 64-bit binaries; Windows' 32-bit binaries live in
+\cw{C:\\WINDOWS\\SYSWOW64}. When a 32-bit program such as PuTTY runs
+on a 64-bit system, it cannot by default see the \q{real}
+\cw{C:\\WINDOWS\\SYSTEM32} at all, because the
+\W{http://msdn.microsoft.com/en-us/library/aa384187(v=vs.85).aspx}{File
+System Redirector} arranges that the running program sees the
+appropriate kind of binaries in \cw{SYSTEM32}. Thus, operations in
+the PuTTY suite that involve it accessing its own executables, such as
+\i{\q{New Session}} and \q{Duplicate Session}, will not work.
+
 \H{faq-secure} Security questions
 
 \S{faq-publicpc}{Question} Is it safe for me to download PuTTY and