apt - gpg: Fatal: libgcrypt is too old (need 1.7.0, have 1.6.5) - Ask Ubuntu

after upgrade yakkety cannot safe update or upgrade system. output of apt update (and aptitude , synaptic etc) same:

gpg error: http://01.archive.ubuntu.com/ubuntu yakkety-updates inrelease: unknown error executing apt-key

the execution of apt-key update give me:

gpg: fatal: libgcrypt old (need 1.7.0, have 1.6.5)

quite strange...i tried install manually libgcrypt20 , still output same...

so checked dpkg -p libgcrypt20 gives me:

dpkg-query: package 'libgcrypt20' not available

but according synaptic version 1.7.2-2ubuntu1 installed...

i tried ldconfig.

i cannot update in not safe mode because in non democratic country, , afraid system.

thks. c.

i experienced error similar this. in case, had version of libgcrypt installed in /usr/local/lib

user@computer:~$ gpg --version gpg: fatal: libgcrypt old (need 1.7.0, have 1.6.4) user@computer:~$ sudo ldd /usr/bin/gpg     linux-vdso.so.1 =>  (0x00007fff5b3b8000)     libz.so.1 => /lib/x86_64-linux-gnu/libz.so.1 (0x00007f4f1f95d000)     libbz2.so.1.0 => /lib/x86_64-linux-gnu/libbz2.so.1.0 (0x00007f4f1f74d000)     libsqlite3.so.0 => /usr/lib/x86_64-linux-gnu/libsqlite3.so.0 (0x00007f4f1f44b000)     libgcrypt.so.20 => /usr/local/lib/libgcrypt.so.20 (0x00007f4f1f169000)     libreadline.so.7 => /lib/x86_64-linux-gnu/libreadline.so.7 (0x00007f4f1ef1f000)     libassuan.so.0 => /usr/local/lib/libassuan.so.0 (0x00007f4f1ed0a000)     libgpg-error.so.0 => /usr/local/lib/libgpg-error.so.0 (0x00007f4f1eaf6000)     libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f4f1e72f000)     libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007f4f1e426000)     libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0 (0x00007f4f1e208000)     libdl.so.2 => /lib/x86_64-linux-gnu/libdl.so.2 (0x00007f4f1e004000)     libtinfo.so.5 => /lib/x86_64-linux-gnu/libtinfo.so.5 (0x00007f4f1ddd9000)     /lib64/ld-linux-x86-64.so.2 (0x0000564feff78000) user@computer:~$ ls /usr/local/lib libassuan.la        libgcrypt.so         libgpg-error.so.0       libksba.so.8.11.4 libassuan.so        libgcrypt.so.20      libgpg-error.so.0.17.0  libnpth.la libassuan.so.0      libgcrypt.so.20.0.4  libksba.la              libnpth.so libassuan.so.0.7.2  libgpg-error.la      libksba.so              libnpth.so.0 libgcrypt.la        libgpg-error.so      libksba.so.8            libnpth.so.0.0.5 

i solved problem uninstalling version of gnupg had manually installed

./configure make make uninstall