Ubuntu – Cannot install any package in Ubuntu using dpkg, getting “package architecture does not match system”

Ubuntu

Whenever I want to upgrade or install any package on Ubuntu 16.04 this error appears!

dpkg: error processing /var/cache/apt/archives/gcc-6-base_6.0.1-ubuntu1_amd64.deb (–unpack):

package architecture (amd64) does not match system (i386)

Errors were encountered while processing:

/var/cache/apt/archives/gcc-6-base_6.0.1-0ubuntu1_amd64.deb

E: Sub-process /usr/bin/dpkg returned an error code (1)

The uname command outputs as follows:

uname -i
x86_64

uname -a
Linux hossein 4.4.0-138-generic #164-Ubuntu SMP Tue Oct 2 17:16:02 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux

Best Answer

Try to run this commands to enable support for the 64-bit userspace. 

sudo apt-get update
sudo dpkg --add-architecture amd64
sudo apt-get update

and try to install the packages again. Also,you could try to run 

dpkg --print-architecture

to move the investigation further.

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