I'm trying to install docker with apt from the https://download.docker.com/linux/debian/ repo.

Unfortunately installation always fails with a hash mismatch warning. I have already tried everything suggested in this post https://askubuntu.com/questions/41605/trouble-downloading-packages-list-due-to-a-hash-sum-mismatch-error without any success.

The thing is when I compare the hash of the following error

Fetched 21.4 MB in 17s (1,290 kB/s)                                                                                          
E: Failed to fetch https://download.docker.com/linux/debian/dists/buster/pool/stable/amd64/containerd.io_1.2.13-2_amd64.deb  Hash Sum mismatch
   Hashes of expected file:
    - SHA512:e0432c524abf9d915d42eab87c0a6cf4bd589cf2f250652253f98099c7961196f59ea0eb3f5683b05eafd969254e614739dc5681da0573b09a2eab64ab4efcfd
    - SHA256:71209f4a958d94639cba81ba3469d0aa9eff3da484106580959f5cf1fd116666
    - SHA1:08fd3a4a4e82a1c0452c6bbd5803b19315c7e968 [weak]
    - MD5Sum:2ed3788e04a8a8787ea83b8b3a00152f [weak]
    - Filesize:21404482 [weak]
   Hashes of received file:
    - SHA512:24c80b4371056e0b7c34a7e9abde3ee62ecfb8ee5dbbb8db4a48104b16574749588ca00f71bc4d7c4fe148a9f706e86a9a2b4ac1f5f7955bfb316950f093de49
    - SHA256:81753f427efcc308215d8a604e020743ab86ff2c45d67d86f35291d14550e203
    - SHA1:316d0bbe37b28c9da64bfa263e2b31a3bbe7199e [weak]
    - MD5Sum:8dacbbff65f077d567ab1bff2cc2ad4b [weak]
    - Filesize:21404482 [weak]
   Last modification reported: Fri, 15 May 2020 03:23:56 +0000
E: Unable to fetch some archives, maybe run apt-get update or try with --fix-missing?

with the output of md5sum containerd.io_1.2.13-2_amd64.deb (file downloaded manually from https://download.docker.com/linux/debian/dists/buster/pool/stable/amd64/containerd.io_1.2.13-2_amd64.deb)

I get the md5 hash 2ed3788e04a8a8787ea83b8b3a00152f containerd.io_1.2.13-2_amd64.deb which is exactly what apt claims is the expected value.

So my only guess is that apt is either downloading something wrong or hashes the wrong way. This sound quite strange to me and I could not find any help searching for this.

Here is my sources.list

$ cat /etc/apt/sources.list

# deb cdrom:[Official Debian GNU/Linux Live 10.4.0 xfce 2020-05-09T10:59]/ buster main

# deb cdrom:[Official Debian GNU/Linux Live 10.4.0 xfce 2020-05-09T10:59]/ buster main

deb http://ftp.tu-clausthal.de/debian/ buster main
deb-src http://ftp.tu-clausthal.de/debian/ buster main

deb http://security.debian.org/debian-security buster/updates main
deb-src http://security.debian.org/debian-security buster/updates main

# buster-updates, previously known as 'volatile'
deb http://ftp.tu-clausthal.de/debian/ buster-updates main
deb-src http://ftp.tu-clausthal.de/debian/ buster-updates main

# This system was installed using small removable media
# (e.g. netinst, live or single CD). The matching "deb cdrom"
# entries were disabled at the end of the installation process.
# For information about how to configure apt package sources,
# see the sources.list(5) manual.
deb [arch=amd64] https://download.docker.com/linux/debian buster stable

Debian is running in a virtual machine. Host system is Windows 10.

Thanks for any advice!

  • If you download the file manually (it appears that the downloaded file has correct hash) and copy it to your rpm cache directory, then install it. The apt should take the file from its cache.
    – tukan
    Commented Jun 22, 2020 at 9:37
  • rpm ist not installed on my system. Where would I find the cache directory?
    – z3rone
    Commented Jun 22, 2020 at 13:20
  • found the apt cache directory under /var/cache/apt/archives/. Copying the deb file there and then installing works but this is a pretty dirty workaround and not a permanent fix...
    – z3rone
    Commented Jun 22, 2020 at 13:25
  • 1
    Ah, sorry about the rpm I meant the deb. Well that is not a dirty workaround, it is simply a workaround (you do manually what apt does anyways). You probably have some issue with ISP's proxy. Can you connect to some VPN and try it there? Perpahs you could try a different source?
    – tukan
    Commented Jun 22, 2020 at 13:50
  • 2
    Are you on Windows? Might be this bug
    – muru
    Commented Jun 24, 2020 at 9:00

1 Answer 1


Thanks @muru for referring to this post, it was indeed a problem with Windows' hyper-v and VirtualBox. Disabling the hyper-v acceleration solved the problem.

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