Conda 4.03 update MD5 sums mismatch

Question

Windows 10 Pro, x64, Anaconda 2.5.0, current conda 4.0.3

> conda update conda

failed for 4.0.3->4.0.4 update and now for 4.0.3->4.0.5 update with very similar message (modulo hash values):

Error: MD5 sums mismatch for download: https://repo.continuum.io/pkgs/free/win-64/conda-4.0.5-py35_0.tar.bz2 (d41d8cd98f00b204e9800998ecf8427e != fcf55c185657b51475b17109104c03d1)

What went wrong?

When I d/l package manually (4.0.4 or 4.0.5), checksum matches with what is published by Continuum

Answer 1

It is a known issue for conda 4.0.3, see here for details. You have to downgrade first doing

> conda install conda=4.0.2

then

> conda update conda

will work again and push you to 4.0.5 without problems