$ vagrant up
Bringing machine 'default' up with 'virtualbox' provider...
==> default: Box 'generic/ubuntu2004' could not be found. Attempting to find and install...
default: Box Provider: virtualbox
default: Box Version: >= 0
==> default: Loading metadata for box 'generic/ubuntu2004'
default: URL: https://vagrantcloud.com/generic/ubuntu2004
==> default: Adding box 'generic/ubuntu2004' (v3.3.4) for provider: virtualbox
default: Downloading: https://vagrantcloud.com/generic/boxes/ubuntu2004/versions/3.3.4/providers/virtualbox.box
default:
An error occurred while downloading the remote file. The error
message, if any, is reproduced below. Please fix this error and try
again.
schannel: next InitializeSecurityContext failed: Unknown error (0x80092012) - The revocation function was unable to check revocation for the certificate.
Just did a quick test and it was working fine in my environment.
vagrant up
Bringing machine 'default' up with 'virtualbox' provider...
==> default: Box 'generic/ubuntu2004' could not be found. Attempting to find and install...
default: Box Provider: virtualbox
default: Box Version: >= 0
==> default: Loading metadata for box 'generic/ubuntu2004'
default: URL: https://vagrantcloud.com/generic/ubuntu2004
==> default: Adding box 'generic/ubuntu2004' (v3.3.4) for provider: virtualbox
default: Downloading: https://vagrantcloud.com/generic/boxes/ubuntu2004/versions/3.3.4/providers/virtualbox.box
default: Calculating and comparing box checksum...
==> default: Successfully added box 'generic/ubuntu2004' (v3.3.4) for 'virtualbox'!
==> default: Importing base box 'generic/ubuntu2004'...
==> default: Matching MAC address for NAT networking...
==> default: Checking if box 'generic/ubuntu2004' version '3.3.4' is up to date...
==> default: Setting the name of the VM: vagrant_kong
==> default: Clearing any previously set network interfaces...
==> default: Preparing network interfaces based on configuration...
default: Adapter 1: nat
==> default: Forwarding ports...
It seems to me that you got the error message when vagrant was trying to pull image from vagrantcloud.com