How do you delete a Visual Studio Marketplace publisher?

There is currently no way in the UI to delete a publisher ... at least, as of 2019-01-15

You can delete using the tfx cli ...

tfx extension publisher delete --publisher mypublisherid

Steve must first remove the publisher from the list. To check if it is in the list, run in console:

vsce ls-publishers

Then if you see the publisher in the list execute the following:

vsce logout <name-publisher>

And finally to eliminate the publisher:

vsce delete-publisher <name-publisher>

PD You will probably need the token you used to create it.

https://code.visualstudio.com/api/working-with-extensions/publishing-extension

It's unclear if you're trying to delete the publisher or whether you're trying to delete the offering for a publisher. It sounds like the former--the answer probably is the same, either way...

To remove an offering: The publisher agreement (https://cdn.vsassets.io/v/M143_20181113.44/_content/Visual-Studio-Marketplace-Publisher-Agreement.pdf) states on page 7 (Section 7(a)) that you may remove an offering with 30 days' notice (be sure to read the Removal policy in Exhibit A).

To do that, contact support at this email: vsmarketplace@microsoft.com

To remove a publisher, I the same email above would very likely be able to help. If you find that there's a better way, please update us here.