Cannot see a TFS drops location from inside a network isolated environment for Release Management

I have posted before about using Release Management with Lab Management network isolation. They key is that you must issue a NET USE command at the start of the pipeline to allow the VMs in the isolated environment the ability to see the TFS drops location.

I hit a problem today that a build failed even though I had issued the NET USE.

I got the error

Package location ‘\storedropsSabs.Main.CISabs.Main.CI_2.5.178.19130\’ does not exist or Deployer user does not have access.

Turns out the problem was I had issued the NET USE as \\store.blackmarble.co.ukdrops not \\storedrops it is vital the names match up. Once I changed this my NET USE all was OK