New-PSDrive gives password error from one -Root path, but is fine for another

Question

I have the following script:

New-PSDrive -Name X -PSProvider FileSystem -Root "$DeployLocation" -Credential $credentials
New-PSDrive -Name K -PSProvider FileSystem -Root "$autobuildSourceFiles" -Credential $credentials

When this runs, the first drive maps correctly, but the second one fails with the following error:

InvalidOperation: The specified network password is not correct

This is really a confusing error, because I pass in the exact same $credentials object for both calls. If one of them works, then I do not see how the password can be incorrect.

In case it is relevant, the variables look like this:

$DeployLocation = "\\dev-server\DevFiles\Technical\MyProjectNameHere"
$autobuildSourceFiles = "\\mainshare\build`$\Technical\MyProjectNameHere\1.0.0.94"

The user in the $credentials variable has read and write permissions to $DeployLocation and read-only permissiosn to $autobuildSourceFiles. But I don't see how that would cause a password error.

Things I have tried:

• Swapping the order of the calls (to ensure that there is not an issue with making more than one PSDrive). When I swap the order, the same one (drive "K") fails.
• Changing the drive letter. (I tried "Y" as well)
• Using the exact same text for the command that does work, but substituting the path that does not. (It still failed).

Note: I am using Powershell Version 5.1.14393.5127 on Windows.

What could be causing this error, and how can I work around it?