Jtagserver is intended to be installed as a service so that it can run all the time (even when you're logged out) and provide access to the JTAG cables for remote and local users.
By default on windows services are not given access to network filesystems so the installer isn't able to install the jtagserver service if your ACDS is on a network drive.
There is a backup mode where jtagserver gets run under the same username as your programming/debug software. In this mode you will be able to use it from the local machine but remote JTAG won't work. This may be good enough for you.
If you want to install it as a service on the network then try `
x:\full\path\to\quartus\bin64\jtagserver --install <username> <password>`. You might have to --uninstall first.
Windows will use the username and password specified to access the network to get jtagserver.exe and its data files. In some (maybe all) cases windows stores the password plaintext in the registry so you might want to get a restricted account set up which just has read only access to the ACDS directories on your network.
