Resurrecting this thread b/c I found an issue recently that may have contributed to it.
OK, so some people have always had a major problem with ghost devices showing up in adb, so that they are not able to use automated tools that make use of the Android SDK platform tools. One recurring example is the
emulator-5554 dummy device showing when you perform
It's been noted in other places that you should check out any particular software that might be listening in and creating these ghost entries. I'm happy to say that I've found at least one potential problematic software.
It's CorsairLink software...
...Any other software that does any sort of similar 'listening' has the potential to cause problems when using adb, so e on the lookout.
HTH