crwdns2934241:0crwdne2934241:0 mayer

crwdns2934249:0crwdne2934249:0:

First reinstall the latest version of Android File Transfer,

download here and follow the directions.

That failing, replace the cable and examine the ports for debris.

https://www.android.com/filetransfer/

crwdns2915684:0crwdne2915684:0:

open