Macbook Pro won't mount External Hardrives

I have a 2014 macbook pro that I recently updated to High Sierra. Ever since the update I have been unable to mount my Seagate Backup Plus Drive. I've tried restarting multiple times, connecting to other computers (which does work, they all mount it just fine) and checking Disk Utility. The drive shows up greyed-out in Disk Utility, pressing mount doesn't do anything. I'm at a loss. I believe it's a problem with my computer and not the drive, since the drive mounts to all other computers I've tried. Any help would be really appreciated