pSEXEC Error deriving session key: Object already exists. This topic contains 1 reply, has 2 voices, and was last updated by Don Jones 1 year, 6 months ago. Author Posts July 24, 2015 at 9:09 am #27863 Stephen BandyParticipant My PS exec used to work for sending commands to remote PC's Now I get the error Error deriving session key: Object already exists. My team mate uses the same build image and tools that I do and his works with out issues . Any ideas hows to clear this error example PS C:\> psexec \\PCLAPTOPW7 net use i: \\SERVER\SHARE PsExec v2.11 – Execute processes remotely Copyright (C) 2001-2014 Mark Russinovich Sysinternals – http://www.sysinternals.com Error deriving session key: Object already exists. PS C:\> July 24, 2015 at 10:13 am #27864 Don JonesKeymaster So, PSEXEC isn't actually PowerShell; it's. SysInternals tool. This might not be the best place to get help for it, although we can see if anyone jumps in with an answer for you. Author Posts You must be logged in to reply to this topic.