Jenkins build failing to copy licence cache

Hi there

A team I support are experiencing intermittent issues with their Jenkins builds.

They are receiving this issue during compile..

*** Using Compiler 'V5.06 update 6 (build 750)', folder: 'C:\Keil_v5\ARM\ARMCC\Bin'
Rebuild target 'DA14586'
compiling system_DA14585_586.c...
assembling startup_DA14585_586.s...
startup_DA14585_586.s: Warning: A9529W: Failed to move or copy license cache file from […] to […]

I can't see any obvious reason for this happening. Any suggestions as to why? The agent is running on Windows Server 2012. If there's any more information that may assist, please let me know and Ill track it down

thanks