Hi all,   I attempted to migrate from SAS 9.4 M6 to SAS 9.4 M8.  The update dialogue hit a brick wall when attempting to update Base SAS 64-bit English.  The error log showed the complaint of "sashost.dll The process cannot access the file because it is being used by another process".  This was odd in that I rebooted the system just prior to initiating the upgrade, and I did no SAS work between the reboot and initiating the upgrade.  I tried it multiple times with the same bad result.  I also installed Windows systernals ProcMon to check if there was any obvious SAS modules in memory that might be causing the block -- I did not see any.  I've opened a ticket with SAS and, based on my research, am proposing two things to implement during my "preboot" before my next attempt:   1) Turn off endpoint/anti-virus scanning to ensure it doesn't grab the dll and hold it 2) Temporarily set all of the SAS services to 'Manual' so they do not summon or load any modules that might be branching to and locking sashost.dll   Can y'all think of any others?   Thanks! TimR ... View more