c# - FileSystemWatcher not firing events on Windows Server 2012 -


i have developed web service monitors directory pdf files. service tested on different systems including several windows server 2012 instances , works fine.

the problem occurs when deploying customer's server - file watcher not raise events.

i created small test tool diagnose problem.

besides filesystemwatcher has timer, updates list of files in watched folder each 0.5 seconds.

screenshot of tool @ test server (on left) , on customer's (on right)

as can see, pdf file displayed in list on right (populated on timer event), while list on left empty (populated on filesystemwatcher events).

log on bottom not show file changes.

the customer government organization, has strict security setup , guess issue has it, but:

  • tool not throw errors (i make sure log every possible error)

  • we tried running tool administrator (same result)

  • generally, target folder contents can read without issues (see screenshot)

what complicates whole process don't have direct access target system , can send executables instructions.

does have idea why happen?

source code of test tool


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