Could be long ACL lists with many unique ACEs that need looked up on AD, and/or slow ADCs, and/or slow AV, and/or slow net:
for each file show the outputs of $ ls -dl $f $ getfacl $f $ icacls "`cygpath -m $f`" and also attach as text, the output from strace on the cp command, as it will show the timing and delays e.g. $ strace -o cp-strace.log cp ... I couldn't run strace on the Cygwin command because the issue is really intermittent. I did have another Cygwin cmd, 'mv', that was hung so I ran the commands below on the file it was trying to move: D:\lsenv\law\lsapps\edi\work>ls -dl valid_ediout.20230413113258.tmp -rwxrwxrwa 1 Administrators INFORBC\Domain Users 749 Apr 13 valid_ediout.20230413113258.tmp D:\lsenv\law\lsapps\edi\work>getfacl valid_ediout.20230413113258.tmp getfacl: valid_ediout.20230413113258.tmp: No such file or directory D:\lsenv\law\lsapps\edi\work>icacls "`cygpath -m valid_ediout.20230413113258.tmp" 'cygpath -m valid_ediout.20230413113258.tmp; The system cannot find the file specified. Successfully processed 0 files; Failed processing 1 files -- Problem reports: https://cygwin.com/problems.html FAQ: https://cygwin.com/faq/ Documentation: https://cygwin.com/docs.html Unsubscribe info: https://cygwin.com/ml/#unsubscribe-simple