Endpoint Protection

pls, I need a help

My Symantec endopint Protection cannot see hidden infected files... Only after I check Show hidden files, folders and drives in folder options, symantec begins to recognize hidden infected files.
Is that bug in sep or ... ?

 SEP can detect a file even if it is hidden , system file, API hidden.
SEP AV loads in Kernel and it has access over the whole HDD and RAM so it can detect a virus anywhere even if it is loaded in memory..

when I have hidden files, none of my infected files not detected by sep, but when I have unhidden files sep begins to detect infected files.
The same thing is happening on other computers with my colleagues.

 Well it doesn't matter but still what SEP version are you using ?
Have you tried testing it with a  Eicar.org test malware file.
Create a folder inside that create hidden folder and paste the zip file over there then scan the top folder with SEP. If nothing is detected then unhide the folder inside the top folder and scan again.
SEP should detect the file in the first place.

sep detects files which are hidden, mostly there could be reason of AP not functioning.

You may excercise the steps as suggested by Vikram Kumar.

ok. it's maybe my mistake.thanks for answers