Specification: Windows 10 with Norton Antivirus and CCleaner.
When I try to create a folder named "a", it disappear from the explorer just after the action. I noticed the explorer says a message "working on this", it take some time and then the message disappear too.
Now it seems that the folder doesn't exist. But when I try to create another folder with the same name I got the error 0x80070103.
When I try to create a folder with the name "b". Something different happens. The folder is changed to an unamed file with no extension just like the following image:
In safe mode I can do everything; also I can see the folder just like I created. Back in normal mode, I tried to use Windows Process Explorer but I can see which process is locking/using the folder. In safe mode, I can delete, create new files inside the folder "a" or "b" but in normal mode, I can't access them. No way.
I full scan with Norton Antivirus: no virus. I bought spyhunter: it isn't related. CCleaner Pro: it isn't related. I tried Scan disk, windows tool for correcting errors... no hell. Stopped Norton Antivirus: same situation.
It seems some software/virus is bug me down. I need folder like this because tools like SVN and Android Studio has idiosyncrasies about file and folder structure that just use this names.
Please help, can't just format everything and start again..
EDIT 1: A Test from DOS
The folder "b" disappeared and the folder "a" look like a file with no name and extension.
By doing a DOS "dir" command, I have the following result:
In this pic, "Pârametro Incorreto" means "Incorrect Parameter". Arquivo means "File". Past means "Folder". It says 1 file and 2 folders were found but there is tree folders inside.