Windows 10: Why I can't create a folder named "a" or "b"?

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.

I was trying to stop services in normal mode which didn't run in safe mode, then I have accidentally solved the problem this morning.

Here in Brazil, a lot of users complain about GBPlugin - a technology most bank companies require users to use in order to access their bank account online. This GBPlugin consumes lots of resources and requires a highly skilled approach to be removed from the OS.

I tried to remove it following this post. Somebody named "DigRam" suggested a scan with AdwCleaner which had shown two suspect services:

1. 412f21e02ea37d13c378594fcbac2bd2
2. scan

AdwCleaner scan result has no effect on GBPlugin at all but had these two - suspicious. But after the Windows reboot I could finally see, create, change and delete the folders which had been hidden (in normal windows mode).

I can't determine who was the troublemaker and I really don't care right now. Both were killed and the OS is OK now.

Finally:

• I couldn't remove GBPlugin yet, but that is another problem with an existing solution.
• I bought spyHunter which I regret.

Below, is the scanning result

# AdwCleaner v6.000 - Relatório criado 21/08/2016 às 09:08:22
# *Updated on 12/08/2016 by ToolsLib
# Banco de dados : 2016-08-21.1 [Servidor]
# Sistema operacional : Windows 10 Pro  (X64)
# Usuário : eduar - MOBISTATION
# Executando de : C:\Users\eduar\Downloads\adwcleaner_6.000.exe
# Limpar
# Apoio : https://toolslib.net/forum



***** [ Serviços ] *****

[-] Políticas do IE excluídas412f21e02ea37d13c378594fcbac2bd2
[-] Políticas do IE excluídasscan


***** [ Pastas ] *****

[-] RestauradoC:\Users\eduar\AppData\Roaming\ParetoLogic
[-] RestauradoC:\ProgramData\ParetoLogic
[-] RestauradoC:\Program Files (x86)\xtex
[-] RestauradoC:\Users\Public\Documents\dmp
[-] RestauradoC:\Users\eduar\AppData\Local\Geckofx


***** [ Arquivos ] *****



***** [ DLL ] *****



***** [ WMI ] *****



***** [ Atalhos ] *****



***** [ Tarefas agendadas ] *****



***** [ Registro ] *****

[-] Restaurado[x64] HKLM\SOFTWARE\Classes\CLSID\{65416821-217D-44BD-9C61-F53398FB1B46}
[-] Restaurado[x64] HKLM\SOFTWARE\Classes\CLSID\{6DFC0DC7-FDC5-44C2-8B80-5977BA8F8ACC}
[-] Restaurado[x64] HKLM\SOFTWARE\Classes\CLSID\{E5AFF088-92F8-41a9-8CAB-E9CDCCE967AC}
[-] Restaurado[x64] HKLM\SOFTWARE\Classes\CLSID\{4ABDD67C-44E3-42E0-816D-D7F0E54761DF}
[-] Restaurado[x64] HKLM\SOFTWARE\Classes\CLSID\{94915A56-4D71-4F85-B59C-CC040F5AC6F0}
[-] Restaurado[x64] HKLM\SOFTWARE\Classes\Interface\{65416821-217D-44BD-9C61-F53398FB1B46}
[-] Restaurado[x64] HKLM\SOFTWARE\Classes\Interface\{4ABDD67C-44E3-42E0-816D-D7F0E54761DF}
[-] RestauradoHKLM\SOFTWARE\Classes\Interface\{65416821-217D-44BD-9C61-F53398FB1B46}
[-] RestauradoHKLM\SOFTWARE\Classes\Interface\{4ABDD67C-44E3-42E0-816D-D7F0E54761DF}
[-] RestauradoHKLM\SOFTWARE\Classes\TypeLib\{34F4FEAF-4921-4B5D-8BE5-CA384BFFC2CE}
[-] RestauradoHKLM\SOFTWARE\Classes\TypeLib\{39A37965-0A96-43A3-870E-821FE5C84B0B}
[-] Restaurado[x64] HKLM\SOFTWARE\SmartPCFixer
[-] RestauradoHKU\S-1-5-21-3215691145-4218728392-1243681445-1001\Software\IM
[-] RestauradoHKU\S-1-5-21-3215691145-4218728392-1243681445-1001\Software\ParetoLogic
[#] *Key deleted on reboot: HKCU\Software\IM
[#] *Key deleted on reboot: HKCU\Software\ParetoLogic
[-] RestauradoHKLM\SOFTWARE\ParetoLogic
[-] RestauradoHKLM\SOFTWARE\SmartPCFixer


***** [ Navegadores ] *****

[-] [br.ask.com] [Search Provider] Excluídobr.ask.com


*************************

:: Chaves "Tracing" excluídas
:: Configurações Winsock restauradas

*************************

C:\AdwCleaner\AdwCleaner[C0].txt - [2494 *Bytes] - [21/08/2016 09:08:22]
C:\AdwCleaner\AdwCleaner[S0].txt - [2676 *Bytes] - [21/08/2016 09:04:40]

########## EOF - C:\AdwCleaner\AdwCleaner[C0].txt - [2642 *Bytes] ##########