You can disable Incognito Mode in Chrome with a simple registry tweak. In regedit.exe, create the key HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Google\Chrome , with a single dword value, called IncognitoEnabled and with value 0.

When you next start Chrome the New Incognito Window option will be greyed out.

Or you can create .reg file by opening up notepad, pasting the below in and saving it as eg incognito.reg. Once saved just double click the reg file to inport it.
Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Google\Chrom e]
"IncognitoEnabled"=dword:00000000

? Chrom nepouzivam, tak tipuji, ze je to ono.

Ale je to nesmysl. Veci, kam leze, se zjistuji jinak.