Ok thank you guys !!
I did what you advised me @Facinat  , I excluded claymore files in Windows Defender but I think I'll have to give the Claymore 11.7 folder as recommended @Call_Me_Bambi  , Windows Defender had to delete the file EthDcrMiner64.exe, I am not next but I will do it and you will be redirected, there is no reason that it is not ca! it works since more the last release of version 11.7.

Thanks guys ! :-)