now i use window 8.1 i cant open the loader ,it shows missing error?

[Guckme123]

missing

api-ms-win-crt-runtime-|1-1-0.dll

what should i do?

[Immortal]

missing

api-ms-win-crt-runtime-|1-1-0.dll

what should i do?

You need to update your windows (not necessary to windows 10) just a regular update to get the essential files
Then reinstall the requirements again.