installing wordpress multisite

let me introduce myself. my name will be elad or eladgraphics. I like the way your instructions was setup and the courses you offer. I want to test drive your help and time to respond so that I will know if this is for me. thanks.

I am using windows 10

Now this is my question.

after installation wordpress following your instructions letter by letter. after i edit htaccess file when i try to login to wordpress I got this message.
Object not found!

The requested URL was not found on this server. The link on the referring page seems to be wrong or outdated. Please inform the author of that page about the error.

If you think this is a server error, please contact the webmaster.
Error 404
Apache/2.4.25 (Win32) OpenSSL/1.0.2j PHP/5.6.30