Suddenly connecting to localhost doesn't work anymore

[freaky63]

Hey, yesterday I've been trying a install a few websites, everything was working just fine until suddenly no matter what's in the htdocs folder, I couldn't connect to my server anymore, nor localhost our outside local network.
I'm using a hoster so usually it's port forwarded. It just opens up www.localhost and tells me I can't connect to the server.
Firewall was deactivated of course, but that shouldn't be the matter if you connect from localhost anyways, right?

PC:
Win7 64-Bit
7.2.9-0 Xampp version

This is what I've been doing before:
- Changing modules for php and apache to install a certain website
- Giving writing perms to all files in the htdocs folder
- Tried a few different websites in the htdocs folder

This is what I've tried:
- Reinstalled Xampp
- Giving complete write perms to htdocs folder again
- tried http://127.0.0.1:80/ and it worked at first, now I try either localhost, 127.0.0.1, http:// with them or ort on each (80 and 443) and nothing works

I'm completely clueless when it comes to apache and websites or any advanced coding as this is already way too confusing to me, especially because it happened all out of the sudden and reverting the changes I've applied doesn't seem to fix it.
Used the search function couldn't find any similar issue as well

[freaky63]

Pushing this, any help would be apppreciated still dont know how to fix it

[Nobbie]

I'm using a hoster so usually it's port forwarded.

That little sentence is so extremely super strange, at least here me and no one else have the slightest clue, what you are doing there. And what is the relationship to Xampp, Xampp does not need a hoster, Xampp does not need port forwarded to any hoster, it runs locally, extremey weird.. If you REALLY wants help, you have to explain BY FAR bettern than now. Currently i dont understand nothing.

[freaky63]

I mean, that was just some side information on what I was trying to do, I still described that I can't connect to my own website / localhost server via the browser. That's exactly whats wrong and I dont know how to explain it any better

Again then, I was trying to install some websites, after a few attempts, connecting to localhost doesn't work anymore. It just says "can't connect to server". I've been googling and for some other people using the port in localhost fixed it, so I tried 127.0.0.1:80 and it worked once, then I tried it again and it never worked again.