UPDATE!!! Seems now it's working. I installed it and everything is going well :)
This thread can be closed, unless someone is still experiencing issues.
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I wanted to find an app to keep my itch io library organized, but when tried to download the latest version, I was redirected to an "Invalid file requested" blank page. I tried to download using many methods, but all of them lead to this page.
Step 1: Go to https://itch.io/app
Step 2: Click on "Start Download"
Step 3: Get redirected to the blank page (https://broth.itch.zone/install-itch/windows-amd64/LATEST/unpacked/default) with the "Invalid file requested".
Still, I managed to download the installer from github, and I get another error:
itch-setup, head, built on Dec 4 2024 @ 05:41:52, ref no-commit HTTP file not found on server github.com/itchio/httpkit/htfs.normalizeError C:/Users/Administrator/go/pkg/mod/github.com/itchio/httpkit@v0.0.0-20200618110940-5044e418b971/htfs/file.go:570 github.com/itchio/httpkit/htfs.Open C:/Users/Administrator/go/pkg/mod/github.com/itchio/httpkit@v0.0.0-20200618110940-5044e418b971/htfs/file.go:182 github.com/itchio/httpkit/eos.realOpen C:/Users/Administrator/go/pkg/mod/github.com/itchio/httpkit@v0.0.0-20200618110940-5044e418b971/eos/eos.go:137 github.com/itchio/httpkit/eos.Open C:/Users/Administrator/go/pkg/mod/github.com/itchio/httpkit@v0.0.0-20200618110940-5044e418b971/eos/eos.go:67 github.com/itchio/savior/filesource.OpenPaused C:/Users/Administrator/go/pkg/mod/github.com/itchio/savior@v0.0.0-20200303195615-7cac7998294c/filesource/filesource.go:11 github.com/itchio/savior/filesource.Open C:/Users/Administrator/go/pkg/mod/github.com/itchio/savior@v0.0.0-20200303195615-7cac7998294c/filesource/filesource.go:25 github.com/itchio/itch-setup/setup.(*Installer).doInstall C:/msys64/home/amos/gitlab/builds/GicXyNJy/1/itchio/itch-setup/setup/setup.go:162 github.com/itchio/itch-setup/setup.(*Installer).Install.func1 C:/msys64/home/amos/gitlab/builds/GicXyNJy/1/itchio/itch-setup/setup/setup.go:142 runtime.goexit c:/go/src/runtime/asm_amd64.s:1373 htfs.Open (initial request) github.com/itchio/httpkit/htfs.Open C:/Users/Administrator/go/pkg/mod/github.com/itchio/httpkit@v0.0.0-20200618110940-5044e418b971/htfs/file.go:182 github.com/itchio/httpkit/eos.realOpen C:/Users/Administrator/go/pkg/mod/github.com/itchio/httpkit@v0.0.0-20200618110940-5044e418b971/eos/eos.go:137 github.com/itchio/httpkit/eos.Open C:/Users/Administrator/go/pkg/mod/github.com/itchio/httpkit@v0.0.0-20200618110940-5044e418b971/eos/eos.go:67 github.com/itchio/savior/filesource.OpenPaused C:/Users/Administrator/go/pkg/mod/github.com/itchio/savior@v0.0.0-20200303195615-7cac7998294c/filesource/filesource.go:11 github.com/itchio/savior/filesource.Open C:/Users/Administrator/go/pkg/mod/github.com/itchio/savior@v0.0.0-20200303195615-7cac7998294c/filesource/filesource.go:25 github.com/itchio/itch-setup/setup.(*Installer).doInstall C:/msys64/home/amos/gitlab/builds/GicXyNJy/1/itchio/itch-setup/setup/setup.go:162 github.com/itchio/itch-setup/setup.(*Installer).Install.func1 C:/msys64/home/amos/gitlab/builds/GicXyNJy/1/itchio/itch-setup/setup/setup.go:142 runtime.goexit c:/go/src/runtime/asm_amd64.s:1373 while opening remote signature file Error during warm-up
So, seems there is (at least in my case) no way to install the app.