Please confirm the following.

• I checked the existing issues for duplicate problems
• I have tried resolving the issue using the support portal
• I have ensured my Modrinth App installation is up to date

What version of the Modrinth App are you using?

0.21.6

What operating systems are you seeing the problem on?

Windows 11 Pro (x86_64)

Describe the bug

I can no longer install or update content in the Modrinth App. Every attempt fails with a red "Download couldn't finish" message on the installation card, and the install report shows the job failed:

This happens every time (not just occasionally), and Retry does not help. I can still browse and download files from modrinth.com in a web browser, but the app itself cannot install or update anything.

Launcher log: https://pastebin.com/4wWrd568

Steps to reproduce

1. Open an existing Fabric instance (Fabric 26.3) that has a couple of content items.
2. Try to update or install new content
3. See the error occur

Expected behavior

Content should install/update normally instead of failing and rolling back.

Additional context

• My ISP is a german home fiber provider and I am not using a Proxy or VPN.
• Failure code: network_error, phase resolving pack, message: 403 Forbidden for https://api.modrinth.com/v2/version_files/update_many.
• May be related to Too many API errors; temporarily blocked": API circuit breaker gets permanently stuck at startup, blocking all browse/install while the API is healthy (v0.14.6) #6379.