[BUG] Title: Sessions not syncing across computers (Pro account)

Preflight Checklist

• [x] I have searched existing issues and this hasn't been reported yet
• [x] This is a single bug report (please file separate reports for different bugs)
• [x] I am using the latest version of Claude Code

What's Wrong?

Description:

The Claude Code desktop app shows "Sessions not syncing across computers" with a spinning indicator that never resolves.

Steps taken:

Signed out and back in via the app UI — did not resolve
Claude Code assistant investigated local config files (~/.claude/settings.json, project directories) — no issues found locally. Session .jsonl files are present on disk and readable. The sync failure appears to be on the server/account side, not a local config problem.
Environment:

OS: Windows 11 Pro (10.0.22631)
Account: Pro plan
Email: [tpteam@gmail.com](mailto:tpteam@gmail.com)
Expected behavior: Sessions sync to the cloud and appear on other computers.

Actual behavior: Sync spinner runs indefinitely, sessions do not sync.

What Should Happen?

it should sync

Error Messages/Logs

Steps to Reproduce

not syncing across accounts

Claude Model

Opus

Is this a regression?

I don't know

Last Working Version

haven't tried it till now

Claude Code Version

4.8 I don't know

Platform

Anthropic API

Operating System

Windows

Terminal/Shell

Windows Terminal

Additional Information

_No response_