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2828* **Browsers can reach sign-in.** Sign-in happens in the user's default web browser, not in the app. Browsers on each device must reach the Claude for Government host, its sign-in service (a separate host that your Anthropic representative provides), and your agency's identity provider.
2929* **The device meets Claude Desktop's requirements.** See the Claude Desktop [system requirements](/docs/third-party/claude-desktop/installation#system-requirements) for macOS and Windows device requirements. For a Windows fleet, work through the [Windows fleet checklist](/docs/government/deploy-desktop/windows-checklist), which covers the Virtual Machine Platform feature that Cowork needs along with the installer, policy, and network prerequisites.
3030* **Windows devices used for Code have Git for Windows.** On Windows, only the Code part of Claude Desktop needs Git for Windows. Chat and Cowork work without it. Install Git on the devices whose users will work in Code, or turn **Code in Claude Desktop** off under [Product availability](/docs/government/config/settings#product-availability) so that users are not prompted to install Git.
31* **Devices used for Code have the software your users' work needs.** Code runs its commands with the software installed on the device. Cowork and Advanced file analysis in Chat run theirs in the app's own virtual machine, which includes Python.
3132* **You can install the app.** Installing by hand needs administrator rights on each device; see [Configure a single machine](#configure-a-single-machine) for what that means on each platform. Installing through your device management system does not, because the management system installs with elevated rights. The [macOS deployment guide](https://support.claude.com/en/articles/12611117-deploy-claude-desktop-for-macos) and the [Windows deployment guide](https://support.claude.com/en/articles/12622703-deploy-claude-desktop-for-windows) cover where to download the installer and how to distribute it.
3233* **The app is current.** Deploy Claude Desktop 1.46388.1 or later.
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247248| The app shows **Your session has expired** or **You've been signed out** with a **Sign in again** button, or a device that was already set up opens to the sign-in screen | The user's Claude for Government session ended, most often because they had not used Claude for longer than your tenant's [Session idle timeout](/docs/government/config/settings#session-idle-timeout). A device left idle, locked, or asleep does not keep a session alive. A session also ends at the Maximum session length, or when the user or an administrator signs it out. A user can have at most six active Claude Desktop sessions. When they sign in to Claude Desktop again while six are active, Claude for Government ends the Claude Desktop session that is closest to expiring. | Have the user sign in again. The app keeps its configuration and reconnects. If the session limit is the cause, the user can go to their [Sessions](/docs/government/account/sessions) page and sign out of sessions they no longer use. If people are asked to sign in more often than you intend, ask a tenant administrator to review **Session idle timeout** and **Maximum session length** on the [Config](/docs/government/tenant-admin/configuration) page. On Claude Desktop versions earlier than 1.34493.0 the same situation can appear as a **Configuration sync issue** banner instead, so update the app. |
248249| On a Windows device, Cowork tasks fail, the app shows **Failed to start Claude's workspace** with a message under it about a Windows update, or Claude can't read some attached files in Chat, such as Word, Excel, or PowerPoint files | The device has installed the Windows update released September 8, 2026, but not Microsoft's later update that fixes the problem. The September 8 update stops Claude's workspace from reaching files on the device. Cowork tasks and Advanced file analysis in Chat need the workspace. | Install the latest Windows update on the device and restart it. On Windows 11 24H2 and 25H2, the fix is KB5129195. No Claude Desktop update is needed. See [Resolved: Cowork on Windows](/docs/cowork/changelog#resolved-cowork-on-windows) in the Claude Desktop changelog. |
249250| Web search is on for your organization, but a user does not have it, and under **Customize**, then **Connectors**, **Web Search** shows as not connected and **Connect** fails, while chat works | A firewall or secure web gateway on that user's network path filters traffic by application. Claude Desktop connects to web search on your Claude for Government host over HTTPS, and such equipment can classify that connection as Model Context Protocol (MCP) traffic and block it even when the host itself is allowed. | Ask your network team to allow this traffic to your Claude for Government host for the affected users. The user's `main.log` records each failed attempt, including any block page the network returned. Then have the user select **Connect** next to **Web Search**, or restart the app. |
251| The app shows **Failed to start Claude's workspace** with a download error under it, or Chat conversations and Cowork tasks fail to start with "Host Claude Code binary not available. Check that the download completed." | Claude Desktop could not download a complete, verified copy of the Cowork workspace or the [agent helper](/docs/third-party/claude-desktop/installation#endpoint-security-software) from `downloads.claude.ai`. This usually means a proxy or web filter on the device's network path is blocking or altering the download. | Follow [Cowork workspace or Claude CLI fails to download](/docs/third-party/claude-desktop/installation#cowork-workspace-or-claude-cli-fails-to-download) in the Claude Desktop documentation. |
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251253For anything else, the app writes its log to `~/Library/Logs/Claude-3p/main.log` on macOS, `%LOCALAPPDATA%\Claude-3p\logs\main.log` on Windows, and `~/.config/Claude-3p/logs/main.log` on Linux. The log records which configuration keys were read or dropped and why. The diagnostic report from the verification checklist produces a bundle, without conversation content, that you can send to your Anthropic representative.
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