Cowork FAQ

20+ frequently asked questions about Claude Cowork

Getting Started

Q: What is Cowork?

A: Cowork is Claude’s agentic desktop feature that lets you manipulate local files, create documents, and organize your workspace—without writing code. It runs in the Claude Desktop app and can autonomously execute multi-step file operations.

Q: How do I get access to Cowork?

A: You need:

A Pro ($20/mo) or Max ($100-200/mo) subscription
macOS or Windows (Linux not announced)
Claude Desktop app (latest version)
Enable in Settings → Features

Q: What are the usage limits?

A: Usage resets every 5 hours, not daily/monthly. Pro tier: ~45 short messages per reset (~1-1.5 hours intensive use). Max tier: 5x or 20x Pro’s limit. File organization and document processing tasks consume tokens rapidly—budget accordingly.

Q: Is Claude Cowork available on Windows?

A: Yes! Windows support was added on February 10, 2026. Cowork now runs on both macOS and Windows. Linux has no official announcement.

Important distinction:

Claude Desktop on Linux: Community workarounds exist (NixOS Flake is most reliable, also Debian packages, AUR)
Cowork on Linux: NO workaround. Cowork requires OS-specific system APIs for computer use that have no Linux equivalent

If you need agentic capabilities on Linux, use Claude Code (native support) instead of Cowork.

Q: Is Cowork the same as Claude Code?

A: They share architecture but differ in interface and capabilities:

Claude Code: Terminal interface, full shell access, for developers
Cowork: Desktop app, file-only access, for knowledge workers

See full comparison.

Capabilities

Q: What can Cowork do?

A: Core capabilities:

Read and write local files
Create Word, Excel, PowerPoint, PDF documents
Organize and rename folders/files
Extract data from images (OCR)
Process PDFs
Web research via Chrome

Q: What can’t Cowork do?

A: Cowork cannot:

Execute code or scripts
Make API calls
Access cloud storage directly (Google Drive, Dropbox)
Process audio or video
Decrypt encrypted files
Access network resources (except via Chrome)

Q: Can Cowork browse the web?

A: Yes, through Chrome integration. You grant Chrome access for specific tasks, and Cowork can search, read pages, and extract information. Form filling is limited and requires explicit user approval for each action. Purchases and logins are prohibited for security reasons.

Q: Can Cowork access Google Drive or Dropbox?

A: Experimental connectors available but unreliable (January 2026). Gmail and Drive connectors exist but have inconsistent authentication and task completion. Recommended workaround: Download cloud files to your local workspace first for reliable processing.

Q: Can Cowork run Python or shell scripts?

A: No. Cowork manipulates files only—it cannot execute code. Use Claude Code for code execution.

Q: What file formats can Cowork create?

Office: .docx, .xlsx, .pptx
Document: .pdf, .txt, .md
Data: .csv, .json
Web: .html

Q: Can Cowork create Excel formulas?

A: Yes! Cowork can create Excel files with working formulas, multiple sheets, and formatting. Specify your regional setting (US comma vs EU semicolon syntax) in your prompt.

Q: Is Claude in Excel the same as Cowork?

A: No. These are two separate products:

Claude in Excel (add-in launched Jan 24, 2026):

Microsoft Excel add-in
Works inside Excel application
Helps write formulas, analyze data in existing sheets
Windows + macOS (Excel 2016+)

Cowork’s Excel capabilities:

Part of Claude Desktop app (macOS and Windows)
Creates Excel files from scratch
Generates spreadsheets from unstructured data (receipts, images, text)

Rule of thumb: If you’re already in Excel and need formula help → use Claude in Excel add-in. If you need to generate a new spreadsheet from raw data → use Cowork.

See detailed comparison.

Q: What is Claude Legal?

A: Claude Legal is the first official Cowork extension (announced Feb 3, 2026) for automated legal document review. It helps identify key contract terms, detect compliance risks, and triage legal documents. Use it for contract verification, NDA review, and compliance tracking. Important: Claude Legal does NOT provide legal advice—all findings should be reviewed by a qualified legal professional. See Capabilities: Extensions & Plugins for details.

Q: What is the Customize tab?

A: The Customize tab in Claude Desktop is where you manage Skills, Connectors, and personalizations. Access it from the main app navigation. From there, install skills (like /pdf or /xlsx), configure external tool connectors with per-tool permissions, and adjust default behaviors.

Q: What are Skills?

A: Skills are add-on capabilities installed via the Customize tab. Each skill adds a specific power invoked via slash commands: /pdf for advanced PDF processing, /xlsx for Excel work, /docx for Word documents, /canvas-design for visual layouts. Skills can also be chained, for example using /pdf to extract content then /xlsx to format it as a spreadsheet. Official skills are at github.com/anthropics/skills. Community skills at claudemarketplaces.com, skills.sh, and skillhub.club.

Q: What is Desktop Commander?

A: Desktop Commander is an official Cowork extension (installed from the Customize tab) that expands file access beyond the workspace folder, enables cross-session memory via a memory.md file, and provides one-click MCP server installation. Installing it is the recommended next step after basic Cowork setup. See Getting Started Step 8.

Q: What are MCP Connectors?

A: MCP (Model Context Protocol) connectors let Cowork interact with external tools and services. Three types: web search connectors, desktop/local file connectors (via Desktop Commander), and custom JSON connectors for advanced integrations. You can set permissions per tool: Allow (automatic), Ask (confirm each time), or Block (never use). No coding required, just a few clicks in the Customize tab.

Q: Where can I find community skills?

A: Beyond Anthropic’s official skills at github.com/anthropics/skills, community-built skills are available at claudemarketplaces.com, skills.sh, and skillhub.club. Install any skill from the Customize tab by searching by name or pasting the skill URL.

Q: What are Cowork Plugins?

A: Cowork Plugins are official third-party integrations announced January 30, 2026. There are currently 11 plugins: Asana, Canva, Cloudflare, Figma, GitHub, Google Drive, Jira, Linear, Notion, Sentry, and Slack. They allow Cowork to interact directly with these services without browser automation.

Q: What is Opus 4.6’s context window?

A: Opus 4.6 (the model powering Cowork) supports up to 1M tokens in beta, a major upgrade from the previous ~200K effective limit. Output tokens have also increased to 128K (from 64K). Opus 4.6 also features adaptive thinking with 4 effort levels for better efficiency.

Q: What are scheduled tasks?

A: Scheduled tasks automate recurring Cowork operations. Two types: recurring (run automatically on a set cadence) and on-demand (triggered manually, run once).

Set them up in Claude Desktop → left sidebar → Scheduled section → New Task. Available cadences: hourly, daily, weekly, weekdays-only, or custom. After the first run, Cowork automatically rewrites your prompt to optimize it.

Important: Claude Desktop must be open and your device awake when a task fires. If the device is asleep, the task is skipped and runs when the device wakes.

See Scheduled Automation workflow for copy-paste prompts and patterns.

Q: Can I build custom plugins for Cowork?

A: Yes, with no coding required. Open the Plugins panel in Cowork, click Create Plugin, define your skills (reusable AI tasks), assign slash commands (e.g., /invoice, /followup), and bundle with connectors. Anthropic’s 11 official plugins are open-sourced and serve as templates to adapt. Custom plugins can be shared across your team. Admin users can also create private plugin marketplaces with organization-specific catalogs.

Q: What new connectors were added in February 2026?

A: On February 24, 2026, Anthropic added 12+ new MCP connectors. Key ones for SMBs: Google Calendar (scheduling), Gmail (email without Chrome), DocuSign (contract signing), WordPress (content management), and sales tools (Apollo, Clay, Outreach). Finance connectors (FactSet, MSCI, LSEG) target institutional workflows. All connectors are managed from the Customize tab with per-tool Allow/Ask/Block permissions.

Q: What is context compaction?

A: Context compaction (beta) automatically compresses conversation history during long sessions. This allows much longer effective sessions by keeping relevant context while removing redundant information. It partially addresses the previous limitation of no session persistence.

Q: What are Agent Teams?

A: Agent Teams (research preview) enable multi-agent coordination where multiple Claude agents work together on complex tasks. One agent can orchestrate others, each handling a specialized sub-task. This extends the existing sub-agent architecture with more sophisticated coordination.

Security

Q: Is Cowork secure?

A: There’s no official security documentation yet (research preview). You should:

Use a dedicated workspace folder
Never grant access to Documents/Desktop
Keep credentials out of workspace
Review every execution plan
Backup before destructive operations

See Security Guide.

Q: Can Cowork access all my files?

A: Only folders you explicitly grant access to. Best practice: create a dedicated ~/Cowork-Workspace/ folder and only grant access there.

Q: What is prompt injection and should I worry?

A: Prompt injection is when malicious content in files tries to manipulate AI behavior. Mitigation:

Only process files from trusted sources
Avoid files with instruction-like content
Review Cowork’s plan before approval

Q: Is my data sent to Anthropic’s servers?

A: File content is processed by Claude’s API, similar to pasting text in chat. No official data retention policy specific to Cowork yet. For sensitive data, consider if cloud AI processing is appropriate.

Q: Can I use Cowork for confidential business documents?

A: Not recommended during research preview. Wait for:

Official security documentation
Enterprise features (audit trail, access controls)
Compliance certifications

Troubleshooting

Q: Cowork stopped mid-task. What do I do?

Check output folder for partial results
Break the task into smaller pieces
Resume with explicit state: “Continue from X, remaining items are Y”

Common causes: context limit, timeout, network issues.

Q: Can I use Cowork with a VPN?

A: No. VPN software creates routing conflicts with Cowork’s internal VM networking. This is the #1 reported issue on r/ClaudeAI.

Exact error:

Failed to start Claude's workspace — VM connection timeout after 60 seconds

Why it happens: Cowork runs in a sandboxed virtual machine. VPNs intercept and reroute network traffic at the system level, breaking the host↔VM communication channel.

Solutions:

Disconnect VPN completely before using Cowork
If VPN required: Use split tunneling to exclude Claude Desktop
Corporate environment: May need to batch Cowork tasks when VPN is off

There’s no workaround that keeps VPN active. See Troubleshooting for details.

Q: My Excel formulas show as text or errors.

A: Regional syntax issue. Specify in your prompt:

US/UK: “Use comma separators in formulas”
EU: “Use semicolon separators in formulas”

Q: Cowork can’t access my folder.

System Preferences → Security & Privacy → Files and Folders
Find Claude Desktop
Enable your workspace folder
Restart the app if needed

Q: Chrome integration isn’t working.

A: Grant additional permissions:

System Preferences → Security & Privacy → Accessibility → Add Claude
Ensure Chrome is installed (not Chromium)

Q: How do I stop a running task?

A: Type “Stop” in the chat or close the conversation window.

Q: My task failed when my computer went to sleep.

A: Cowork requires the desktop app to remain open and active. There is:

No offline mode
No cross-device sync
No memory persistence between sessions

Prevention: Disable sleep during long tasks. For critical work, break into smaller checkpointed batches that can be resumed.

Q: What happens during an Anthropic outage?

A: Cowork sessions may:

Show elevated error rates
Fail tasks that previously worked
Become unresponsive

Action: Check status.anthropic.com, wait for resolution, don’t retry repeatedly (wastes quota).

Pricing & Access

Q: How much does Cowork cost?

A: Requires Pro ($20/month) or Max ($100-200/month) subscription. Pro is available now but has tighter usage limits—recommended for light use only.

Q: Pro or Max—which should I choose?

Pro ($20/mo): Occasional use, light file organization, small batches. Quota exhausts in ~1-1.5 hours intensive use.
Max ($100-200/mo): Heavy daily use, large batch processing, document-intensive workflows. 5x-20x more usage than Pro.

Q: Is there a usage limit with Cowork?

A: Yes. Usage resets every 5 hours (not daily/monthly). The ~200K token context window is the limit per session. Heavy tasks (file processing, OCR) consume tokens faster than chat.

Technical

Q: How does Cowork handle multiple files?

A: Cowork can spawn sub-agents that work in parallel. Each sub-agent has fresh context and works on part of the task. The main orchestrator assembles results.

Q: What’s the context limit?

A: With Opus 4.6, up to 1M tokens in beta (previously ~200K). Roughly:

600-2000+ text pages
200-400+ typical documents
200-400+ images (OCR)

Context compaction (beta) further extends effective session length by compressing older conversation history.

Q: Does Cowork remember across sessions?

A: Not by default, each session starts fresh. With Desktop Commander installed, you can create a memory.md file that persists context across sessions. Start each session with “Read ~/Cowork-Workspace/memory.md first.” Without Desktop Commander, the workaround remains saving context to a file and loading it next session. See Memory Setup workflow for details.

Q: Can I automate Cowork with scripts?

A: Not currently. Cowork has no API or automation interface (January 2026). For automation, use Claude Code.

Comparison

Q: When should I use Cowork vs Claude Code?

Cowork: File organization, document creation, data extraction—no coding
Claude Code: Software development, shell access, code execution

Q: When should I use Cowork vs Projects?

Cowork: Need to create files, organize folders, batch process
Projects: Just want to chat about documents, brainstorm, write

Q: When should I just use Chat instead of Cowork?

A: Chat (Projects/web) is better for:

Reasoning & strategy: Iterative dialogue, hypothesis testing, nuanced thinking
Code development: Claude Code integration, rapid test cycles
Writing & drafting: Live artifacts, inline iteration
Exploratory tasks: When requirements aren’t clear yet
Collaboration: Shareable links, team visibility
Mobile/any device: Zero-install access

Rule of thumb: Is the challenge intellectual (reason/write/code) or operational (organize/automate/batch)? Chat for the first, Cowork for the second. Most users: ~80% Chat, ~20% Cowork.

Q: Can developers benefit from Cowork?

A: Yes, for non-code tasks:

Organizing documentation
Creating reports from logs
Research compilation
File management

Future

Q: Is Cowork still in beta?

A: It’s in “research preview” status as of January 2026. Expect bugs and missing features. Not recommended for production use.

Q: What features are coming?

A: Recent additions (February 2026):

Windows support (released Feb 10, 2026)
11 official plugins (Asana, Canva, Cloudflare, Figma, GitHub, Google Drive, Jira, Linear, Notion, Sentry, Slack)
Scheduled tasks, Agent Teams (research preview), context compaction (beta)
Improved browser automation, Excel and PowerPoint direct integrations

Still unannounced: Linux support, enterprise features.

Q: Will there be an API for Cowork?

A: Unknown. Currently Cowork is desktop-only with no automation interface.

Q: Should I expect breaking changes?

A: Yes. Anthropic’s research previews have low stability patterns:

Models deprecated ~6-12 months post-release (60+ day notice)
UI features get backend changes that may affect workflows
Behavior may change between updates

Mitigation: Don’t build critical workflows that depend on Cowork’s exact behavior. Have fallback plans. Check r/ClaudeAI and status.anthropic.com for change announcements.

Still Have Questions?

Support: support.anthropic.com
Community: Reddit r/ClaudeAI
Feedback: Claude Desktop app → Feedback option

Back to Cowork Documentation