- Home
- Support
Support
How can we help?
Most answers are one click away. If something still does not work, send diagnostics from the pane and write to us: during the beta we reply within two working days.
System requirements
What ClashFree needs.
The installer checks the essentials and tells you what is missing.
| Revit | Autodesk Revit 2023, 2024, 2025, 2026 or 2027. One installer for all; you tick the versions. |
|---|---|
| Windows | Windows 10 or 11, 64-bit. Installs for your Windows user, no administrator rights. |
| WebView2 | Microsoft Edge WebView2 Runtime for the pane. Windows 11 has it; the installer offers it when it is missing. |
| AI | Your Anthropic API key, or Claude Desktop or Claude Code for MCP. |
| Clash reports | Navisworks XML clash reports or BCF (2.1, 3.0). Without a report you can pick the two clashing elements in Revit. |
| Internet | For activation, AI calls (to your AI provider) and beta analytics. Keep and Reject work offline. |
Troubleshooting
Install and activation, fixed fast.
My invite code says it is expired or used up
A sign-up invite works on up to 3 machines and for 60 days. If it is used up or expired, sign up again with the same e-mail for a fresh code, or contact us. Your trial is per e-mail, so a new code does not restart or shorten it.
The confirmation or 6-digit activation e-mail did not arrive
Check spam and any quarantine your company uses; the sender is ClashFree. The confirmation link is valid 24 hours and the activation code 10 minutes. In the pane, Send again mails a new code (one per minute). Company filters sometimes hold new senders: ask IT to allow mail from clashfree.app.
"Your trial has ended"
The trial is 15 days from your first activation, counted in UTC calendar days. Any fix preview still open can still be rejected, so your model is never left half-changed. If you need more time on a real project, ask us.
My Revit version is not listed in the installer
The installer lists Revit 2023 to 2027 and greys out versions it cannot find on this PC. If a version you use is greyed out, check that it is installed for this Windows user, then run the installer again.
There is no ClashFree tab in Revit
Check that %AppData%\Autodesk\Revit\Addins\<year>\clashfree.addin exists for your Revit year. If Revit asked about an unsigned add-in and you chose Do Not Load, reinstall to reset it and choose Always Load.
"Windows protected your PC" when I run the installer
Beta builds may be unsigned. Click More info, then Run anyway.
The pane is blank
Install the Microsoft Edge WebView2 Runtime, then restart Revit.
Claude does not see ClashFree
With Revit and a model open, run "%LocalAppData%\Programs\ClashFree\ClashFree.Mcp.exe" doctor in a Command Prompt. It checks the connection and ends with one line to paste into a support e-mail. To connect again: ClashFree.Mcp.exe register --client claude-desktop (or claude-code), then restart Claude.
"Update required" or no new AI proposals
ClashFree checks for a new beta once a day. Each beta build stops making new AI proposals 120 days after it was built; Keep, Reject and stored proposals keep working. Close Revit and install the latest version over the old one.
Diagnostics and logs
Show us what happened, without your model.
Diagnostics are ClashFree's log lines as templates, with other values hashed: never your model, names, paths or chat.
- 1
Open Settings
In the ClashFree pane, open the menu (⋮) and choose Settings, then the Beta section.
- 2
Add a short note
What happened, and at which step. Never paste your API key or invite code.
- 3
Send diagnostics now
The result shows right below the button.
- 4
Tell us
Write to support with the time and what you expected. The full local log is at %LocalAppData%\ClashFree\logs\clashfree-<yyyyMMdd>.log if we ask for a line from it.
Known beta limitations
What ClashFree does not do yet.
We would rather tell you up front. Each of these is either a deliberate safety rule or on the list.
It does not detect clashes
Run your clash tests in Navisworks or a BCF tool and import the report, or pick the two clashing elements in Revit.
Pipes, ducts, conduit and cable tray
It moves runs of these four categories in your host model. Anything else is flagged for a person with a reason.
Other trades are never edited
Their clashes sit in Coordination. A ready-made hand-off to the owning trade is planned.
No duct reshaping yet
Keeping a duct's area while changing its width and height is planned, after a Revit spike.
Gravity drainage is hands off
It is never moved, by design; a clash where it would have to move is flagged to its owner.
Risers stay in their slab opening
Fixes on a riser stay within the storey's slab span; no new slab openings. Gravity stacks are flagged.
Re-checks are listed, not simulated
ClashFree says what an engineer must re-check (airflow, hydraulics, falls, firestops). It never claims they are fine.
Beta builds expire
Each build stops making new AI proposals 120 days after it was built. Install updates when the pane offers them.
English only
The pane and the AI's explanations are in English during the beta. Localised Revit works.
Uninstall
Leaving cleanly.
- 1
Delete your server data (optional)
In the pane: Settings → Beta → Delete my data on the server. It removes this install's usage events, diagnostics and shared clash content.
- 2
Uninstall
Windows Settings → Apps → ClashFree → Uninstall. It also removes ClashFree from Claude's configuration.
- 3
Local data
The uninstaller asks whether to remove %LocalAppData%\ClashFree too: logs, coordination profiles, report sets and the telemetry queue.
- 4
Your account
To delete your sign-up and e-mail as well, send a privacy request.
Still stuck?
Send diagnostics from the pane, then write to us. A person who builds ClashFree reads every message.