How to Install and Manage Revit Plugins
Seven steps in Revit, or one sentence in Mira.
Do it with MiraInstall a Revit plugin, or add-in, from Autodesk's Design and Make Marketplace or its maker's installer, then start Revit. Its tools appear on the Add-Ins tab or its own tab. Turn add-ins off in Add-Ins Manager on the Manage tab (2025.3 and later).
Or, just ask Mira, a free add-in, to replace a product name in every text note.
How to do it in Revit
Step 1: Check that it supports your Revit version
An add-in loads only in the Revit versions it was installed for, because each version reads its own add-ins folder (Autodesk Help: Registration of add-ins). Before you download, check that the developer lists your exact version: 2025, 2026 or 2027. Revit LT doesn't support add-ins at all (Autodesk Help: Install Add-Ins).
Step 2: Download the installer
For an add-in from another developer, search the Autodesk Design and Make Marketplace and filter by Revit and your version, or get it from the developer's own site. Revit Help still calls the Marketplace the Autodesk App Store.
For one of Autodesk's own add-ins, sign in at manage.autodesk.com, click View Details on the Revit card, pick the tab for your Revit version and click Extensions under Available Downloads (Autodesk Help: Install Add-Ins).
Step 3: Run the installer, then start Revit
Run the installer, follow its prompts, then start Revit. The installer puts a small .addin manifest file, which tells Revit what to load, in one of the folders Revit reads at startup (Autodesk Help: Add-in Registration).
For your Windows user only, that folder is %APPDATA%\Autodesk\Revit\Addins\2025 (or 2026, 2027). For all users, it is C:\ProgramData\Autodesk\Revit\Addins\2025 (or 2026) in Revit 2025 and 2026, and C:\Program Files\Autodesk\Revit\Addins\2027 in Revit 2027. Marketplace apps install as a .bundle folder under ApplicationPlugins instead (Autodesk: Revit publisher guidelines).
Step 4: Answer the security prompt
Revit checks an add-in's digital signature before loading it and asks you to confirm one that isn't from Autodesk. For an unsigned add-in, Always Load stops the question for that file in that location, Load Once loads it this time only and Do Not Load skips it (Autodesk Help: Security: Unsigned File or Add-In). For an add-in signed by another publisher, Always Load trusts every file signed with that publisher's certificate.
If Revit reports an Invalid Signature, don't load it: the file may have been altered or corrupted, or its certificate revoked. Get a fresh copy from the publisher.
Step 5: Find its tools on the ribbon
Look on the Add-Ins tab, between Manage and Modify (Autodesk Help: Install Add-Ins). Simple commands sit in its External Tools drop-down. Add-ins with their own panels put them on the Add-Ins tab, the Analyze tab or a tab of their own (Autodesk Help: Ribbon Panels and Controls); a Marketplace app with several panels gets a tab named after the app.
Step 6: Turn add-ins on or off
In Revit 2025.3 and later, click Manage tab › Extensions › Add-Ins Manager. Check or clear single add-ins, all of them or macros, then click OK. Changes take effect the next time Revit starts, and they apply to your Windows user only (Autodesk Help: Add-Ins Manager).
The list also shows each add-in's last load time, useful when Revit is slow to start. An item with a lock icon was locked by an administrator with the (Admin) Add-Ins Manager (2025.4 and later) and can't be changed here (Autodesk Help: (Admin) Add-Ins Manager).
If an add-in stops Revit from starting, run Revit Add-Ins Manager from the Windows Start menu and switch it off there.
Step 7: Track down an add-in that causes problems
Autodesk's routine: in Add-Ins Manager, click Disable all Add-ins, click OK and restart Revit. If you open cloud models (BIM 360 Document Management or Autodesk Docs, called Forma Data Management in the Revit 2027 help), clear the check mark at the top of the column instead, then recheck Autodesk Collaborate so cloud features keep working (Autodesk Support: How to disable add-ins for Revit).
If the problem goes away, turn add-ins back on one at a time or in small groups, Autodesk's own first, until it returns. If it started recently, start with the add-in you installed or updated most recently. Update the culprit, and if the problem survives the update, contact its maker (Autodesk Support: Check if add-ons are causing unexpected behavior in Revit).
What to watch for
On Revit 2025 before the 2025.3 update, there is no Add-Ins Manager. Autodesk's manual method: close Revit, move the add-in files out of C:\ProgramData\Autodesk\Revit\Addins\2025 (and the per-user and ApplicationPlugins folders, if they hold any), then start Revit. For cloud models, leave Autodesk.Collaborate.addin, ExportViewSelectorApp.addin and the ExportViewSelectorAddin folder in place (Autodesk Support: How to disable add-ins for Revit).
Revit 2027 moved the all-users add-ins folder to C:\Program Files\Autodesk\Revit\Addins\2027 and no longer looks under ProgramData (Autodesk Help: Registration of add-ins). An installer built before the move can put its file where 2027 never reads it, so get the developer's 2027 build.
Check add-ins after Revit updates, not just upgrades. Revit 2025 moved add-ins to .NET 8, so older ones had to be rebuilt, and Revit 2027 runs on .NET 10 (Autodesk Help: Migrating Revit to .NET 10). Autodesk also scheduled updates moving Revit 2025 and 2026 to .NET 10 (2026.5 first) and says add-ins affected by .NET 10's breaking changes must be recompiled. Test your add-ins on each update before your firm installs it.
Grayed-out buttons aren't always a fault. Revit enables add-in commands only when no other command or edit mode is active, so finish or cancel (Esc) what you're doing first. Developers can also hide a command in the Family Editor or when no model is open, or gray it out where it doesn't apply (Autodesk Help: Add-in Registration).
At firm scale add-ins drift. Each Revit version has its own add-ins folder, and Add-Ins Manager settings are per Windows user, so two people on one project can have different tools loaded. A new Revit version starts with only what someone installed for it. The (Admin) Add-Ins Manager (2025.4 and later) lets a BIM manager lock add-ins on or off with one settings file per Revit version. For repetitive edits, such as replacing a product name in every text note, the AI agent for Revit works differently from a button: you ask in plain words, it shows what it will change and nothing is written until you confirm. Pirros in Revit puts your firm's details and families from past projects in a sidebar inside Revit.
Or, just ask Mira to do it.
Mira is an AI thinking partner for Revit that automates the work you repeat and builds tools your team needs.
- Type this in Mira
Replace 'VCT' with 'LVT' in every text note.
Mira searches every view, not just the open one, shows you the list of notes it will change and waits for your OK, and one undo puts every note back.
What is a Revit add-in?
Where are Revit add-ins stored?
Why is my Revit add-in not showing up?
How do I disable or uninstall a Revit add-in?
Where can I download Revit add-ins?
Which Revit versions does Mira work with?
Try it yourself.
Or bring it to the firm.
The download is free and takes a minute. The firm conversation is where your standards, your library, and your rollout get built. Start wherever makes sense.