Two things account for most Mira problems. Check these first:
1. Mira requires Revit 2025 or newer. It is not available for Revit 2024 or earlier.
2. Mira opens from the Add-Ins tab, not from the Pirros tab and not from a tab of its own.
Supported Revit versions
Mira installs for Revit 2025, 2026, and 2027.
If you run Revit 2024 or older, Mira will not appear there — and nothing is wrong with your installation. This is the most common reason people can't find Mira after installing it. If some of your Revit versions show Mira and others don't, that's expected: the installer only adds it to the supported versions on your machine.
Mira's Revit support is narrower than the Pirros plugin's. The Pirros Revit plugin covers many more Revit versions. The two products have separate installers and separate version support — having the Pirros plugin working in Revit 2023 tells you nothing about whether Mira will run there. It won't.
Mira doesn't appear in Revit
Work through these in order.
Check your Revit version. Mira needs 2025 or newer. See above.
Look in the Add-Ins tab. In Revit, click Add-Ins in the ribbon. You should see Mira by Pirros. Click it and the chat panel opens on the side. Mira does not create its own ribbon tab, and it does not appear under the Pirros tab.
Restart Revit completely. Close every Revit window and confirm no Revit process is still running, then reopen. A new add-in isn't picked up until Revit restarts.
Confirm the installer finished. Re-run the installer from mira.pirros.com and watch for an error at the end. If your firm restricts software installs, the installer may have been blocked — see below.
Check whether antivirus or endpoint protection quarantined the files. This is worth ruling out before contacting us, and your IT team can confirm it quickly.
Still missing after all five? Email [email protected] with the details listed at the bottom of this article.
You can't sign in to Mira
Check regional availability first. Mira is currently available in the US, Canada, UK, Mexico, Australia/New Zealand, and Italy. Sign-in from other regions is not supported yet, and it will fail no matter how many times you reinstall. If you're outside those regions, email [email protected] and we'll let you know when your region is added.
If you are in a supported region:
Use the same email you used to download Mira. If your firm already uses Pirros, that's your Pirros login.
You do not need a paid Pirros plan. Mira works without a Pirros subscription — you can sign up at mira.pirros.com on its own.
If a browser window opens and then hangs, close it, return to Revit, and click sign in again. If sign-in still doesn't complete, tell us — include whether a browser window opened at all.
Locked out of your Pirros account entirely? That's a different problem — too many failed password attempts can lock the account, and reinstalling Mira won't help. See Password Reset Not Working: How to Reset Your Account.
Revit fails to launch with Mira installed
If Revit fails to launch or crashes on startup, and the affected versions are the ones with Mira installed, treat it as an add-in conflict until proven otherwise.
Confirm which Revit versions are affected. If Revit 2024 and older start fine and only 2025+ fail, that narrows it to something installed on the newer versions — Mira among them.
Make sure you're on the latest Mira build. Reinstall from mira.pirros.com. Fixes for startup problems ship regularly and an older build may already be fixed.
List your other add-ins. Conflicts between third-party add-ins are the usual cause. Tell us what else is installed — that's usually the fastest route to a diagnosis.
Test with Mira removed. Uninstalling Mira and confirming whether Revit starts normally is the cleanest way to tell whether Mira is actually involved. Reinstall afterwards either way, and tell us the result.
Don't spend long on this alone. Startup crashes are specific to the combination of add-ins on a given machine, so send us the details rather than working through possibilities — we can usually identify it from your add-in list and the error text. If it's affecting several people at your firm, say so and we'll prioritise it.
Mira is asking permission for something
That's not an error. Mira asks before it changes anything, and prompts like Allow CreateDynamicTool come from the Mira panel itself. They are not Windows prompts, they do not require administrator rights, and you do not need to contact IT or a Pirros administrator. Click Allow.
See Mira Tool Permissions: What the "Allow" Prompts Mean for the full explanation, including why some prompts appear every time.
Mira and the Pirros plugin together
Mira and the Pirros Revit plugin are separate products with separate installers, and they are designed to run at the same time. Installing one does not install or affect the other, and you don't need to uninstall either to use the other.
If you're not sure which one you're looking at: Mira is a chat panel you talk to. The Pirros plugin gives you your firm's detail and family library.
What to send us
Include these and we can usually skip a round of questions:
Your Revit version (or versions, if some work and some don't)
What you were doing when it happened
The exact error text, or a screenshot of it
Any other Revit add-ins installed
Whether it affects just you or several people at your firm
For sign-in problems: the country you're signing in from
Use the chat icon inside Mira, or email [email protected].
Frequently Asked Questions
Q: I have the Pirros plugin working in Revit 2023. Why isn't Mira there?
A: Mira only supports Revit 2025 and newer. The two products have different version support, so the Pirros plugin working in an older Revit tells you nothing about Mira.
Q: Do I need admin rights to use Mira?
A: You need admin rights on your computer to run any installer, including Mira's — the same as any Windows software. You do not need admin rights to use Mira afterwards, and you never need them to answer one of Mira's permission prompts.
Q: Mira worked yesterday and doesn't today. What changed?
A: Most often a Revit update, a new add-in, or an endpoint-protection policy change. Tell us what changed on the machine and we'll narrow it down.
Q: Can my IT team deploy Mira across all our machines?
A: Get in touch at [email protected] and we'll talk through the options for your environment.