<p>You can not run Commerce 1 on Craft 3.</p>

<p>Commerce was completely re-written for Craft 3 compatibility.  Indeed the final release of Commerce 2 actually requires Craft 3.1.</p>

<p>That said, your license for Commerce 1 should work for Commerce 2 once you have that installed but note there is a lot more to upgrading sites to Craft 3/Commerce 2 than just installing the new versions - there are extensive changes needed to both - including template and fundamental changes to custom plugins if you have written any of those.</p>

<p>See:</p>

<ul>
<li><a href="https://docs.craftcms.com/v3/upgrade.html" rel="nofollow noreferrer">https://docs.craftcms.com/v3/upgrade.html</a></li>
<li><a href="https://docs.craftcms.com/commerce/v2/changes-in-commerce-2.html" rel="nofollow noreferrer">https://docs.craftcms.com/commerce/v2/changes-in-commerce-2.html</a></li>
</ul>

CC BY-SA 4.0
2019-01-29T23:44:55.600Z
2019-01-29T23:44:55.600Z
Jeremy Daalder
<p>Folks:</p>

<p>I've got an e-commerce site that I'm upgrading. I've upgraded to Craft 3 and can reach the CP and the home page.</p>

<p>This site is tightly integrated with Commerce 1. When I visit the plug-in page, Commerce is listed but "missing". I've attempted to claim the license (using the license number listed on the plug-ins page) but the license number is not recognized.</p>

<p>Do I have any options other than purchasing a complete new license? Is there a way to use Commerce 1 with Craft 3?</p>

<plugin-craftcommerce><plugin-craftcommerce2>
Upgrading Commerce 1 to Commerce 2
# Upgrading Commerce 1 to Commerce 2

(Asked by: username_0 on 2019-01-29)

Folks:

I've got an e-commerce site that I'm upgrading. I've upgraded to Craft 3 and can reach the CP and the home page.

This site is tightly integrated with Commerce 1. When I visit the plug-in page, Commerce is listed but "missing". I've attempted to claim the license (using the license number listed on the plug-ins page) but the license number is not recognized.

Do I have any options other than purchasing a complete new license? Is there a way to use Commerce 1 with Craft 3?

**Tags:** plugin-craftcommerce, plugin-craftcommerce2


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## 1 answers

### Answer by username_1 on 2019-01-29. Score: 1 | Accepted answer

You can not run Commerce 1 on Craft 3.

Commerce was completely re-written for Craft 3 compatibility. Indeed the final release of Commerce 2 actually requires Craft 3.1.

That said, your license for Commerce 1 should work for Commerce 2 once you have that installed but note there is a lot more to upgrading sites to Craft 3/Commerce 2 than just installing the new versions - there are extensive changes needed to both - including template and fundamental changes to custom plugins if you have written any of those.

See:

* <https://docs.craftcms.com/v3/upgrade.html>
* <https://docs.craftcms.com/commerce/v2/changes-in-commerce-2.html>


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