---
title: Can I renew support if it expired a year ago?
description: Information on how to renew your Astah Professional support if it has been expired for more than a year and how to ensure compatibility with specific versions.
---
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1. [Astah Help Center](https://lp.astah.net/en/knowledge-base?hsLang=en)
2. [Astah License FAQ: Activation & Renewal](https://lp.astah.net/en/knowledge-base/astah-license-faq-activation-renewal?hsLang=en)
3. [License Renewal - Perpetual](https://lp.astah.net/en/knowledge-base/astah-license-faq-activation-renewal?hsLang=en#license-renewal-perpetual)
# Can I renew support if it expired a year ago?
## Guidelines for renewing support periods that have been expired for over a year.
**Yes.** You can still renew your support even if it has been expired for a significant amount of time.
However, because a Support Renewal License extends the support period from the **previous expiration date** (not from the date of purchase), you may need to purchase multiple licenses to bring your account up to date.
### Renewal Requirements
The number of renewal licenses required depends on how long your support has been inactive:
- **Expired \< 1 year:** 1 Support Renewal License required.
- **Expired \> 1 year but \< 2 years:** 2 Support Renewal Licenses required.
- **General Rule:** You must purchase one license for every year (or fraction thereof) that has passed since expiration.
> **Example:** If your support expired **18 months ago**, you must purchase **two** Support Renewal Licenses to bridge the gap and reach a current, active status.
---
### Version Compatibility
When renewing, ensure that your new support end-date covers the **Release Date** of the specific version of Astah Professional you wish to use.
- You can use any version of Astah released *before* or *during* your active support period.
- To check release dates for specific versions, please refer to [our Release Notes](https://astah.net/support/astah-pro/release-notes/).
---
### How to Apply Multiple Renewals
#### 1. Purchase
Purchase the required quantity of **Astah Professional Support Renewal Licenses** (USD80 / €62 each) from the [online store](https://sites.fastspring.com/astah/product/astah-professional-support) or your preferred [distributor](https://astah.net/astah-resellers/?_sfm_reseller_region=Europe).
#### 2. Registration (CV Members Site)
1. Log into the [CV Members Portal](https://members.change-vision.com/en).
2. Go to **\[My Licenses\]**.
3. Select **\[Renew this license\]** from the **\[Actions\]** menu.
4. Enter the first license information.
5. Repeat the process for any additional renewal keys until the "Support End Date" reaches your desired timeframe.
#### 3. Update the Software
After renewing on the website, download the updated license file and set it within the application:
1. Launch Astah Professional.
2. Go to **\[Help\]** – **\[License\]**.
3. Click **\[Set License key\]** and select the new license file.
- [Astah License FAQ: Activation & Renewal](https://lp.astah.net/en/knowledge-base/astah-license-faq-activation-renewal?hsLang=en#main-content)
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