---
title: New ECat Update Version 6.0.364.0 Now Available and Version 6.0.363.3 Also Available
description: New ECat Update Version 6.0.364.0 Now Available and Version 6.0.363.3 Also Available
---

[Rep Updates ](https://repcentral.aaon.com/rep-updates)

# [New ECat Update Version 6.0.364.0 Now Available and Version 6.0.363.3 Also Available](https://repcentral.aaon.com/rep-updates/new-ecat-update-version-6.0.364.0-now-available-and-version-6.0.363.3-also-available)

 Written by [AAON Marketing](https://repcentral.aaon.com/rep-updates/author/aaon-marketing) | Feb 17, 2026 11:22:34 PM

**IMPORTANT UPDATE  
**The issue preventing ECat V6 from running after 4pm CT on 2/13/2026 has been resolved. Two versions are now available: 363.3 and 364.0.

Version 363.3 is recommended until 364.1 is released. While 364.0 works for some users, we are still addressing reported issues.

**If you continue to have problems in V364.0:**

- Install the [.NET Desktop Runtime 9.0.13 x64](https://dotnet.microsoft.com/en-us/download/dotnet/thank-you/sdk-9.0.311-windows-x64-installer?utm_campaign=ECat%20Updates&utm_source=hs_email&utm_medium=email&_hsenc=p2ANqtz-_C-vPqqYAXfHroWiNzfWHQnHK1UtwScrYl3qHWzzOnv6PwUD6opm7wT8a9LzfvwdyCWgkI) if prompted
- Restart ECat if you receive a “not a valid user” error; if it continues, email [aaonregistration@aaon.com.](mailto:aaonregistration@aaon.com)
- Run ECat as Administrator if authentication or orders do not load
- Switch to 363.3 if editing orders causes crashes or you cannot create new orders.
- If it has been 12+ hours, try 364.0 again before switching.

**Switching versions  
**Uninstall 364.0 before installing 363.3. Saved orders will not be affected. If 363.3 shows a “not a valid user” error, contact [ECatSupport@aaon.com](mailto:ECatSupport@aaon.com) for a cache update.

**Known issues  
**RNA/RZA units may show a blank motor casing. Please verify the casing is not blank and matches the printed submittal.

[Visit ECat page](https://repcentral.aaon.com/ecat?utm_campaign=ECat%20Updates&utm_source=hs_email&utm_medium=email&_hsenc=p2ANqtz-_C-vPqqYAXfHroWiNzfWHQnHK1UtwScrYl3qHWzzOnv6PwUD6opm7wT8a9LzfvwdyCWgkI)

[View full post](https://repcentral.aaon.com/rep-updates/new-ecat-update-version-6.0.364.0-now-available-and-version-6.0.363.3-also-available)

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