> For the complete documentation index, see [llms.txt](https://docs.orkestra.online/orkestra-online/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.orkestra.online/orkestra-online/faq-known-issues/1.8.3-upgrade-from-previous-version.md).

# 1.8.3 upgrade from previous version

We strongly encourage everyone to use 1.8.3 as it is the most developed, up to date and stable version of Orkestra. Here are the steps to follow if the upgrade doesn't go well: 

## 1. Uninstall any version of Orkestra you have

You can use the windos add/remove program te delete any version of Orkestra.

## 2. Make sure all Orkestra locations are cleaned up

This is a precautinary step, as most times the uninstall is enough. However, we've had some cases of files remaining after uninstall. The locations to check are : 

* %programfiles%\orkestra : if there is anythign left here, you can simply delete it
* %programdata%\autodesk\revit\addins\\\<version> : make sure that there is no OrkestraAddin.addin file at this location for the version of Revit you are working on

## 3. Install Orkestra 1.8.3

Use the Orkestra 1.8.3 installer that you can get from our website [here](https://github.com/OrkestraOnline/Orkestra_Online/releases/download/1.8.3/Orkestra.v.1.8.3.msi).

If none of this fixes your issue, please reach out to <helpdesk@orkestra.online> or on our [github issues ](https://github.com/OrkestraOnline/Orkestra_Online/issues)page .&#x20;