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> Use this file to discover available pages before exploring further.
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# How to upgrade an existing TruGrid Sentry installation

# __How to upgrade the TruGrid Sentry Agent__


1. **UNINSTALL EXISTING SENTRY AGENT**
* Remote into the server that has the TruGrid Sentry agent installed onto it. 
* Go to Programs and uninstall the TruGrid Sentry
| Note: You can find the server name from the TruGrid Portal. 
| [__How to find Domain Activation Code__](https://help.trugrid.com/en/article/how-to-find-domain-activation-code-wo95e4/)
2. **INSTALL AND ACTIVATE THE LATEST SENTRY AGENT VERSION:** 
* Download the latest [TruGrid Sentry Agent](https://www.trugrid.com/downloads/sentry). 

| Note: TruGrid Sentry is supported on Windows Server 2016 and later. 

* Ensure the server to use for TruGrid Sentry is fully patched with Windows OS updates and has the [latest version of .NET Framework](https://dotnet.microsoft.com/download/dotnet-framework) is installed. 
* TruGrid recommends at least two Sentry servers for redundancy and scalability. One will suffice for environments that don't desire redundancy
* If the installation of the TruGrid Sentry agent is disrupted, this is generally due to either: a) EXE or directory (c:\program files\trugrid\sentry\) needs to be whitelisted in AV or IDS agent or b) [outbound traffic IP address restrictions](/en/article/how-to-whitelist-trugrid-outbound-traffic-on-the-firewall-1nniv4f/).
* If installation throws Access Denied message, please refer to [this article](/en/article/how-to-fix-access-denied-error-when-installing-trugrid-sentry-for-secure-rdp-11daef8/).
* If required by TruGrid Customer Care, Sentry installation log is at: %userprofile%\AppData\Roaming\TruGrid

3. **INSTALL AND ACTIVATE THE LATEST SECURE CONNECT AGENTS:**
* If you happen to be using Secure Connect agents on AD or non-AD machines, make sure you have the [latest versions installed](/en/article/how-to-setup-the-secure-connect-agent-for-non-ad-machines-3xq7eq/)
4. **TEST AD LOGINS:** Please test out the installation by trying to login with a test Active Directory login from the domain. Please follow [this guide ](/en/article/trugrid-secure-rdp-setup-guide-for-windows-end-users-1rgzxud/) to test from a Windows computer.
5. **CHECK-IN WITH TRUGRID SUPPORT:** Notify live chat support and we can check that everything is reporting in ok and looks good from our side. We can also ensure you are being routed via the latest connectivity network.

For the fastest support, please contact TruGrid via the Live Chat icon on the bottom right. This is the fastest way to initiate contact with TruGrid. TruGrid can use video conferencing for additional support as desired.

**Reference articles**
* [How to setup the TruGrid Sentry Agent](/en/article/trugrid-sentry-secure-rdp-installation-steps-1of2etj/)
* [How to setup the Secure Connect Agent](/en/article/how-to-setup-the-secure-connect-agent-for-non-ad-machines-3xq7eq/)
* [Latest Versions and Release Notes](/en/article/trugrid-product-release-notes-1b3ott8/)