---
title: "Missing ControlUp TCP port 40705 access to the target computer"
slug: "missing-controlup-tcp-port-40705-access-to-the-target-computer"
updated: 2024-04-30T10:58:37Z
published: 2024-04-30T10:58:37Z
canonical: "support.controlup.com/missing-controlup-tcp-port-40705-access-to-the-target-computer"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://support.controlup.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Missing ControlUp TCP port 40705 access to the target computer

## ControlUp Agent Error Message
Failed to open connection to the remote agent. Failed to open connection. 

```
Could not connect to net.tcp://FQDN:40705/cuAgent. 
The connection attempt lasted for a time span of 00:00:XX:XX:XX. TCP error code 10060: 
A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond IP_ADDRESS:40705.* 
```

## Suggested Solution
Configure an inbound Windows firewall rule to allow incoming access to port 40705. You can do this with PowerShell:

```powershell
New-NetFirewallRule -DisplayName "ControlUp Agent Port" -Direction Inbound -LocalPort 40705 -Protocol TCP -Action Allow
```

Alternatively, you can automate this task by configuring the “Define inbound port exceptions” GPO setting and adding the following value: “40705:tcp:*:enabled:ControlUp-Agent”

To learn more about the Diagnostic Actions, watch our [video](https://cuacademy.controlup.com/real-time-dx-setup-3-diagnostic-actions/){target=`_blank`}.