# Can't Install Elastic Agent On Windows Server

**URL:** <https://discuss.elastic.co/t/cant-install-elastic-agent-on-windows-server/389779>\
**Category:** Elastic Agent\
**Created:** [August 19, 2026, 10:17am UTC](https://discuss.elastic.co/t/cant-install-elastic-agent-on-windows-server/389779 "2026-08-19T10:17:48Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![mureeb](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/mureeb/32/148061_2.png) [@mureeb](https://discuss.elastic.co/u/mureeb)\
**Post date:** [August 19, 2026, 10:17am UTC](https://discuss.elastic.co/t/cant-install-elastic-agent-on-windows-server/389779/1 "2026-08-19T10:17:48Z")

</div>

**Environment Context:**

- **OS:** Windows (x86\_64)

- **Elastic Agent Version:** 9.5.1

- **Deployment:** Fleet-managed (On-Prem/Self-Managed Fleet Server)

- **Endpoint Protection:** Kaspersky EDR (Disabled during troubleshooting)

**Issue Summary:** I am experiencing a persistent installation and startup failure with Elastic Agent 9.5.1 on a Windows host. The background daemon crashes immediately upon startup, failing to open the local IPC named pipe. This appears to be triggered by a missing component binary (`elastic-otel-collector.exe`) despite the presence of its configuration spec (`.spec.yml`).

**Chronological Error Chain:**

**1. Component Validation Failure (Seen during uninstall and install):** When running `uninstall` or `install --force`, the agent fails with:

```auto
Error: error uninstalling agent: error uninstalling components: failed to detect inputs and outputs: missing matching binary for C:\Program Files\Elastic\Agent\data\elastic-agent-9.5.1-59b3fd\components\elastic-otel-collector.spec.yml

```

**2. Daemon Crash / Pipe Timeout (Seen during enrollment loop):** During a fresh `install` attempt, the agent hangs on `Waiting For Enroll...` and fails with:

```auto
Restart attempt 3 failed: 'rpc error: code = Unavailable desc = connection error: desc = "transport: Error while dialing: open \\.\pipe\elastic-agent-system: The system cannot find the file specified."'

```

**Troubleshooting Steps Already Completed:** To isolate the issue, I have already performed the following steps:

1. **EDR Isolation:** Completely disabled Kaspersky EDR to prevent binary locking or quarantining during ZIP extraction and runtime execution.

2. **Clean Wipe & Re-extract:**

3. **Port Conflict Check:** Verified via `netstat -ano` that internal gRPC ports `6789` and `6790` are completely free.

4. **Bypass Flags:** Executed the installation with `install --force --insecure`.