# CompatTelRunner.exe

Windows Process: Microsoft Corporation

Catalog search terms compattelrunner, compatibility telemetry, microsoft compatibility telemetry

Windows, System Component

Compatibility Telemetry runner. Scheduled tasks dey start am to collect compatibility data wey Microsoft dey use for upgrades and problem reports.

## Wetin you need know

Dis na Compatibility Telemetry, scheduled Microsoft task. E no be Defender and e no be browser.

CompatTelRunner.exe dey run Microsoft Compatibility Telemetry. High disk for some time after upgrade dey common. To disable di scheduled task na di supported control, no be to delete System32.

- **E safe?**: Check the running file path, signature, and publisher. Name alone no fit confirm say e safe.

  **High disk?**: Compat scan fit do dat one

  **I fit disable am?**: Through di task, no be by deleting di file

Feex tok say

If CompatTelRunner na di disk hog after feature update, I go allow di task finish once. I no go rename di exe. Na so servicing repairs dey start to fail.

## Wetin be CompatTelRunner.exe?

CompatTelRunner.exe na di host for Microsoft Compatibility Telemetry. Task Scheduler dey launch am from Microsoft / Windows / Application Experience.

## Wetin e dey do?

E dey take inventory of apps and drivers wey fit break on top newer Windows. CompatTelRunner no dey collect passwords. E no be SearchIndexer.exe.

## Wetin make am dey run?

Daily or idle trigger fire, or you just install feature update. Runner wey never commot for days don stuck and e make sense to restart di task.

## Inspect the running instance

Inside Windows PowerShell, this read-only query show matching process IDs, creation times and executable paths on this PC. (pcm)

`Get-CimInstance -ClassName Win32_Process | Where-Object { $_.Name -eq 'CompatTelRunner.exe' } | Select-Object ProcessId, ParentProcessId, CreationDate, Name, ExecutablePath | Format-List`

No result or a path we no fit access is inconclusive. Protected processes fit restrict access, and process IDs fit be reused. Keep personal paths local. (pcm)

Use the [file-identity guide](https://feex.it/wiki/l/pcm/software/system/verify-executable-path-signature/) to compare signatures and product metadata. A filename alone no fit establish safety. (pcm)

## E dey safe?

Check dis running file

System32 CompatTelRunner na Microsoft. Di same filename inside "disable telemetry" zip no be am.

Compare the recorded location with the actual file. A familiar folder alone no fit establish identity. (pcm)

`C:\Windows\System32\CompatTelRunner.exe`

- Application Experience tasks dey start am
- No be Windows Search
- No be Defender

## I fit end am?

E dey stop dis run

To end CompatTelRunner.exe dey stop di current inventory. Di task go start again on di next trigger unless you disable dat task.

## I fit comot am?

No

No delete CompatTelRunner.exe. Disable Microsoft Compatibility Appraiser inside Task Scheduler if you accept less upgrade-readiness data.

## E suppose start with Windows?

Scheduled task dey start am. E no suppose be Startup Apps row.

## Measure resource use

| CPU and memory   | Compare several observations for the same PID and workload. This entry get no independently measured universal baseline. (pcm)               |
| ---------------- | -------------------------------------------------------------------------------------------------------------------------------------------- |
| Disk and network | Attribute activity to the actual process and current task; a filename alone no fit establish expected destinations or transfer volume. (pcm) |

## File information

| Executable name            | CompatTelRunner.exe                                                                |
| -------------------------- | ---------------------------------------------------------------------------------- |
| Recorded installation path | C:\Windows\System32\CompatTelRunner.exe                                            |
| Publisher                  | Microsoft Corporation                                                              |
| Signature check            | Inspect the actual file; this entry no dey certify its certificate identity. (pcm) |

## Common wahala dem

### 100 percent disk for one hour

On top spinning disk di Appraiser dey slow. Wait, den check Task Scheduler history. SearchIndexer na different row if di disk still dey busy.

### Scripts wey dey take ownership of di file

Dem dey break servicing. Use di task, no be ACLs.

## How to troubleshoot

Diagnose before you change anything wey fit scatter things.

### Task Scheduler > Application Experience

Microsoft Compatibility Appraiser na di usual name.

### No replace di runner

Windows Update go fight you.

## Technical details

Technical details

| Image name | CompatTelRunner.exe            |
| ---------- | ------------------------------ |
| Role       | Compatibility Telemetry runner |

## Check the identity of running file

A filename alone no fit establish safety. Verify the actual path, signature and product identity. (pcm)

## Related

Dis entities connect to dis article. Type dey show for every link.

[taskhostw.exe: Windows Process](https://feex.it/wiki/l/pcm/process/taskhostw.exe/)[Task Scheduler: Windows Service](https://feex.it/wiki/l/pcm/service/task-scheduler/)[Wen high CPU dey normal: Guide](https://feex.it/wiki/l/pcm/software/system/when-high-cpu-is-normal/)[Check an executable path and digital signature: Guide](https://feex.it/wiki/l/pcm/software/system/verify-executable-path-signature/)[Read Task Manager and compare process activity: Guide](https://feex.it/wiki/l/pcm/software/system/how-to-read-task-manager/)[Windows processes: Category](https://feex.it/wiki/process/windows/)

## Sources and verification

Recorded source label: August 2026. Dis label no establish independent verification. [How we dey do research](https://feex.it/wiki/research/).

- [Microsoft Support: Compatibility Telemetry ](https://support.microsoft.com/windows/windows-diagnostic-data)· Diagnostic tasks
- [Microsoft Learn: Task Scheduler ](https://learn.microsoft.com/windows/win32/taskschd/task-scheduler-start-page)· Microsoft Compatibility Appraiser task
- [Foxhole process map ](https://foxhole.feex.it/)· First-party samples on top Windows PCs. No be lab benchmark.
- [Microsoft Sysinternals: Sigcheck ](https://learn.microsoft.com/en-us/sysinternals/downloads/sigcheck)· Dey explain how to check file signatures. Dis reference no establish the identity or safety of any particular running file.
- [Microsoft: Get-CimInstance ](https://learn.microsoft.com/en-us/powershell/module/cimcmdlets/get-ciminstance)· Read-only local process-query method. (pcm)
- [Microsoft: Win32_Process properties ](https://learn.microsoft.com/en-us/windows/win32/cimwin32prov/win32-process)· Documents process IDs, executable paths, creation dates and parent-ID reuse. (pcm)

## Dis article make sense to you?

Yes or no dey enough. Choose reason if you want, or add short note.

Quick facts

The short identity of dis page. Specs, sources, and the full story still dey inside the article.

- **Type**: Windows Process

  **Publisher**: Microsoft Corporation

  **Executable**: CompatTelRunner.exe

  **Typical path**: C:\Windows\System32\CompatTelRunner.exe

  **Record context**: Feex Wiki reference entry

Recorded source status: Feex Reviewed: Recorded source label: August 2026. Dis label no establish independent verification.

---

Source: [Canonical Feex Wiki page](https://feex.it/wiki/l/pcm/process/compattelrunner.exe/)

[Developer guide](https://feex.it/wiki/developers/) | [API policy](https://feex.it/developers/api-policy/) | [Agent guidance](https://feex.it/wiki/llms.txt)