ccleaner64.exe

What is ccleaner64.exe?

ccleaner-service is the Windows background component of CCleaner that executes cleaning, privacy, and optimization tasks without opening the main UI. It handles scheduled maintenance, temporary file removal, cache purging, and basic registry checks to keep system clutter in check. Running with restricted privileges, it starts with the user session or at boot based on configuration.

The service runs as a Windows service (ccleaner64.exe) and coordinates automated cleaning by invoking CCleaner modules; it monitors scheduled jobs, applies maintenance profiles, and reports results to the UI when user action is needed.

Is ccleaner-service Safe?

ccleaner-service is a legitimate background component of the CCleaner product from Piriform (now part of Avast). It is digitally signed, uses a minimal privilege service model, and operates only within configured CCleaner maintenance tasks. When CCleaner is installed from official sources and kept up to date, the service runs in a limited, predictable scope, reducing the risk of system disruption while enabling automated cleanup.

Is ccleaner-service a Virus?

While CCleaner software is legitimate, any binary can be tampered if downloaded from untrusted sources. ccleaner-service is not a virus when obtained from Piriform. To stay safe, verify the digital signature, ensure the executable path matches the official install location, and keep the software updated. If you suspect tampering, run a full malware scan and compare file hashes with Piriform’s published values.

How to Verify Legitimacy

1. Check File Location: Verify the executable resides under C:\Program Files\CCleaner and is named ccleaner64.exe.
2. Verify Digital Signature: Open file properties or use Get-AuthenticodeSignature to confirm a valid Piriform signature.
3. Check File Hash: Compute sha256 hash using Get-FileHash and compare with Piriform's official hash list.
4. Scan for Malware: Run a malware scan with Windows Defender or a reputable security tool to detect any tampering.

Why is it Running?

Reasons it's running:

• Automated cleanup scheduling: ccleaner-service enables pre-configured cleanup tasks to run at set times so temporary files, caches, and browser traces are purged without manual intervention.
• Privacy maintenance: The service performs privacy-related cleaning to minimize traces left by browsers and applications, helping reduce data leakage and improve privacy.
• Performance optimization: By removing unused files and freeing disk space, the service helps maintain system responsiveness and frees up storage resources.
• Update-driven stability: CCleaner uses the service to apply maintenance routines after updates, ensuring consistent behavior across reboots.
• Background monitoring: It monitors CCleaner's scheduled tasks and user configurations so cleaning happens in accordance with preferences.

Can I Disable or Remove It?

Common Problems

Common Causes & Solutions

• : Check CCleaner Task Scheduler, adjust cleanup frequency, and ensure there are no conflicting cleanup plugins.
• : Verify startup type, permissions, and that the executable path is correct; reinstall CCleaner if necessary.
• : Restore defaults from CCleaner settings and re-import user profiles; ensure the update completed successfully.
• : Configure CCleaner to run in idle time or reduce the background load level in Advanced settings.
• : Run system file checker (sfc /scannow) and reinstall CCleaner from official source.
• : Whitelist the CCleaner path in your antivirus or perform a signature-based verification against Piriform's site.

Related Processes