How To Fix CCleaner Error Code 91613?

CCleaner is a popular system optimization and privacy tool used by millions of people worldwide. It helps clean up unnecessary files and invalid registry entries to free up disk space and improve computer performance.

How To Fix CCleaner Error Code 91613?However, at times users may encounter error codes while using CCleaner. One common error code is CCleaner Error Code 91613. This error typically appears while scanning the registry or cleaning files on your system.

If you have encountered CCleaner Error Code 91613, this guide will help you troubleshoot and resolve the problem quickly.

What Causes the CCleaner Error Code 91613

The CCleaner error code 91613 occurs due to a conflict between CCleaner’s cleaning engine and certain software programs or system files on your computer.

Some common causes for CCleaner error code 91613 include:

  • Incompatible or Corrupted System Files: Error code 91613 can appear if some Windows system files like dll, exe or sys files are corrupted or incompatible with CCleaner.
  • Antivirus Interference: Sometimes your antivirus software may identify CCleaner scans as suspicious activity and block its cleaning functions. This leads to error code 91613.
  • Insufficient User Access Privileges: You may encounter this error code if CCleaner does not have the required access permissions to scan certain protected folders or registry entries.
  • Outdated CCleaner Software: Using an outdated version of CCleaner that is not compatible with newer versions of Windows can also trigger this error.

So in most cases, CCleaner error code 91613 occurs due to conflicts with other software or insufficient access privileges rather than an issue with CCleaner itself.

5 Ways to Fix CCleaner Error Code 91613

Fixing CCleaner error code 91613 is relatively simple in most cases. Here are 5 troubleshooting methods you can try to resolve error code 91613:

1. Run CCleaner as Administrator

The easiest method is to run CCleaner as administrator. This grants full system access to CCleaner and prevents permission errors.

To run CCleaner as admin:

  • Close CCleaner program if it is running.
  • Right-click the CCleaner app icon on desktop and choose Run as administrator.
  • Try running the scan or cleaning function again and check if error 91613 appears.

2. Add Exceptions in Antivirus

As mentioned before, sometimes your antivirus can block CCleaner causing error 91613.

You can fix this by adding exceptions for CCleaner in your antivirus program. The steps would vary depending on the antivirus you use, but typically you need to:

  • Open antivirus settings
  • Navigate to quarantined items or blocked programs
  • Find CCleaner on the list and mark it as allowed/trusted
  • Save changes and retry running CCleaner

This white-lists CCleaner in your antivirus and prevents interference.

3. Update Windows and CCleaner Software

An outdated Windows OS or CCleaner software can also lead to error 91613 in some situations.

It is good practice to keep your software updated to avail bug fixes and compatibility changes.

  • For Windows, install the latest OS updates using Windows Update.
  • For CCleaner, visit Settings  About to check for updates. Download and install the latest CCleaner version if available.

Updating Windows and CCleaner may resolve file conflicts or incompatibility issues causing the error.

4. Run SFC and DISM System File Checker

System File Checker (SFC) and Deployment Image Servicing and Management (DISM) tools can help fix corrupted system files which cause error 91613.

To use SFC and DISM:

  • Type cmd in Windows search bar
  • Right click Command Prompt and Run as Administrator
  • Run the command
  • Copy code
  • sfc /scannow
  • Once scan completes run:
  • Copy code
    • DISM /Online /Cleanup-Image /Restore Health
  • Restart your PC after the commands complete
  • The system file checker will repair corrupt OS files replacing them with a cached copy which may resolve CCleaner errors.

5. Uninstall Conflicting Software

If the above solutions do not work, try to identify if any third party software is interfering with CCleaner.

Common culprits include:

  • Optimization tools like Wise Disk Cleaner, BleachBit etc.
  • Some firewall or security software blocking CCleaner
  • CD/DVD burning software

Try uninstalling such software and check if it resolves CCleaner error code 91613. You can always reinstall them later.

Also, ensure no other system optimization software runs scans when you run CCleaner scans to prevent conflicts.

Preventing CCleaner Error Code 91613

Here are some best practices you should follow to avoid encountering CCleaner error 91613 again in future:

  • Update Windows and CCleaner regularly to avoid version conflicts
  • Exclude CCleaner scanning of critical system files/folders
  • Add exceptions for CCleaner in antivirus before running scans
  • Avoid using multiple optimization tools simultaneously
  • Always run CCleaner as administrator to prevent permission issues
  • Take regular backups of registry before making changes with CCleaner

Following these simple practices will help prevent error 91613 and also avoid potential damage from improper cleaning of sensitive system components.


CCleaner error code 91613 generally occurs due to conflicts with other software or insufficient access rights.

By troubleshooting the potential causes, adding exceptions in antivirus, running SFC / DISM scans, or updating Windows and CCleaner – you should be able to troubleshoot and fix CCleaner error code 91613 easily.

Always exercise caution while allowing any third party software access to protected system files and folders.


  1. Why does CCleaner error 91613 occur?
    Error 91613 occurs mainly due to conflicts with other software like antivirus, lack of access permissions or corrupted system files.

  2. How can I allow CCleaner through my antivirus?
    Open antivirus settings, go to the quarantine/blocked items section, find CCleaner and mark it as a permitted/trusted program.

  3. What commands can repair system file errors?
    Running SFC /scannow and DISM /Online /Cleanup-Image /Restore Health commands can help replace corrupt system files and resolve such errors.

  4. Is it safe to exclude system folders from CCleaner scans?
    Yes, you can safely add exceptions for sensitive Windows folders in CCleaner settings to prevent access conflicts.

  5. Why does running CCleaner as administrator fix some errors?
    Administrator access allows CCleaner elevated permissions needed to access protected system files which prevents permission errors.

  6. Should I upgrade to the latest version of CCleaner?
    Yes, updating to the latest CCleaner version can help fix software bugs and improve compatibility with new Windows updates.

  7. Can multiple PC optimization tools cause conflicts?
    Yes, running scans of multiple system tune up utilities simultaneously can often cause software conflicts leading to errors.

  8. Is it normal for antivirus to block CCleaner?
    Sometimes antivirus can detect registry and system changes by CCleaner as suspicious activity and block it triggering errors.

  9. Are Windows updates important to install?
    Yes, Windows updates contain vital bug fixes, security patches and compatibility changes that can prevent many software errors.

  10. Where are CCleaner backup files stored?
    CCleaner by default stores backups at
    C:\Program Files\CCleaner\Backup. You can restore from here if any issues occur.

  11. Can I recover my registry if damaged by CCleaner?
    Yes, if you set up registry backup in CCleaner you can restore it to repair any damage caused during cleaning.

  12. Is CCleaner fully compatible with Windows 11?
    Yes, the latest version of CCleaner is fully compatible with Windows 11 and fixes issues faced on older Windows versions.

  13. Can cleaning registry cause problems?
    Yes, cleaning the registry without caution can sometimes remove vital entries causing system instability or failure to start.

  14. How often should I run CCleaner scans?
    Running quick CCleaner scans weekly and deep registry scans monthly is generally considered safe for regular PC maintenance.

  15. Does DISM command repair system files?
    Yes, DISM scans Windows image files and can restore corrupted system files to their original state fixing many errors.

  16. Is it safe to use the CCleaner drive wiper tool?
    CCleaner drive wipe is safe when used with caution to permanently delete sensitive files and prevent recovery.

  17. Why does sfc /scannow fail to fix some errors?
    sfc /scannow uses cached system files which may also be corrupted causing the command to fail in some cases.

  18. Can outdated drivers cause conflicts with CCleaner?
    Yes, older incompatible device drivers can trigger access violations when CCleaner scans related system entries.

  19. How can I prevent CCleaner damaging the registry?
    Avoid cleaning unknown registry keys, take backups before scans and exclude critical system hives to prevent potential damage.

  20. Why are Windows updates released so frequently?
    Frequent Windows updates are required to fix newly discovered security vulnerabilities and ensure compatibility with new hardware.


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