FIX: CCleaner error when opening files for writing

Elsie Otachi By: Elsie Otachi
2 minute read
ccleaner error opening file for writing

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When you want to clean up or optimize your computer for better performance, there are many tools available that can help you do the job, and well at that.

One of these tools is CCleaner, arguably one of the world’s most popular ones that clears out temporary files, cleans your Registry, and erases browser history among many other tasks.

CCleaner is also compatible with Windows operating system, and has a great user interface, support for Chrome and Internet Explorer, plus added support for programs like Bittorrent, AVG antivirus, Audacity and others.

In short, it is the ultimate tool for cleaning your system, but you still have to make a full system backup and create a new system restore point prior to using it.

Like any other software, CCleaner also has troubleshooting issues that bring up errors in its installation and usage, like the CCleaner error opening file for writing.

This error is associated with installation problems when using the tool, if you’re trying to install it without being logged in as administrator.

Check out the known solutions to resolve the CCleaner error opening file for writing.

FIX: CCleaner error opening file for writing

  1. Retry running the installer
  2. Log in as administrator
  3. Use CCleaner Portable

Solution 1: Retry running the installer

If you run the installer, you may get a dialog box when a previous version of CCleaner is running. In this case, wait for a few seconds and click Retry. If this doesn’t get it back up and running again, try the next solution.


For various PC problems, we recommend this tool.

This software will repair common computer errors, protect you from file loss, malware, hardware failure and optimize your PC for maximum performance. Fix PC issues now in 3 easy steps:

  1. Download this PC Repair Tool rated "Excellent" on TrustPilot.com.
  2. Click “Start Scan” to find Windows issues that could be causing PC problems.
  3. Click “Repair All” to fix all issues with Patented Technologies (requires upgrade).

Solution 2: Log in as administrator

As mentioned earlier, the CCleaner error opening file for writing may be caused when you try to run CCleaner without being logged in as an admin. In this case, you can log in as admin and run it, or contact your system admin for help with this.

If you were able to log in as administrator and this worked, you can carry on using CCleaner on your system, if not, try the next solution.

Solution 3: Use CCleaner Portable

CCleaner Portable is the perfect tool when you need to clean your system on the go, or want to carry it elsewhere to do a cleanup on another computer system. This version lets you carry it in your USB flash drive and use it anywhere, though it may have limited functionality if you’re not using an administrator account.  Once installed, you can run CCleaner without logging in as an admin, but it may not clean certain files and folders.

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For various PC problems, we recommend this tool.

This software will repair common computer errors, protect you from file loss, malware, hardware failure and optimize your PC for maximum performance. Fix PC issues now in 3 easy steps:

  1. Download this PC Repair Tool rated "Excellent" on TrustPilot.com.
  2. Click “Start Scan” to find Windows issues that could be causing PC problems.
  3. Click “Repair All” to fix all issues with Patented Technologies (requires upgrade).

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