1 hour ago, MereFouras said:
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I have the same problem <span>:</span>
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<span>- running portable from an USB key, which I have been doing for years with no problem</span>
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<span>- no ccleaner window opens</span>
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<span>- systemexplorer shows a Ccleaner64.exe process running ( and as many such processes as I tried to lauch Ccleaner...</span>
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Hi MereFouras:
Have you recently changed the location where your CCleaner files are located? For example, have you unzipped your CCleaner files in a different folder than you usually do, or have you started using a different removable USB stick?
Try the following to troubleshoot your problem.
Unplug your removable USB stick, open Task Manager, and make sure that you right-click on each instance of your CCleaner64.exe executable and choose End Task to make sure that CCleaner is no longer loaded in memory.
Next, plug in your removable USB stick and see what drive letter your computer automatically assigns (e.g., D:\, E:\. etc.). Disk Management (Start | Windows Administrative Tools | Computer Management | Storage) shows the USB stick I use to run CCleaner Portable is always recognized as E:\ drive.
Then open a Run dialog box (Windows key + R) and enter regedit to open your Windows registry. Browse to Computer\HKEY_LOCAL_MACHINE\SOFTWARE\Piriform\CCleaner and make sure the drive letter and location of your current CCleaner64.exe executable matches the path in registry values for DataFolder and ProgramFolder. Note that my CCleaner Portable files are currently located in a folder I created on my removable USB stick at E:\Portable\CCleaner.
If the path in your registry is correct then try launching CCleaner64.exe from your removable USB stick again and see if your CCleaner interface opens correctly.
I ran into a similar problem as you last week because I copied all my portable apps (including CCleaner) from an 8 GB USB 2.0 stick to a faster 16 GB USB 3.0 stick. All my other portable apps ran correctly, but CCleaner would not launch from the new USB 3.0 stick even though I could see CCleaner64.exe running in Task Manager and consuming high amounts of CPU and memory. I eventually realized that the problem occurred because the new USB 3.0 stick was assigned the drive letter D:\ when it was plugged in and my CCleaner program was now in D:\Portable\CCleaner, which did not match the expected location in my registry of E:\Portable\CCleaner. This is one of the many problems that can occur when a portable app like CCleaner creates registry entries instead of storing all necessary data in the local ccleaner.ini file (see my 21-Jul-2023 post about this in Wisewiz's Welcome back to CCleaner Professional ???).
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Just an aside , but your Windows 10 OS is currently at Build 19045.3393, which is the KB5029331 (OS Build 19045.3393) Preview released on 23-Aug-2023. Is there any specific reason why you are installing optional Preview builds for your Windows OS? These preview builds are beta versions released for early testing that could include bugs, and I generally avoid installing any Preview builds on my system.
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<span style="font-size:11px;">Dell Inspiron 15 5584 * 64-bit Win 10 Pro v22H2 build 19045.3324 * Firefox v117.0.0 * Microsoft Defender v4.18.23080.2006-1.1.23080.2005 * Malwarebytes Premium v4.6.1.280-1.0.2117 * Macrium Reflect Free v8.0.7279 * CCleaner Free Portable v6.15.10623</span>