junk files and registry items safe to delete with Ccleaner 7


It is safe to delete your junk files as they are junk. But don’t clean your registry too much. Excessive cleaning of the registry can cause you untold problems. Just to name one, your office products will stop cooperating with you.

When I need to clean the registry, I do it manually through regedit. I handpick the entries to remove.
 

My Computer

System One

  • OS
    Win 7,8.1,10,11, Mint, Kde Plasma, Debian
    Computer type
    Laptop
    Manufacturer/Model
    Dell
    CPU
    Intel(R) Core(TM) i7-6500U CPU @ 2.50GHz
    Memory
    16 GB
    Graphics Card(s)
    Intel(R) HD Graphics 520/Nvidia GeForce 930M
    Sound Card
    Intel(R) Display Audio/RealtekAudio
    Monitor(s) Displays
    Generic Pnp Monitor
    Screen Resolution
    1366 X 768
    Hard Drives
    ST2000LM024-1EJ164
    Keyboard
    Eng (US)
    Mouse
    Sanwa Supply
    Browser
    Firefox
    Antivirus
    Avast One
    Other Info
    Too many laptops with different system specifications.
@glasskuter

I use the pro version.
To stop it from updating to version 6, just block CheckUpdate.dll and CrashReport.dll with your firewall.

1760860538807.webp
 

My Computer

System One

  • OS
    Win 7,8.1,10,11, Mint, Kde Plasma, Debian
    Computer type
    Laptop
    Manufacturer/Model
    Dell
    CPU
    Intel(R) Core(TM) i7-6500U CPU @ 2.50GHz
    Memory
    16 GB
    Graphics Card(s)
    Intel(R) HD Graphics 520/Nvidia GeForce 930M
    Sound Card
    Intel(R) Display Audio/RealtekAudio
    Monitor(s) Displays
    Generic Pnp Monitor
    Screen Resolution
    1366 X 768
    Hard Drives
    ST2000LM024-1EJ164
    Keyboard
    Eng (US)
    Mouse
    Sanwa Supply
    Browser
    Firefox
    Antivirus
    Avast One
    Other Info
    Too many laptops with different system specifications.
When I need to clean the registry, I do it manually through regedit. I handpick the entries to remove.
Man, not me. After 40 years, I don't claim to know enough about Windows darker places to be anything but dangerous. It's a web of lies and deceit. Just like with event viewer, I don't hang around in there much either.
 

My Computers

System One System Two

  • OS
    Windows 11 Pro 25H2
    Computer type
    PC/Desktop
    Manufacturer/Model
    Dell Optiplex 7080
    CPU
    i9-10900 10 core 20 threads
    Motherboard
    DELL 0J37VM
    Memory
    32 gb
    Graphics Card(s)
    none-Intel UHD Graphics 630
    Sound Card
    Integrated Realtek
    Monitor(s) Displays
    Benq 27
    Screen Resolution
    2560x1440
    Hard Drives
    2x1tb Solidigm m.2 nvme /External drives 512gb Samsung m.2 sata+2tb Kingston m2.nvme
    PSU
    500w
    Case
    MT
    Cooling
    Dell Premium
    Keyboard
    Logitech wired
    Mouse
    Logitech wireless
    Internet Speed
    so slow I'm too embarrassed to tell
    Browser
    #1 Edge #2 Firefox
    Antivirus
    Defender+MWB Premium
  • Operating System
    Windows 11 Pro 24H2 26200.8457
    Computer type
    PC/Desktop
    Manufacturer/Model
    Beelink Mini PC SER5
    CPU
    AMD Ryzen 7 6800U
    Memory
    32 gb
    Graphics card(s)
    integrated
    Sound Card
    integrated
    Monitor(s) Displays
    Benq 27
    Screen Resolution
    2560x1440
    Hard Drives
    1TB Crucial nvme
    Keyboard
    Logitech wired
    Mouse
    Logitech wireless
    Internet Speed
    still too embarrassed to tell
    Browser
    Firefox
    Antivirus
    Defender
    Other Info
    System 3 is non compliant Dell 9020 i7-4770/24gb ram Win11 PRO 26200.8457
Man, not me. After 40 years, I don't claim to know enough about Windows darker places to be anything but dangerous. It's a web of lies and deceit. Just like with event viewer, I don't hang around in there much either.
Words of wisdom.
 

My Computer

System One

  • OS
    Win 7,8.1,10,11, Mint, Kde Plasma, Debian
    Computer type
    Laptop
    Manufacturer/Model
    Dell
    CPU
    Intel(R) Core(TM) i7-6500U CPU @ 2.50GHz
    Memory
    16 GB
    Graphics Card(s)
    Intel(R) HD Graphics 520/Nvidia GeForce 930M
    Sound Card
    Intel(R) Display Audio/RealtekAudio
    Monitor(s) Displays
    Generic Pnp Monitor
    Screen Resolution
    1366 X 768
    Hard Drives
    ST2000LM024-1EJ164
    Keyboard
    Eng (US)
    Mouse
    Sanwa Supply
    Browser
    Firefox
    Antivirus
    Avast One
    Other Info
    Too many laptops with different system specifications.
I do have quite a bit of experience with CCleaner over the years, and I did indeed mess up the registry on one occasion. Recently the registry cleaner seems to find few things needing to be cleaned, and unlike @antspants I do find that Revo uninstaller does sometimes leave behind registry entries after cleaning up all the leftovers. I am a cheapskate and no longer pay for CCleaner, which I mainly use for removing unwanted cookies, however, I have found recently that it doesn't actually find all the cookies or remove them any more. (It leaves a zero byte file with the name of the cookie intact). If I carry out a clean up with cookie removal, and then check the cookies in Edge, there are many entries there that didn't even show up in CCleaner. I also find that many of the 'junk files' that disappear on cleaning immediately appear again, because Windows recreates them.
The fact is that you can do a more thorough job, and a more effective job of cleaning up using the built in windows tools than using CCleaner. It is 'easier' though, to use CCleaner.
 

My Computers

System One System Two

  • OS
    Linux Mint (22.3) and Windows 11
    Computer type
    PC/Desktop
    Manufacturer/Model
    Home built
    CPU
    Ryzen 3900x
    Motherboard
    Gigabyte Aorus Master x570 rel 1.0
    Memory
    32GB (2x16) @ 3600 MHz Corsair Vengeance LPX
    Graphics Card(s)
    Asus Geforce RTX 5060 Ti Dual OC 16 GB
    Sound Card
    No separate sound card.
    Monitor(s) Displays
    Dell U2718Q
    Screen Resolution
    3840x2160
    Hard Drives
    1TB WD-Black SN850; 1TB Samsung Sata 850 Evo; 4 TB WD Blue Sata SA510 2.5''; 4TB Samsung Sata SSD 870 EVO 2.5".
    PSU
    Be Quiet Dark Power Pro 11 750W
    Case
    Lian Li PC-8FIB
    Cooling
    CPU: Noctua NH-U12A; Case: BeQuiet + Lian Li fans.
    Keyboard
    Steelseries Apex 7 brown keys.
    Mouse
    Logitech (wired) G403
    Internet Speed
    940 Mb/s down; 105 Mb/s up
    Browser
    Firefox
    Other Info
    Pioneer blu-ray optical drive.
  • Operating System
    Windows 11 Home (ARM version) (latest update)
    Computer type
    Laptop
    Manufacturer/Model
    Samsung Galaxy Book4 Edge 14" Copilot+ PC
    CPU
    Qualcomm Snapdragon X Elite X1E-80-100
    Memory
    16 GB LPDDR5
    Graphics card(s)
    Qualcomm Adreno
    Monitor(s) Displays
    Touch screen 14" AMOLED monitor
    Screen Resolution
    2880x1800
    Hard Drives
    512 GB eUFS
    Internet Speed
    930 Mb/s (Wifi)
    Browser
    Firefox
    Antivirus
    Eset Internet Security
    Other Info
    NPU Qualcomm Hexagon
Wrong - I have seen it bollix up devices many times. I don't get why people say it's good, because it really isn't.
It actually is. Sure, if you use Driver updates it can go bad, but using the cleaning features are fine. . .
 

My Computers

System One System Two

  • OS
    Windows 11 Pro x64 24H2 v26200.5074
    Computer type
    PC/Desktop
    Manufacturer/Model
    Built Myself in 2025
    CPU
    AMD Ryzen 9 3600X 12-Core @ 3.80GHz
    Motherboard
    MSI X570 Gaming Plus
    Memory
    Corsair 32GB DDR4
    Graphics Card(s)
    EVGA GeForce gtx 1660 Super
    Sound Card
    On Board
    Monitor(s) Displays
    2 X AOC 27" , Dell 27"
    Screen Resolution
    1920 X 1080
    Hard Drives
    ~~~~~~~~~~~~~~~~~~~~~~~~~~
    ~ P34A60 512GB NVMe PCIe Gen3x4 M.2
    ~ 6TB Toshiba HDD
    ~ 6TB HDD (Backup)
    ~ SanDisk 250GB SSD
    ~ 2 X 1TB HDD
    ~~~~~~~~~~
    PSU
    eVGA 750w G+
    Case
    GAMDIAS White ATX Mid Tower Gaming Computer PC Case w/Tempered Glass
    Cooling
    AMD Wraith Prism
    Keyboard
    Nulea RT05 Wireless Ergonomic
    Mouse
    Nulea MD280 Wireless Vertical Mouse
    Internet Speed
    761Mbps (Download) / 692Mbps (Upload)
    Browser
    Firefox
    Antivirus
    Malwarebytes
    Other Info
    *This is my Main Computer That I use*
  • Operating System
    Windows 11 Pro x64 24H2 v26100.2894
    Computer type
    PC/Desktop
    CPU
    AMD Ryzen 7 1800X @ 3.60Ghz
    Motherboard
    Asus Crosshair VI Hero
    Memory
    16GB
    Graphics card(s)
    AMD RX580
    Sound Card
    onBoard
    Monitor(s) Displays
    LG 27UK650-W 27", eMachine 22"
    Screen Resolution
    1920 X 1080
    Hard Drives
    250GB SSD
    PSU
    CORSAIR RM850
    Case
    GAMDIAS Black ATX Mid Tower Gaming Computer PC Case w/Tempered Glass
    Cooling
    Liquid
    Keyboard
    Nulea RT05 Wireless Ergonomic
    Mouse
    Nulea MD280 Wireless Vertical Mouse
    Internet Speed
    752Mbps (Download) / 537Mbps (Upload)
    Browser
    Firefox
    Antivirus
    Malwarebytes
    Other Info
    I use this computer for photo/video editing and to track severe weather
After watching many systems that needed to be completely reinstalled (including several of my own) after running CCleaner, the only advice that I can give to anyone wanting to use it is to not walk, but run far away from it.

If you feel you must do a registry clean, you're on your own as that is something I never do to my own system.

What I do however is run a program like Bulk Crap Uninstaller on clean system or GEEK Uninstaller or Revo Uninstaller to remove all traces of unneeded/unwanted applications.

When I need to clean out junk files, windows log files, and such I turn to DiskMax. It does a good enough job for me and I've never had a system unable to boot before from using it.
 

My Computer

System One

  • OS
    Windows 11 Pro 25H2 (26200.8457)
    Computer type
    PC/Desktop
    Manufacturer/Model
    Pre-built
    CPU
    AMD Ryzen 7 7800X3D
    Motherboard
    MSI Pro B650-VC WiFi
    Memory
    32gb Team Group (T-Force) DDR5-6000
    Graphics Card(s)
    Zotac nVidia GeForce RTX 4070 SUPER - 12gb
    Sound Card
    Sound BlasterX G6
    Monitor(s) Displays
    Koorui G2421V and ViewSonic VX2453
    Screen Resolution
    P:2560x1440 S:1920x1080
    Hard Drives
    WD Blue SN5000 - 500gb NVME
    WD Blue SN580 - 2TB NVME
    Seagate 4TB HDD - ST4000VN008-2DR166
    Keyboard
    Mountain Everest
    Mouse
    Logitech G502 Hero
    Internet Speed
    T-Mobile Home Internet
    Browser
    Firefox
    Other Info
    QNAP TS-469 Pro NAS
    TP-Link W7200 (2 unit mesh network)
    Elgato Streamdeck

My Computers

System One System Two

  • OS
    Windows 11 Pro 25H2 Build 26200.8524
    Computer type
    PC/Desktop
    Manufacturer/Model
    Sin-built 2013
    CPU
    Intel(R) Core(TM) i7-4770K CPU @ 3.50GHz
    Motherboard
    ASUS ROG Maximus VI Formula
    Memory
    32.0 GB of I forget and the box is in storage.
    Graphics Card(s)
    Gigabyte nVidia GeForce GTX 1660 Super OC 6GB
    Sound Card
    Onboard thingy
    Monitor(s) Displays
    5 x LG 25MS500-B - 1 x 24MK430H-B - 1 x Wacom Pro 22" Touch Screen Tablet
    Screen Resolution
    All over the place
    Hard Drives
    Too many to list.
    OS on Samsung 1TB 870 QVO SATA
    PSU
    Silverstone 1500
    Case
    NZXT Phantom 820 Full-Tower Case
    Cooling
    Noctua NH-D15 Elite Class Dual Tower CPU Cooler / 6 x EziDIY 120mm / 2 x Corsair 140mm somethings / 1 x 140mm Thermaltake something / 2 x 200mm Corsair.
    Keyboard
    Corsair K95 / Logitech diNovo Edge Wireless
    Mouse
    Logitech: G402 / G502 / Mx Masters / Mx Air Cordless
    Internet Speed
    2000/500Mbps
    Browser
    All sorts
    Antivirus
    Kaspersky Premium
    Other Info
    ㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
    TP-Link BE9300 WiFi 7 Bluetooth 5.4 (Archer TBE550E)
    TP-Link TX201 V1 2.5GB Lan

    Grandstream HT812 - VoIP
    ASUS DSL-AX82U - Mesh
    ASUS RT-AC68U - Mesh
    ASUS RT-BE88U Router

    Brother MFC-L2880DW Printer

    I’m on a horse.
  • Operating System
    Windows 11 Pro 25H2 Build 26200.8524
    Computer type
    Laptop
    Manufacturer/Model
    LENOVO Yoga 7 14IRL8 - 7i EVO OLED 14" Touchscreen i5 12 Core 16GB/512GB
    CPU
    Intel Core 12th Gen i5-1240P Processor (1.7 - 4.4GHz)
    Memory
    16GB LPDDR5 RAM
    Graphics card(s)
    Intel Iris Xe Graphics Processor
    Sound Card
    Optimized with Dolby Atmos®
    Screen Resolution
    QHD 2880 x 1800 OLED
    Hard Drives
    M.2 512GB
    Antivirus
    Defender / Malwarebytes
    Other Info
    …still on a horse.
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