Keep getting mysterious CRL folder under C:\


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Krakkan

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12:44 AM
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OS
Windows 11 Pro
C:\CRL
I think it has to do with expired certificates? I keep getting this folder even on brand new windows installs.
It fills up with about 10-15 .crl files.
If removed it just keeps coming back.
Have i been hacked? Is it normal? Can it have something to do with my browser?
Google does not help me with this sadly!
 

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Windows 11 Pro3700x32GB Corsair 3200XFX Speedster MerC310 7900XTX
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Windows 11 Pro
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32GB Corsair 3200
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I don't have a single *.crl on my laptop. Like you, I can't find out anything on Google.

Are you running some server?
 

My Computers My Computers

System One System Two

  • At a glance

    Windows 11 Pro 25H2 26200.8655AMD Ryzen 7 5825U with Radeon Graphics16GB
    OS
    Windows 11 Pro 25H2 26200.8655
    Computer type
    Laptop
    Manufacturer/Model
    Acemagic LX15PRO
    CPU
    AMD Ryzen 7 5825U with Radeon Graphics
    Memory
    16GB
    Screen Resolution
    1920 x 1080
    Hard Drives
    SSD 2TB
    Internet Speed
    30 Mbps
    Browser
    Brave
    Antivirus
    Webroot Secure Anywhere
    Other Info
    System 3

    Acer Swift SF114-34 laptop
    OS Windows 11 Pro 26200.8524
    CPU Pentium Silver N6000
    RAM 4GB
    SSD Samsung 970 EVO Plus SSD 2TB (an upgrade)

  • At a glance

    Windows 11 Pro 23H2 22631.2506Atom N450 1.66GHz2GB
    Operating System
    Windows 11 Pro 23H2 22631.2506
    Computer type
    Laptop
    Manufacturer/Model
    HP Mini 210-1090NR PC (bought in late 2009!)
    CPU
    Atom N450 1.66GHz
    Memory
    2GB
    Browser
    Brave
    Antivirus
    Webroot
kelper said:
I don't have a single *.crl on my laptop. Like you, I can't find out anything on Google.

Are you running some server?
Click to expand...
No, completely clean install. It took a couple of hours before the CRL folder popped up and now there is 3 *.crl files in there but with some more time more will come as always.
Installed latest Windows 11 Pro clean from USB, done several times but CRL folder always show up no matter what i do.
Installed Steam, Battlenet, GOG. And Firefox that's all i did basically.
edit: It takes awhile before CRL folder is there, it's not there right after install so something happens after a couple of hours creating the folder.
 

My Computer My Computer

At a glance

Windows 11 Pro3700x32GB Corsair 3200XFX Speedster MerC310 7900XTX
OS
Windows 11 Pro
Computer type
PC/Desktop
CPU
3700x
Motherboard
ASRock X570 Taichi
Memory
32GB Corsair 3200
Graphics Card(s)
XFX Speedster MerC310 7900XTX
Monitor(s) Displays
Philips 50PUS8536/12
Screen Resolution
4K60 HDR
Hard Drives
3xNVMe 1xSSD 1xMechanical
PSU
Corsair RM1000x
Case
Fractal Design R5
Cooling
Corsair H115i Pro
Keyboard
Svive Triton TKL Black brown switches
Mouse
Corsair Katar PRO XT
Internet Speed
600Mbit/200Mbit
A Certificate Revocation List (CRL) is a digital record maintained by a Certificate Authority (CA) that contains an inventory of revoked digital certificates. A digital certificate is a cryptographic mechanism used to verify the identity of a communicating party over a network.
 

My Computer My Computer

At a glance

Windows 11AMD Ryzen 7 5700GMicron Technology DDR4-3200 16GBNVIDIA GeForce RTX 3060
OS
Windows 11
Computer type
PC/Desktop
Manufacturer/Model
HP Pavilion
CPU
AMD Ryzen 7 5700G
Motherboard
Erica6
Memory
Micron Technology DDR4-3200 16GB
Graphics Card(s)
NVIDIA GeForce RTX 3060
Sound Card
Realtek ALC671
Monitor(s) Displays
Samsung SyncMaster U28E590
Screen Resolution
3840 x 2160
Hard Drives
SAMSUNG MZVLQ1T0HALB-000H1
FreeBooter said:
A Certificate Revocation List (CRL) is a digital record maintained by a Certificate Authority (CA) that contains an inventory of revoked digital certificates. A digital certificate is a cryptographic mechanism used to verify the identity of a communicating party over a network.
Click to expand...
But that still doesn't explain why *.crl files keep appearing on his computer
 

My Computers My Computers

System One System Two

  • At a glance

    Windows 11 Pro 25H2 26200.8655AMD Ryzen 7 5825U with Radeon Graphics16GB
    OS
    Windows 11 Pro 25H2 26200.8655
    Computer type
    Laptop
    Manufacturer/Model
    Acemagic LX15PRO
    CPU
    AMD Ryzen 7 5825U with Radeon Graphics
    Memory
    16GB
    Screen Resolution
    1920 x 1080
    Hard Drives
    SSD 2TB
    Internet Speed
    30 Mbps
    Browser
    Brave
    Antivirus
    Webroot Secure Anywhere
    Other Info
    System 3

    Acer Swift SF114-34 laptop
    OS Windows 11 Pro 26200.8524
    CPU Pentium Silver N6000
    RAM 4GB
    SSD Samsung 970 EVO Plus SSD 2TB (an upgrade)

  • At a glance

    Windows 11 Pro 23H2 22631.2506Atom N450 1.66GHz2GB
    Operating System
    Windows 11 Pro 23H2 22631.2506
    Computer type
    Laptop
    Manufacturer/Model
    HP Mini 210-1090NR PC (bought in late 2009!)
    CPU
    Atom N450 1.66GHz
    Memory
    2GB
    Browser
    Brave
    Antivirus
    Webroot
kelper said:
But that still doesn't explain why *.crl files keep appearing on his computer
Click to expand...
It is created by application installed Windows 11 does not create this file.
 

My Computer My Computer

At a glance

Windows 11AMD Ryzen 7 5700GMicron Technology DDR4-3200 16GBNVIDIA GeForce RTX 3060
OS
Windows 11
Computer type
PC/Desktop
Manufacturer/Model
HP Pavilion
CPU
AMD Ryzen 7 5700G
Motherboard
Erica6
Memory
Micron Technology DDR4-3200 16GB
Graphics Card(s)
NVIDIA GeForce RTX 3060
Sound Card
Realtek ALC671
Monitor(s) Displays
Samsung SyncMaster U28E590
Screen Resolution
3840 x 2160
Hard Drives
SAMSUNG MZVLQ1T0HALB-000H1
FreeBooter said:
A Certificate Revocation List (CRL) is a digital record maintained by a Certificate Authority (CA) that contains an inventory of revoked digital certificates. A digital certificate is a cryptographic mechanism used to verify the identity of a communicating party over a network.
Click to expand...
So it seems most likely then it comes from Firefox?
FreeBooter said:
It is created by application installed Windows 11 does not create this file.
Click to expand...
So most likely my Firefox? I mean i got steam and some other normal apps too
FreeBooter said:
It is created by application installed Windows 11 does not create this file.
Click to expand...
Then it is most likely Firefox? I mean it's got certificates in the settings, so maybe it's dumping old invalid ones to my C:\CRL folder?
Or maybe it's hacked and removing encryption or some weird stuff :S It's a mystery, don't know if i should be worried or not.
 

My Computer My Computer

At a glance

Windows 11 Pro3700x32GB Corsair 3200XFX Speedster MerC310 7900XTX
OS
Windows 11 Pro
Computer type
PC/Desktop
CPU
3700x
Motherboard
ASRock X570 Taichi
Memory
32GB Corsair 3200
Graphics Card(s)
XFX Speedster MerC310 7900XTX
Monitor(s) Displays
Philips 50PUS8536/12
Screen Resolution
4K60 HDR
Hard Drives
3xNVMe 1xSSD 1xMechanical
PSU
Corsair RM1000x
Case
Fractal Design R5
Cooling
Corsair H115i Pro
Keyboard
Svive Triton TKL Black brown switches
Mouse
Corsair Katar PRO XT
Internet Speed
600Mbit/200Mbit
Do a clean install and don't add any programs. See what happens.
 

My Computers My Computers

System One System Two

  • At a glance

    Windows 11 Pro 25H2 26200.8655AMD Ryzen 7 5825U with Radeon Graphics16GB
    OS
    Windows 11 Pro 25H2 26200.8655
    Computer type
    Laptop
    Manufacturer/Model
    Acemagic LX15PRO
    CPU
    AMD Ryzen 7 5825U with Radeon Graphics
    Memory
    16GB
    Screen Resolution
    1920 x 1080
    Hard Drives
    SSD 2TB
    Internet Speed
    30 Mbps
    Browser
    Brave
    Antivirus
    Webroot Secure Anywhere
    Other Info
    System 3

    Acer Swift SF114-34 laptop
    OS Windows 11 Pro 26200.8524
    CPU Pentium Silver N6000
    RAM 4GB
    SSD Samsung 970 EVO Plus SSD 2TB (an upgrade)

  • At a glance

    Windows 11 Pro 23H2 22631.2506Atom N450 1.66GHz2GB
    Operating System
    Windows 11 Pro 23H2 22631.2506
    Computer type
    Laptop
    Manufacturer/Model
    HP Mini 210-1090NR PC (bought in late 2009!)
    CPU
    Atom N450 1.66GHz
    Memory
    2GB
    Browser
    Brave
    Antivirus
    Webroot
Krakkan said:
So it seems most likely then it comes from Firefox?

So most likely my Firefox? I mean i got steam and some other normal apps too

Then it is most likely Firefox? I mean it's got certificates in the settings, so maybe it's dumping old invalid ones to my C:\CRL folder?
Or maybe it's hacked and removing encryption or some weird stuff :S It's a mystery, don't know if i should be worried or not.
Click to expand...
I don't think you are hacked or infected by malware you can always scan your computer for infection using malwarebytes or eset online scanner.

Temporarily disable your AntiVirus and AntiSpyware protection - instructions here.
  • Please visit the ESET Online Scanner website
  • Click the SCAN NOW button to download the esetonlinescanner_enu.exe file to the Desktop
  • Double click esetonlinescanner_enu.exe. Accept the Terms of Use
  • Select Enable detection of potentially unwanted applications
  • In Advanced Settings: make sure that Clean threats automatically is unchecked
  • And Enable detection of potentially unsafe applications, Enable detection of suspicious applications, Scan archives, and Enable Anti-Stealth technology are all checked.
  • Click Scan
  • The program will begin to download it's virus database. The speed may vary depending on your Internet connection.
  • When completed, the program will begin to scan. This may take several hours. Please, be patient.
  • Do not do anything on your machine as it may interrupt the scan.
  • When completed it'll show a list of "Threats found", click beneath it on Save to text file.... and save it as ESET log.txt on your Desktop.
  • Then click Do not clean. Place a checkmark at Delete application's data on close, click Finish and close the program.
  • Please copy and paste the log it generated (the one you just saved on your Desktop) here.
Don't forget to re-enable previously switched-off protection software!
 

My Computer My Computer

At a glance

Windows 11AMD Ryzen 7 5700GMicron Technology DDR4-3200 16GBNVIDIA GeForce RTX 3060
OS
Windows 11
Computer type
PC/Desktop
Manufacturer/Model
HP Pavilion
CPU
AMD Ryzen 7 5700G
Motherboard
Erica6
Memory
Micron Technology DDR4-3200 16GB
Graphics Card(s)
NVIDIA GeForce RTX 3060
Sound Card
Realtek ALC671
Monitor(s) Displays
Samsung SyncMaster U28E590
Screen Resolution
3840 x 2160
Hard Drives
SAMSUNG MZVLQ1T0HALB-000H1
FreeBooter said:
I don't think you are hacked or infected by malware you can always scan your computer for infection using malwarebytes or eset online scanner.

Temporarily disable your AntiVirus and AntiSpyware protection - instructions here.
  • Please visit the ESET Online Scanner website
  • Click the SCAN NOW button to download the esetonlinescanner_enu.exe file to the Desktop
  • Double click esetonlinescanner_enu.exe. Accept the Terms of Use
  • Select Enable detection of potentially unwanted applications
  • In Advanced Settings: make sure that Clean threats automatically is unchecked
  • And Enable detection of potentially unsafe applications, Enable detection of suspicious applications, Scan archives, and Enable Anti-Stealth technology are all checked.
  • Click Scan
  • The program will begin to download it's virus database. The speed may vary depending on your Internet connection.
  • When completed, the program will begin to scan. This may take several hours. Please, be patient.
  • Do not do anything on your machine as it may interrupt the scan.
  • When completed it'll show a list of "Threats found", click beneath it on Save to text file.... and save it as ESET log.txt on your Desktop.
  • Then click Do not clean. Place a checkmark at Delete application's data on close, click Finish and close the program.
  • Please copy and paste the log it generated (the one you just saved on your Desktop) here.
Don't forget to re-enable previously switched-off protection software!
Click to expand...
2024-07-19 14:11:29
Scanned files: 270414
Detected files: 0
Cleaned files: 0
Total scan time: 00:17:06
Scan status: Finished
 

My Computer My Computer

At a glance

Windows 11 Pro3700x32GB Corsair 3200XFX Speedster MerC310 7900XTX
OS
Windows 11 Pro
Computer type
PC/Desktop
CPU
3700x
Motherboard
ASRock X570 Taichi
Memory
32GB Corsair 3200
Graphics Card(s)
XFX Speedster MerC310 7900XTX
Monitor(s) Displays
Philips 50PUS8536/12
Screen Resolution
4K60 HDR
Hard Drives
3xNVMe 1xSSD 1xMechanical
PSU
Corsair RM1000x
Case
Fractal Design R5
Cooling
Corsair H115i Pro
Keyboard
Svive Triton TKL Black brown switches
Mouse
Corsair Katar PRO XT
Internet Speed
600Mbit/200Mbit
Your computer is clean.
 

My Computer My Computer

At a glance

Windows 11AMD Ryzen 7 5700GMicron Technology DDR4-3200 16GBNVIDIA GeForce RTX 3060
OS
Windows 11
Computer type
PC/Desktop
Manufacturer/Model
HP Pavilion
CPU
AMD Ryzen 7 5700G
Motherboard
Erica6
Memory
Micron Technology DDR4-3200 16GB
Graphics Card(s)
NVIDIA GeForce RTX 3060
Sound Card
Realtek ALC671
Monitor(s) Displays
Samsung SyncMaster U28E590
Screen Resolution
3840 x 2160
Hard Drives
SAMSUNG MZVLQ1T0HALB-000H1
More than likely has to do with games.
 

My Computers My Computers

System One System Two

  • At a glance

    Windows 11 Pro 25H2 26200.8655i9-10900 10 core 20 threads32 gbnone-Intel UHD Graphics 630
    OS
    Windows 11 Pro 25H2 26200.8655
    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

  • At a glance

    Windows 11 Pro 24H2 26200.8457AMD Ryzen 7 6800U32 gbintegrated
    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
glasskuter said:
More than likely has to do with games.
Click to expand...
So i shouldn't worry then? I also think so since it's basically all there is, a browser and some game apps installed.
Weird tho that there seems to be no info around to find about this, should have happened to others i would think hmm.
 

My Computer My Computer

At a glance

Windows 11 Pro3700x32GB Corsair 3200XFX Speedster MerC310 7900XTX
OS
Windows 11 Pro
Computer type
PC/Desktop
CPU
3700x
Motherboard
ASRock X570 Taichi
Memory
32GB Corsair 3200
Graphics Card(s)
XFX Speedster MerC310 7900XTX
Monitor(s) Displays
Philips 50PUS8536/12
Screen Resolution
4K60 HDR
Hard Drives
3xNVMe 1xSSD 1xMechanical
PSU
Corsair RM1000x
Case
Fractal Design R5
Cooling
Corsair H115i Pro
Keyboard
Svive Triton TKL Black brown switches
Mouse
Corsair Katar PRO XT
Internet Speed
600Mbit/200Mbit
I'm not a gamer and don't know diddly squat about steam. Remove the files in that folder, play a game, then look at that folder again. Does playing a game add a file to that folder. If it does, it proves it's related to steam.
 

My Computers My Computers

System One System Two

  • At a glance

    Windows 11 Pro 25H2 26200.8655i9-10900 10 core 20 threads32 gbnone-Intel UHD Graphics 630
    OS
    Windows 11 Pro 25H2 26200.8655
    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

  • At a glance

    Windows 11 Pro 24H2 26200.8457AMD Ryzen 7 6800U32 gbintegrated
    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
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