Locate the setting named .
: Facilitating secure communications, such as certificate-based authentication for Windows logon or VPN access.
Windows handles smart cards using a distinct bi-level driver architecture:
Here's what the scfilter.sys file does:
To understand what this keyword represents, it helps to break down its structural components:
The CID 87D25E32-AC0D-4EF0-B1E0-502C6B7DFB77 is not a random string—it appears in official Microsoft documentation and third-party driver catalogs as a for smart card minidrivers. Specifically, it is associated with the Belgium eID Minidriver for Smart Card , version 5.0.17.0, provided by the vendor Bosa.
If you want, I can:
The SCFILTER driver is a legitimate, kernel-mode system driver provided by Microsoft, integral to the Windows Plug and Play (PnP) subsystem.
Ensure you match the corresponding bit architecture by targeting the vendor's official portal or trusted distribution endpoints like the Microsoft Update Catalog to find security-verified installation packages. 3. Manually Point to the Generic Smart Card Class Driver
Scroll down to find the and Smart Card Device Enumeration Service . scfilter cid87d25e32ac0d4ef0b1e0502c6b7dfb77
user wants a detailed article about the string "scfilter cid87d25e32ac0d4ef0b1e0502c6b7dfb77". I need to identify what this is and produce a long, informative article. I'll search for this specific identifier to gather information about its meaning, context, technical details, etc. search results show a few relevant sources. Result 0 appears to be from Microsoft Learn, referencing "SCFILTER\CID_87D25E32-AC0D-4EF0-B1E0-502C6B7DFB77". Result 1 is from "scancircle.com" with hardware details. Result 3 and 5 are from OSR Developer Community discussions about SCFILTER. Result 2 is about scfilter.dll. Result 4 is about scfilter.sys. Result 6 is about Fortify SCA, likely unrelated. Result 7 is about SC_FILTERPOLICY, possibly unrelated. Result 8 is about Nulog2, likely unrelated. I'll open the most relevant ones to gather more details. Microsoft Learn page confirms that this identifier is a hardware ID for a smart card device. The scancircle.com page provides additional context, linking it to the "Belgium eID Minidriver for Smart Card". The OSR community discussions provide insights into SCFILTER.sys, a kernel-mode filter driver for smart cards in Windows. The user's keyword seems to be a specific hardware ID. I will also search for "SCFILTER" to get more general information about this driver. will open result 0 and result 1 for more details. Microsoft Update Catalog page shows a list of hardware IDs. It includes "scfilter\cid_a503010101ad1311". I notice the user's keyword has a similar format but with a different CID. I will also search for "cid87d25e32ac0d4ef0b1e0502c6b7dfb77" specifically. will open result 0. I have a good amount of information. The keyword is a hardware ID for a smart card device, specifically related to the Belgium eID Minidriver. I'll structure a long article covering: introduction, what is SCFILTER, technical details of the hardware ID, role in Windows, driver specifics (Belgium eID), troubleshooting, security, and conclusion. I'll cite the sources I've found. Now I'll write the article. guide provides a comprehensive overview of the string scfilter cid87d25e32ac0d4ef0b1e0502c6b7dfb77 . The following sections examine its identification as a Windows Hardware ID, the role of the SCFILTER driver, and the specific smart card hardware it supports.
The integration of the SC Filter with the CID87D25E32AC0D4EF0B1E0502C6B7DFB77 has far-reaching implications across various digital platforms, including:
Have you ever spotted a strange string like scfilter cid87d25e32ac0d4ef0b1e0502c6b7dfb77 in your logs, network traffic, or a support ticket and wondered what it means? You’re not alone. Locate the setting named
Windows sends a "Get Data" query to the card. The card responds with the raw bytes that form the 87D25E32... string.
A specific APDU (Application Protocol Data Unit) command (often using tag 0x7F68 or 0x7F69 ) issued by the OS to request a persistent, unique identifier from the card’s firmware. 3. The Discovery and Enumeration Process