Scfilter Cid87d25e32ac0d4ef0b1e0502c6b7dfb77 [exclusive] [ Browser Quick ]

The string scfilter cid87d25e32ac0d4ef0b1e0502c6b7dfb77 is a , likely from a Symantec (Broadcom) Endpoint Protection environment.

Because SCFilter operates at the kernel level and intercepts file‑system and device I/O, it occupies the same space as modern and antivirus minifilter drivers. A Windows file‑system minifilter is a specialised driver designed to intercept and modify I/O requests sent to a file system or another filter driver, and such drivers are used by a wide range of security software.

: Contact your internal IT helpdesk or security officer. They will provide the necessary vendor package (such as SafeNet, ActivID, or Oberthur middleware).

Restart your computer to allow the subsystem to hook back into the PnP manager. 2. Install the Official Vendor Middleware or Minidriver scfilter cid87d25e32ac0d4ef0b1e0502c6b7dfb77

When a smart card is inserted into a connected peripheral reader, the Windows Smart Card Framework (managed by the scfilter.sys driver) interrogates the card's chip. It pulls a string of data known as the string.

Many major enterprise smart card manufacturers publish their minidrivers directly to Microsoft’s infrastructure. Leave the smart card inserted in your reader. Open (Win + I) and navigate to Windows Update . Click Check for updates .

Use a tool like Cuckoo or CAPE to see what the extracted blob does. : Contact your internal IT helpdesk or security officer

: If you see this string in reports related to high CPU usage or system lag, it may indicate a driver conflict or an issue with the physical security key rather than malware.

A hardware ID is the exact identifier read from the device. A compatible ID is a more generic identifier that allows a driver to support a range of devices that share common characteristics. The CID 87D25E32-AC0D-4EF0-B1E0-502C6B7DFB77 often appears as a compatible ID, enabling broader driver support.

Look under > Optional Updates to see if a driver matching your card vendor is available for download. 2. Install the Vendor's Proprietary Software provided by the vendor Bosa.

If you have stumbled upon this string in your Windows Device Manager, error logs, or driver scanning software, you are looking at a system-level hardware ID. It is generated by the Windows ( scfilter.sys ).

The core of the keyword is . The “CID” stands for Card Identifier —a unique, hardware‑generated label that Windows uses to identify a specific smart card. It is not hard‑coded in the driver; rather, the operating system dynamically creates it during the smart‑card discovery process.

If you’ve seen the string appear in Device Manager, a driver installation log, or a support forum, you’re looking at one of Windows’ most specialized—yet least documented—internal components. This guide explains exactly what this identifier means, why it exists, and what to do when something goes wrong.

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.