passfilt.dll in The Network Encyclopedia

What is passfilt.dll?

A file in Microsoft Windows NT Service Pack 3 or later that allows administrators to increase password strength. The file establishes the following rules for password creation:

The minimum password length is six characters.
The password cannot contain a username or any part of the user’s full name.
The password must contain characters from at least three of the following categories:
- Uppercase letters
- Lowercase letters
- Numbers
- Non-alphanumeric characters, specifically:
  . , ; : * & % !

TIP

To install passfilt.dll, first install Windows NT Service Pack 3 or later on your domain controller, which copies passfilt.dll into the %SystemRoot%\system32 directory. Then use registry editor to edit the following key:

HKEY_LOCAL_MACHINE
    System
        CurrentControlSet
            Control
                Lsa

and create or modify the following values:

Value:
Notification Packages
Type:
REG_MULTI_SZ
Data:
passfilt.dll

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passfilt.dll

Definition of passfilt.dll in The Network Encyclopedia.

What is passfilt.dll?

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