File Content Extraction 26.3
Filter SDK C Programming Guide

# KV_SET_OOP_USER

This structure specifies the user for KVOOP to run as, when fpSetConfig() is used with `KVFLT_SETOOPUSERWIN` or `KVFLT_SETOOPUSERUNIX`. For more information, see Run Filter with Minimal Privileges. The structure is defined differently, and contains different user information, on Windows and non-Windows platforms. In either case, the structure is defined in `kvtypes.h`, and must be initialized using the macro `KVStructInit` before use.

## Windows

    typedef struct tag_KV_SET_OOP_USER
    {
        KVStructHeader;

        const char* username;
        const char* password;
        const char* domain;
    }
    KV_SET_OOP_USER;

### Member Descriptions

`KVStructHeader` | The version of the structure. See KVStructHead.
`username` | The username of the user to start KVOOP as.
`password` | The password of the user to start KVOOP as.
`domain` | The domain of the user to start KVOOP as.

## Non-Windows

    typedef struct tag_KV_SET_OOP_USER
    {
        KVStructHeader;

        uid_t uid;
        gid_t gid;
    }
    KV_SET_OOP_USER;

### Member Descriptions

`KVStructHeader` | The version of the structure. See KVStructHead.
`uid` | The user ID for KVOOP to change to after starting.
`gid` | The group ID for KVOOP to change to after starting.

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Version 26.3 | Last updated July 2026

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Product: File Content Extraction 26.3

Topic Title: KV_SET_OOP_USER