Do not break Windows 10 by removing SID, Microsoft warns

Microsoft has reminded admins and users not to delete something, a so-called Windows Security Identifier (SID) function in case they accidentally break applications.

It is not clear why Microsoft has given the warning for a type of SID that has been part of the operating system since Windows 8 and Windows Server 2012, but the implication is that a lack of familiarity has caused support issues.

The SIDS, a bit like the Unix UID, form a fundamental part of the Windows system for identifying users, accounts and groups and determining whether someone has access to the other.

If a Windows user (Alice, say) sets up an account on her computer in her name, Windows identifies the account with a unique SID. Alice can change her account name as many times as she wants (to AliceB or even Jeff), but the underlying SID that identifies it to Windows always remains the same.

The 2012 revision extended SIDS to include things like file access, drive locations, access to certificates, cameras, removable storage, etc. Each became a & # 39; option & # 39; that a user or application could or wanted to have access rights.

According to Microsoft, Windows 10 1809 can use more than 300, one of the most common of which looks like this:

S-1-15-3-1024-1065365936-1281604716-3511738428-1654721687-432734479-3232135806-4053264122-3456934681

It is not hard to see why this confuses someone who's deep in his registry with the help of the editor (Get started > Run > regedt32.exe) where it appears as & # 39; account unknown & # 39; with full reading rights.