Edge Rewrite
// HTMLRewriter · presentation

This page was redesigned at the edge.

Cloudflare fetched the original article and streamed it through HTMLRewriter to apply an entirely new visual system without rebuilding the source page.

// request.cf · coarse context

A page that knows where it met you.

Only coarse request metadata is shown. This demo does not display or persist visitor IP addresses.

Country
US
Cloudflare location
CMH
Connection
HTTP/2
Language
Not provided

Ray ID: a28ba339986cf25b

Jump to content

// Workers AI · dad joke modeWhat did SULFNBK.EXE say? I'm a little burned.

From Wikipedia, the free encyclopedia

SULFNBK.EXE (short for Setup Utility for Long File Name Backup) is an internal component of the Microsoft Windows operating system (in Windows 98 and Windows ME) for restoring long file names.[1]

Email hoax

[edit]

The component became famous in the early 2000s as the subject of an e-mail hoax.[2] The hoax claimed that SULFNBK.EXE was a virus, and contained instructions to locate and delete the file. While the instructions worked, they were needless and (in some rare cases, for example, when the long file names are damaged and need to be restored) can cause disruptions, as SULFNBK.EXE is not a virus, but instead an operating system component.

Even people who didn't receive the e-mail were still perplexed if they found the file by themselves (because of its quickly hand-drawn icon), thinking that it could be a virus or trojan horse.

In Windows 98 and ME, where the file existed, SULFNBK.EXE can be found in Windows "COMMAND" directory (a directory that contains command line tools, usually C:\WINDOWS\COMMAND\).

A very similar hoax happened with jdbgmgr.exe.

References

[edit]
  1. "What is a Long File Name?". Computer Hope. Retrieved 2025-02-24.
  2. "Sulfnbk.exe Hoax Virus information". AOL Help. Archived from the original on 2015-09-26. Retrieved 2025-02-24.
[edit]