Simplix_sot.dll Official

If you are a developer looking into "SOT" (possibly a typo for SOS ), SOS.dll is the Son of Strike debugging extension .

However, it is highly likely you are looking for one of the following: 1. Simplix_sot.dll

Verify the exact characters. Check if it might be Simplex , Simplix , or even a part of a Solid Edge add-in (which often uses custom .dll files) . If you are a developer looking into "SOT"

"Simplix" is a well-known third-party tool (the Simplix Update Pack ) used to integrate updates into Windows 7 or Windows 10/11 installations. Check if it might be Simplex , Simplix

Could you clarify or what software you were using when it appeared? How to best distribute DLL (addin) to Solid Edge users

Since the name is non-standard, use a tool like Malwarebytes to ensure it isn't a malicious file masquerading as a system component.