Do these 3 things before closing this tab:
1Scan for outdated or missing drivers - takes under a minute2Clear out junk files and repair common Windows errors3Fix the driver behind crashes, sound loss and screen glitchesNewSID was a free Sysinternals utility for changing a Windows computer’s SID after cloning, but Microsoft has retired it and says it is no longer available for download. Microsoft says it does not support Windows images prepared with NewSID; its supported approach is to prepare images with Sysprep.
What NewSID did
NewSID was a Win32 utility documented by Mark Russinovich for Windows deployments involving cloned disks. It generated a computer SID and replaced references to the previous computer SID in the Registry and file security descriptors. It also offered SID synchronization and an option to change the computer name.
As an Amazon Associate I earn from qualifying purchases.
Microsoft’s NewSID v4.10 documentation, published November 1, 2006, described the computer SID as using three 32-bit subauthorities and said NewSID generated a random 96-bit value for them. That is a description of the historical tool, not current Windows deployment guidance. Read Microsoft’s NewSID documentation.
The Tool Desk
Outbyte PC Repair FREERepair Windows errors before they cause bigger problemsFix Now →Outbyte Driver Updater FREEScan for outdated or missing drivers - takes under a minuteDriver Scan →Is NewSID still available to download?
No. Microsoft’s current notice says NewSID “has been retired and is no longer available for download.” The Sysinternals blog announced its end of life in 2009. Because Microsoft no longer distributes or supports it, an archived copy should not be treated as a supported Windows deployment tool. See the Sysinternals end-of-life announcement.
#1 Best Overall
- Fresh USB Install With Key code Included
- 24/7 Tech Support from expert Technician
- Top product with Great Reviews
NewSID or Sysprep: which should you use?
| Approach | Purpose described | Microsoft support status | Availability and guidance |
|---|---|---|---|
| NewSID | Historically changed a computer SID after cloning an installed system; could also rename the computer. | Microsoft says it does not support images prepared with NewSID. | Retired and unavailable for download; the NewSID page is historical documentation. |
| Sysprep | Preparing Windows images for deployment. | Microsoft says it supports images prepared with Sysprep. | Consult current Windows deployment documentation for instructions that match your Windows version and deployment scenario. |
These are not interchangeable recommendations in Microsoft’s documentation: it explicitly distinguishes unsupported NewSID-prepared images from supported Sysprep-prepared images. The 2006 NewSID page does not provide a current, version-specific Sysprep procedure. For operational steps, use Microsoft’s current Sysprep overview and follow the guidance for the Windows edition and deployment workflow you use.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Why the old instructions are not a safe procedure today
The NewSID documentation required administrative privileges, advised making a full backup, and warned that use was at the user’s own risk. It also said IISAdmin had to be stopped before running NewSID on a system using that service. Its historical automatic command was newsid /a [newname]; that syntax documents the retired utility and is not a current recommendation.
Rank #2
- Comprehensive Solution: This Windows 10 reinstall DVD provides a complete solution for resolving various system issues, including crashes, malware infections, boot failures, and performance slowdowns. Repair, Recover, Restore, and Reinstall any version of Windows.
- USB will work on any type of computer (make or model). Creates a new copy of Windows! DOES NOT INCLUDE product key.
- Windows not starting up? NT Loader missing? Repair Windows Boot Manager (BOOTMGR), NTLDR, and so much more with this DVD. Clean Installation: Allows you to perform a fresh installation of Windows 11 64-bit, effectively wiping the system and starting from a clean slate.
- Step by Step instructions on how to fix Windows 10 issues. Whether it be broken, viruses, running slow, or corrupted our disc will serve you well
- Please remember that this DVD does not come with a KEY CODE. You will need to obtain a Windows Key Code in order to use the reinstall option
Russinovich’s 2006 page also cautioned that NewSID had not been tested for every cloning option and stated: “Regarding SIDs, Microsoft does not support images that are prepared using NewSID, we only support images that are prepared using SysPrep.” Those statements explain the historical tool’s limits; they are not a substitute for deployment instructions written for your current Windows version.
Quick Recap
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
