Win Subst

Win Subst is a free tool for Windows to substitute a drive letter to a local folder on the same computer, just like the old DOS subst command. For example, you could use Win Subst to map your Google Drive folder stored at C:\Users\[your name]\Google Drive to a drive letter like S:\. Whenever you click on the S:\ drive in the Windows Explorer or My Computer you would actually be redirected to the Google Drive folder and you can view or modify all files and files as they where stored on drive S:\. This can be useful in so many different situations, it allows you for example quick access to files that are stored deeply on your computers hard-drive. Also it can help you to overcome limitations when working with paths that are longer than 256 characters.

Win Subst: interface

System tray

Win Subst can minimise to the system tray. By minimising the program to the system tray Win Subst is no longer visible on the screen. To restore Win Subst from the system tray simply click on the Win Subst tray icon.

Win Subst: system tray icon


Win Subst is released as freeware (not as free or open source software). Win Subst contains no advertisement, in-app purchases, hidden fees, or disabled functionality. The usage of Win Subst is licensed to you for free in accordance with the terms and conditions as described in our End User License Agreement (EULA).

Virtual Drives

Virtual drives created with Win Subst are system wide available for all programs as long as Win Subst is active. Closing Win Subst will automatically disconnect all virtual drives. Please note that Windows will also automatically disconnect all virtual drives when ending your Windows session (log off / shutdown / restart).

Drag and Drop

Win Subst supports drag and drop both individual folders and project files from the Windows Explorer.

Project files

Substituted drives be saved in Win Subst project files for easy access each time you continue working on your computer.

Automatic detection

Win Sub automatically detects already substituted drives each time you run Win Subst. Found substituted drives will be added to the Win Subst interface.

Issues and limitations

Win Subst1.0x is still in development. The short list below shows currently known issues and limitations:

  • Win Subst does not remember/restore substituted folders after logoff/logon.
  • Win Subst does not support mapping of network shares.

Download Win Subst

Win Subst is available for download as a “ZIP” archive. Unzip Win Subst to any folder you prefer using the build-in Windows decompressor or a free archiver tool like 7-ZIP. Double click “winsubst.exe” after extracting the ZIP archive to run Win Subst.

Version: 1.01
License: Freeware (EULA)
Document format: ZIP archive
File size: 1 MB
Downloads: 11
Platform: Windows x64
MD5 Hash: 4d9a81bbb391a78ca8fb624a3fdba6ca
SHA1 Hash: 8ee491604ae3e2b9dce2b8b6fb67514306ce68de
SHA256 Hash: ae0d3d47501c2ab49d060fdaaba6294aaf6225197d58313ef9d3831d31de5bb7

To verify the integrity of the “Win Subst 1.01” ZIP archive check the MD5, SHA-1 or SHA-256 checksum after download by using a Hash calculator ( for example Hash Tool, available for free in the Microsoft Store ).

No warranties

Win Subst is provided “As Is”, without warranty of any kind, express or implied, including but not limited to the warranties of merchantability, fitness for a particular purpose and noninfringement. In no event shall the authors or copyright holders be liable for any claim, damages or other liability, whether in an action of contract, tort or otherwise, arising from, out of or in connection with the software or the use or other dealings in the software.

In no event does No Nonsens inc. authorise the use of “Win Subst” in applications or systems where “Win Subst” failure to perform can reasonably be expected to result in a significant physical injury, or in loss of life. Any such use by you is entirely at your own risk, and you agree to hold No Nonsens inc. harmless from any claims or losses relating to such unauthorised use.

Read more about terms and conditions in our End User License Agreement (EULA).


We are excited to hear your thoughts about Win Subst. If you have a question, need support or if you have a request about Win Subst just let us know by using the “leave a reply fields” below. If you prefer to contact us privately please use our contact form.

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