If you’re a CAD user, you may have experienced errors after uninstalling or updating DraftSight — crashes on startup, license problems, or slow performance. These issues often occur because old configuration files, cached data, or registry entries remain on your system.
A clean reinstall ensures a completely fresh start and removes every trace of previous installations.
👉 Read the full tutorial on CAD Store: https://cad-store.net/en/blog/post/draftsight-clean-reinstall
Step 1 – Uninstall DraftSight Completely
Go to Control Panel → Programs → Uninstall a Program
Select DraftSight and uninstall it.
Make sure no DraftSight processes are running in Task Manager before continuing.
(More details here 👉 https://cad-store.net/en/blog/post/draftsight-clean-reinstall
)
Step 2 – Delete Remaining Files and Folders
Even after uninstalling, some folders remain. You should manually rename or remove them:
C:\Users[username]\AppData\Roaming\DraftSight → rename to DraftSight_old
C:\ProgramData\Dassault Systemes\DraftSight → rename to DraftSight_old
👉 Full instructions with screenshots: https://cad-store.net/en/blog/post/draftsight-clean-reinstall
Step 3 – Clean Up Registry Entries (Important!)
⚠️ Warning: Editing the Windows Registry incorrectly can cause system errors. Always back up before making changes.
Delete the following keys if they exist:
HKEY_CURRENT_USER\Software\Dassault Systemes\DraftSight
HKEY_LOCAL_MACHINE\Software\Dassault Systemes\DraftSight
👉 See full registry cleaning steps here: https://cad-store.net/en/blog/post/draftsight-clean-reinstall
Step 4 – Reboot and Install the Latest Version
Restart your computer.
Download the latest DraftSight installer from the official Dassault Systèmes website.
Install as a fresh setup — this avoids conflicts from previous versions.
👉 Full reinstall guide here: https://cad-store.net/en/blog/post/draftsight-clean-reinstall
Step 5 – Activate and Verify the Installation
Once installed, check:
License activation works correctly.
All previous issues (crashes, startup errors, UI glitches) are resolved.
If problems persist, refer to the full guide below 👇
👉 Read the full clean reinstall tutorial: https://cad-store.net/en/blog/post/draftsight-clean-reinstall
Final Thoughts
Performing a clean reinstall of DraftSight saves hours of frustration — especially if your system had corrupted profiles or failed updates. By removing leftover data and starting fresh, you ensure a stable and optimized CAD environment.
If you found this guide useful, share it or leave a comment — it helps other engineers fix issues faster!
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