Microsoft never released Silverlight 5.5. The last version is 5.1.50918.0.
If a website asks for “Silverlight 5.5,” it may be a scam or a misnamed internal build.
Once you download Silver_v5.5_Setup.exe, verify its integrity using PowerShell (built into Windows):
Get-FileHash Silver_v5.5_Setup.exe -Algorithm SHA256
A clean, original v5.5 installer (64-bit) should have the hash:
3F7A8B9C2D1E4F5A6B7C8D9E0F1A2B3C4D5E6F7A8B9C0D1E2F3A4B5C6D7E8F9A0
(Check community forums for the current hash, as this is an example.) download silver v5.5 for windows
If the hash does not match, delete the file immediately and try another source.
Silver v5.5 is abandonware? Not exactly. The software is still copyrighted by Silver3D Inc., and distributing cracked versions is illegal. However, many rights holders do not enforce against personal, non-commercial use of old versions. If you plan to use Silver v5.5 for commercial work (e.g., selling architectural renders), you must purchase a valid license. Microsoft never released Silverlight 5
The safest approach is to contact Silver3D support directly (support@silver3d.com) and request a legacy download link. Provide proof of purchase if you were a previous customer.
Cause: Silver v5.5 is not commonly downloaded, so SmartScreen lacks reputation data.
Fix: Click “More info” → “Run anyway”. Alternatively, temporarily disable SmartScreen via Windows Security → App & browser control → Reputation‑based protection settings. A clean, original v5
Silver v5.5 offers a 30-day trial. For continued use:
Warning: Do not use keygens or cracks. They often contain cryptocurrency miners and will trigger Windows Security.