What happens when you have a valid license, but the server rejects it? This is where the true technical "fix" comes into play.
You’ve purchased the license. You have the email with the key. You paste it into the VisualSVN Server Manager, hit "Install License," and are met with a vague error: "The license key is invalid" or "Failed to install license." visual svn server license key fix
This is often not a problem with the key itself, but with the environment. What happens when you have a valid license,
If other fixes fail, perform a repair install: If you recently migrated servers or changed service
If you recently migrated servers or changed service accounts, the NETWORK SERVICE account may have lost read access to the registry key containing the license.
Warning: Incorrect registry editing can break Windows. Proceed with caution.
Steps: