Here is the to fix or implement the block.

"Could not log in to the database" specifically due to server name resolution issues.

When these mappings exist, Windows redirects all SolidWorks server requests back into your own computer instead of letting them reach the internet. Consequently, SolidWorks cannot verify its license, resulting in immediate connection errors. Common Symptoms of a SolidWorks Host Block

Instead of asking the internet or the DNS server "Where is the license server?", SolidWorks checks the host file first. If it finds a match, it goes directly to that IP address. This bypasses DNS lookup errors and broadcast failures.

Navigate to the following directory path: C:\Windows\System32\drivers\etc

This process is for when you are a licensed user with connection problems.

On forums and YouTube tutorials, this is often presented as a quick, free solution. However, as a professional engineer or student, you need to understand why this is not only illegal but also technically fragile and potentially dangerous.

This redirects the license check to your own computer (localhost). Since your computer isn't running a SolidWorks license server, the software stops dialing home. Legally, this is a violation of the End User License Agreement (EULA). Technically, it worked for a long time.

After editing the hosts file, Windows may still be caching the old, blocked IP addresses. You need to clear this cache.

: The hosts file may be set to "Read-only" or requires administrative privileges to modify.

: Open a Command Prompt and type ipconfig /flushdns to ensure the system recognizes the new manual entries immediately. Step 4: Verify the Fix