If none of the above works, the issue may be specific to how Windows 7 handles large server lists (thousands of entries). You can increase the memory allocated to DLLs.
These values increase the number of handles Windows allows a single process (CS 1.6) to manage, preventing DLL unloads due to handle exhaustion.
In the "serverbrowserdll unloaded" scenario on Windows 7, the game client fails to render the server list interface because the specific DLL responsible for the browser UI is stripped from memory. However, the underlying network socket often remains open and listening for a short period before the engine realizes the GUI is missing. serverbrowserdll unloaded cs 16 win7 work
If you have installed a custom game menu or GUI (common in non-Steam versions), it may be incompatible with Windows 7's rendering of the ServerBrowser module.
Use an external server browser instead of the in-game one: If none of the above works, the issue
Add servers to your Steam favorites via the external tool, then join from the in-game Favorites tab (which does not trigger the serverbrowserdll reload bug).
Sometimes the cached data for the server browser becomes corrupted. These values increase the number of handles Windows
Windows 7’s DEP feature monitors programs for malicious code execution. Sometimes, it flags legitimate DLL loading operations—especially network-related ones like serverbrowserdll—as suspicious and unloads them.