Before you download any upgrade files, you must secure your existing work. Even "safe" updates can occasionally fail, and having a backup is your only safety net.
Download and run the latest update installer (e.g., Wampserver update 3.3.5 ). upgrade wampserver download
If you are moving from a very old version (like 2.5 to 3.0), a clean install is often safer. wampserver - Upgrade WAMP Safely - Stack Overflow Before you download any upgrade files, you must
Restart WampServer. Your manager is now updated, and your data remains intact. Before you download any upgrade files
: Copy the entire www folder (usually at C:\wamp64\www ) to an external drive or a different folder on your PC.