If you find that Viber is too unstable or lacks the features you need, consider these modern alternatives that may still offer XP-compatible versions or lightweight clients:
Assurez-vous que votre Windows XP est à jour (Service Pack 3 recommandé). viber pour pc windows xp top
If the native legacy application fails to handshake with modern servers, your best workaround is to execute the mobile variant of Viber inside an optimized, lightweight Android emulator tailored for older computers. If you find that Viber is too unstable