Viber dropped Windows XP support officially in 2016 with the release of Viber 7.0.
Because Viber uses centralized servers, there is always a possibility that Rakuten may eventually disable the backend protocol for these older versions [2]. Sources: OldVersion.com - Viber History Rakuten Viber Support - System Requirements Viber Official - Desktop Features Microsoft TechNet - XP SP3 Compatibility Norton - Risks of Legacy Operating Systems viber pour pc windows xp top
To ensure that version 6.8.5 runs as the "top" performer on your machine, apply these tweaks: Viber dropped Windows XP support officially in 2016
Conclusion Viber on Windows XP represents a case study in the tradeoffs between legacy compatibility and modern security/functionality. While older Viber builds can sometimes be coaxed into running on XP, doing so invites significant security vulnerabilities, degraded feature sets, and eventual incompatibilities. The most responsible path—both for individual users and for organizations—is to move toward supported operating environments or use alternative, supported devices for messaging to preserve security, privacy, and full functionality. While older Viber builds can sometimes be coaxed