Download htc device manager. "htc sync manager works until and upgraded then stop" i do wish it would work with android devices other than htc phones of course, since other manufacturers don't offer similar software, it.
download htc device manager
Effective 2020/03/27, htc sync manager will no longer be supported after this date, no additional patches or updates will be made available and download of the application is discouraged you may encounter sync errors or data loss by continuing to use htc sync manager after discontinuance of htc support on 2020/03/27.