There are two extensions available, one targeting Visual Studio 2015, 2017, 2019 and another targeting Visual Studio 2022 and later. Ensure you choose the correct version depending upon the version of Visual Studio you have installed. For more information on which versions are supported, refer to
Ensure all instances of Visual Studio are closed prior to installation.
qacli and qagui sync is now only supported on VS 2017 version 15.9.27 and later
qacli and qagui Visual Studio synchronization is now dependent on .NET Framework 4.72