The Bitdefender Antivirus for Mac update does not work on the MacBook Air.

Hello. Bitdefender error code (1017), but it has failed in the software installation or update process.

Or, some other company's security software is mixed, and it has been infected with a virus in the past, and in some way, the data replacement of the Bitdefender installation source folder has failed due to exception handling.

There seems to be the above elements. In the case of MAC-OS, due to the unstable operation of Safari's WebKit engine, there are cases where the download and expansion of update data does not go well due to the saturation and unstable operation of temporary Internet files, so communication on the Internet side.

It will be in the form of confirming the deletion of Bitdefender by trying to delete the device malfunction, the Internet cache data on the PC side.

Even if you delete it, some files will remain after uninstalling, so you will need to check the data including the residual data. Finally, I think the following software is good for deleting residual data including temporary files of MAC-OS.

Buho-Cleaner

* Https://www.drbuho.com/

There are a paid version and a free version, but it is said that the free version has reached normal operation.

Please try it.