ALF file is associated with ACT! Software. This is a customer relationship management application.
The lookup information required by the software is stored in ALF file format. In order to backup, restore and navigate through the ACT database, ALF file is required. Whenever ACT! Database is created, ALF file is also created which contains reference information of database for CRM data which is stored in various ADF files. In order to search through the database, ALF file is required which contains information about the structure of the database and this it helps in navigating and searching for the specific data.
In addition to the problem described above, i.e. the lack of the appropriate application to support the .ALF file, there may be several reasons that cause problems with opening and operation of the data format:
A quite common problem is the lack of application in the appropriate version. Even if you have an application, with the help of which you should open the .ALF file, you may have a problem with it because of its version. Perhaps in previous versions the application has not yet supported the .ALF file, so download the update and check again.
If you have already installed the appropriate application, and it is the correct version, the file may not open correctly, because the operating system does not have information that this program supports the file. So you need to "show" which program the computer should use. To do this:
It also happens that the file you want to open is corrupt and therefore there is no such possibility. In this situation, you should find its different version, or ask a person from whom you got, to send it again.