This might work:

If your recovery model is set to FULL.. change it to SIMPLE, shrink the DB, and change the recovery model back to FULL
>>Try with SSMS:
>>Right Click on DB
>>Tasks->Shrink->Files
>>In the form choose "File type: LOG"
>>From option group "Reorganize pages before ...."
>>and then set File size to 0 (Zero) MB
>
>Thanks, I have tried both approaches but ended up in the same situation.
>
>However, I have a move of the log file which is in effect and that will only become live, to the new directory and the new file name, when I will restart the server. So, that might be why I cannot adjust the log file related settings.