Knowledge Base


Issues connecting to the PreSonus server when activating software.

If you are trying to activate software on your machine and receive an error that the program is unable to connect to the PreSonus server, please take a look at the list below...

  • 3rd-party antivirus software is the largest reason for this to happen.  Try completely removing antivirus software from your system, reboot, and test again.
  • PreSonus software will not connect to our server over a VPN connection or proxy server.
  • It is sometimes necessary to reboot your modem and router to clear cache that might be conflicting.
  • Installation of cracked software or malware on a system can create issues.  A lot of cracked software contains malware that installs URL redirects on your system.  These URL redirects will point Studio One or Notion to a different location, which is why it will not connect to our server.  You can try running a malware scan on your system, but it is sometimes necessary to re-install your OS.  

If you had a cracked version of Studio One on your system, it more than likely re-wrote your Hosts file and added entries to it that prevents the program from calling back to our server.  Below are instructions for resolving this issue.  (If you purchased your computer second-hand, for example, it is possible that the previous owner had a cracked version of Studio One on it.)

Here is an image of an afflicted Hosts file with the errant entries in it...


Here are instructions for resolving this issue on Mac and Windows respectively.  (The image above is from a Windows machine.)


1.  Go into your Utilities folder and open the Terminal

2.  From the Terminal command prompt, type in sudo nano /private/etc/hosts and press enter.  

3.  Type in your Mac admin password and press enter.

4.  Remove all PreSonus entries from the Hosts file on your screen.

    ** Doing the above may require hitting the up and down arrow keys to put the cursor on those

    lines and then using the delete or backspace keys to erase those characters.

5.  Press ctrl + O to save your changes.

6.  Press ctrl + X to exit the Hosts file.

7.  Enter the following command in the terminal:  sudo killall -HUP mDNSResponder and press enter.  This will clear your DNS cache and resolve your issue.


1.  Go into Cortana and type in "Notepad" to view the Notepad app.  

2.  Right-click the Notepad app and choose to Run as administrator.  If you do not do this, you will not be able to save any changes to the Hosts file.

3.  In Notepad, go to File>Open and navigate to c:\Windows\System 32\Drivers\etc and open the Hosts file.

4.  Remove all PreSonus entries from the Hosts file.

5.  Go to File>Save to save the file.

6.  You can now close Notepad and Studio One will connect.


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