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Do you ever get this error message?
If you use a key generated serial without using this hosts file technique, It will not work permanent and gives you the error above again and againΓÇª Remember Serials may be different but hosts file editing is same required for one time only so make it now and use all Adobe cs4 and cs5 products with a key generated serial numberΓÇª
Adobe CS5 Hosts File Editing
Windows / Windows 7 / Windows XP
Step 1: Under windows 7 go to this path “C:\Windows\System32\drivers\etc” there you can see some files. We just need to work with hosts file. First we will copy this file and paste to somewhere else as a backup so if anything goes wrong we can replace that with our edited one.
Step 2: Now click on your start button search for Notepad, right-click and select Run as Administrator. This should launch notepad with all possible privileges. Now open the hosts file from the directory path: “C:\Windows\System32\drivers\etc” if no file displayed, you have to display All Files by typing (*) in the box. It will show you all files of this directory. Now you can open hosts file from there. (remember the above path won’t show any file if you try it without star number: (*) You have to use it to see the All Files)
Step 3: Now the file is front of you check the last line which is “# ::1 localhost” and paste the below lines right after it.
MAC / OS X
Editing the hosts file Editing the hosts file in Mac OS X ΓÇô Leopard, is a pretty easy task, especially if you are familiar with the terminal.
Step 1: ΓÇô Open the Terminal.app Either by start typing Terminal on the Spotlight, or by going into Applications -> Utilities -> Terminal.
Step 2: ΓÇô Open the hosts file Open the hosts by typing on the Terminal that you have just opened:
$ sudo nano /private/etc/hosts
Type your user password when prompted.
Step 3: Edit the Hosts File The hosts file contains some comments (lines starting with the # symbol), as well as some default hostname mappings (e.g. 127.0.0.1 ΓÇô localhost). Simply append your new mappings underneath the default ones. Or edit one of the default values if you know what you are doing! You can navigate the file using the arrow keys.
Step 4 ΓÇô Save the hosts fileWhen done editing the hosts file, press control-o to save the file. Press enter on the filename prompt, and control-x to exit the editor.
Step 5 ΓÇô Flush the DNS cache On Leopard you can issue a simple Terminal command to flush the DNS cache, and have your host file changes to take immediate effect:
$ dscacheutil -flushcache
HOSTS FILE ENTRIES
Enter the following entries in the HOSTS file:
127.0.0.1 hl2rcv.adobe.com 127.0.0.1 adobeereg.com 127.0.0.1 activate.adobe.com 127.0.0.1 practivate.adobe.com 127.0.0.1 ereg.adobe.com 127.0.0.1 activate.wip3.adobe.com 127.0.0.1 ereg.wip3.adobe.com 127.0.0.1 wip3.adobe.com 127.0.0.1 activate-sea.adobe.com 127.0.0.1 wwis-dubc1-vip60.adobe.com 127.0.0.1 activate-sjc0.adobe.com 127.0.0.1 3dns.adobe.com 127.0.0.1 3dns-1.adobe.com 127.0.0.1 3dns-2.adobe.com 127.0.0.1 3dns-3.adobe.com 127.0.0.1 3dns-4.adobe.com 127.0.0.1 adobe-dns.adobe.com 127.0.0.1 adobe-dns-1.adobe.com 127.0.0.1 adobe-dns-2.adobe.com 127.0.0.1 adobe-dns-3.adobe.com 127.0.0.1 adobe-dns-4.adobe.com 127.0.0.1 adobe-dns-5.adobe.com 127.0.0.1 hh-software.com 127.0.0.1 www.hh-software.com 127.0.0.1 activate.adobe.de 127.0.0.1 practivate.adobe.de 127.0.0.1 ereg.adobe.de 127.0.0.1 activate.wip3.adobe.de 127.0.0.1 wip3.adobe.de 127.0.0.1 3dns-3.adobe.de 127.0.0.1 3dns-2.adobe.de 127.0.0.1 adobe-dns.adobe.de 127.0.0.1 adobe-dns-2.adobe.de 127.0.0.1 adobe-dns-3.adobe.de 127.0.0.1 ereg.wip3.adobe.de 127.0.0.1 activate-sea.adobe.de 127.0.0.1 wwis-dubc1-vip60.adobe.de 127.0.0.1 activate-sjc0.adobe.de 127.0.0.1 wwis-dubc1-vip60.adobe.de 127.0.0.1 hl2rcv.adobe.de 127.0.0.1 nero.com 127.0.0.1 www.nero.com 127.0.0.1 activate.nero.com 127.0.0.1 www.activate.nero.com 127.0.0.1 nero.de 127.0.0.1 www.nero.de 127.0.0.1 activate.nero.de 127.0.0.1 www.activate.nero.de 127.0.0.1 validation.sls.microsoft.com