- We are unable to activate [product name]. Product activation is required to use this product...
- Please connect to the Internet and retry.
- Either your computer is offline or the clock on your computer is set incorrectly, causing a connection error. An Internet connection is required. Please connect to the Internet or adjust your clock and try again.
- You may have limited access to Adobe apps or services.
To determine if you have access to the Adobe activation servers, click this link.
If you see a test successful message (see screenshots below), you have access to the activation servers. Try activating or starting your software.
You may get an "Access Denied" message when you click the CS5/CS5.5 link. This is still a confirmation that you can access the activation servers. Try activating or starting your software. If you need help with your activation code, see Redemption code help.
Operating system hosts files map host names to IP addresses. An incorrectly configured hosts file can affect your computer's ability to connect to Adobe's activation servers.
Creative Cloud users: Resetting the hosts file can also resolve errors such as "The Creative Cloud applications are available in trial mode" or "Trial expiration."
- Windows: Right-click the tool and choose Run as Administrator.
- macOS: Double-click the tool and enter the admin credentials to continue.
For more information on how to use the Limited Access tool, see Limited access error in Creative Cloud for desktop app.
If the issue is not fixed even after you run the Limited Access Repair tool, reset the hosts file manually.
If the issue is not fixed even after you run the Limited Access Repair tool, reset the hosts file manually:
Reset the hosts file on Windows
Reset the hosts file on macOS
Adobe’s activation servers are on secure (HTTPS) sites, so your computer must be able to access these types of sites.
Check your computer's clock.
Disable authentication proxy servers.
Check firewall settings.
If your computer is behind a firewall, make sure that the firewall is not blocking the activation server through ports 80 and 443.
For instructions on allowing access to the activation server, consult your network administrator or your home network’s firewall documentation.
If your firewall requires an executable, specify PDApp.exe, located here:
- Windows: Program Files\Common Files\Adobe\OOBE\PDApp\core
- macOS: Applications > Utilities > Adobe Application Manager > core > PDApp
The Adobe sign-in (CC) and activation (CS) processes require the GlobalSign Root CA certificate.
Follow these steps to make sure that the GlobalSign Root CA certificate is installed and enabled.
Locate the GlobalSign Root CA certificate. You may need to select the All Items category, and then search for Global to locate the certificate.
If the certificate is not available, see Alert "The certificate issuer for this site is untrusted" for steps to install the certificate.
To use your subscription on another computer or device, see On how many computers can I use my Creative Cloud subscription?
If you are still unable to resolve your connectivity issues, contact Customer Service.