Deactivating/reactivating CS5

@robr44802798,

See if this helps you.

https://helpx.adobe.com/download-install/kb/activation-deactivation-help.html

CS5 is obsolete software from 12 years ago, no longer sold or supported.  Sorry.

MODERN OPTIONS:
Photoshop Elements or Premier Elements (approx USD $100, no subscription needed).
https://www.adobe.com/products/photoshop-elements.html

Creative Cloud Photography Plan (approx $10/month for 12 months). Includes the following:

• Photoshop CC and Photoshop on iPad
• Camera Raw
• Lightroom on desktop, mobile and the web
• Lightroom Classic
• Portfolio website + hosting
• Adobe Express (free starter plan)
• Bridge
• 20 GB cloud storage (upgradable to 1 TB).

https://www.adobe.com/creativecloud/photography.html

Premium Adobe Express Express ($10/month).

• Creative Cloud Express app (web and mobile)
• Premiere Rush (desktop and mobile)
• Photoshop Express (mobile)
• Spark Video (mobile)
• Spark Page (mobile)
• Adobe Portfolio + hosting
• 100 GB of cloud storage
• All premium templates and design assets including the entire collection of over 160 million royalty-free Adobe Stock photo collection.

https://helpx.adobe.com/express/using/express-overview.html

Creative Cloud All Apps (51 + apps & services) and Single Apps Plans
https://www.adobe.com/creativecloud/plans.html

You can deactivate. Please go to Adobe Customer Service and only ask to have your activations reset (make sure to sign in to your Adobe account first and allow popups on your browser):
https://helpx.adobe.com/contact.html?rghtup=autoOpen will automatically open the chat window.
Type "Agent" in the chat box to bypass the chatbot and be connected to a person.

You may also be able to contact Adobe by phone:
https://helpx.adobe.com/contact/phone.html

@robr44802798 and @17511605, as mentioned by @John T Smith, you're both incorrect (to date): cs5 activation servers are still active.

@robr44802798,

1. you can deactivate all older cs versions, including cs5.

2. you didn't include enough info to determine why you're having trouble activating. @John T Smith mentioned some solutions for some problems.

3. if those solutions don't work, what's your os and what's the problem?  a screenshot of the error message (if there is one) would be helpful.

i

As far as I know, only CS4 and earlier activation servers have been retired

TLS 1.2 is now required to connect https://helpx.adobe.com/x-productkb/multi/eol-tls-support.html
-on Windows be sure to do the EASYFIX.MSI in step 2 of the above link
-test your browser https://clienttest.ssllabs.com:8443/ssltest/viewMyClient.html
-http://helpx.adobe.com/x-productkb/policy-pricing/activation-network-issues.html
-https://helpx.adobe.com/download-install/kb/unable-to-reach-adobe-servers.html