Download and install CS5.5

[ChiDonDada]

Just purchased a new computer.  My old computer had my Creative Suite CS5.5. How do I instrall CS5.5 on my new computer?

[John T Smith]

For CS6 back to CS4 you may download ONLY if you bought direct from Adobe via download
-Log-in to your account and click this link https://account.adobe.com/products
--click Order history on the left and then the link to your order that will show on the right
--and finally click the link "Downloads and serial numbers" that will appear
--as always, write the serial number in a text file AND copy that text file and the
---download file(s) to an external drive (or two) to be sure you have what you need
-if you did not buy direct from Adobe via download you must find your original install
--if you have an Education or volume license you MUST use your original media
--the link for an Education or volume license download is not available at all
-if you bought a disc and don't have a drive you will need to buy an external USB drive
-if you bought a download from a 3rd party vendor you will need to contact that vendor

[Nancy OShea]

CS4, CS5 and CS6 are on life support.  They are not supported (use at your own risk) but can still be activated providing you have the following:
1. original media (disks or downloads) you received at purchase,
2. a legitimate serial number for that particular media, version and platform (Win/Mac),
3. an older operating system that can support legacy Creative Suite.
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NOTE 1: Creative Suite installers won't work on macOS Sierra, High Sierra or Mojave without terminal workarounds.
https://helpx.adobe.com/creative-cloud/kb/install-creative-suite-mac-os-sierra.html

NOTE 2: Catalina is not an option as it cannot support older 32-bit apps.

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Beware of fake Adobe reps who may contact you privately offering to sell you software or take control of your computer. It's a scam, run away!