Excel, Word, Photoshop, Indesign Ect. Not working after I updated mac to Catalina

Revert your Mac to a previous macOS version - Apple Support

Ancient 32-bit programs won't run in Catalina.

Jill, sorry you are having this problem. Just to be clear, you did an upgrade, not an update. I hope the following is helpful to you in addressing your ‘problems’ with Microsoft Office and Adobe after the OS upgrade to Catalina.

·      First, Apple has regularly informed all of us for a couple of years that at some point our old 32 bit programs would no longer work with a future OS upgrade. That has finally occurred as we have been told it would. This appears to be the case with you.

·      Any other old 32 bit programs you have installed will also be affected. They also will no longer work and will have to be upgraded or replaced.

·      If you have Microsoft Office for Mac 2016 or later, it can be updated at no cost. If it is an earlier version, it cannot be updated. You will have to purchase an upgrade.

·      If a person elects not to upgrade their Microsoft Office, there are several excellent alternatives. They are the free LibreOffice and OpenOffice apps. Additionally, your Apple OS provides three free programs which you may use as an alternative to Office. They are Pages, Numbers and Keynote.

·      Any of these apps can and will open your older Office documents, allowing you to work with them. With them you may also create new documents and save them as Word files, etc. when you need to share files with other people who only have Office installed.

·      You should be aware that using these other apps to open Office documents will likely result in some formatting changes.

·      Using any of these programs does involve a learning curve as they work a bit differently, but all of them are fine programs and they are free.

·      If you decide to upgrade from an older version of Office, you have options. You may elect to subscribe to any of the following:

• • Office 365 Home:  $99.99 per year or $9.99 monthly. This allows you to install Office in up to six devices. This service must be renewed yearly. You may try the service free for one month.
  • Office Personal:             $69.99 per year or $6.99 monthly. This is for installation on one device only. This service must be renewed yearly. You may try the service free for one month.
  • Office Home & Student:  $149.99 one-time purchase cost. This is a purchase for installation on one device only and is not renewed or have a monthly fee. It does not expire.
  • The second and third options include fewer additional apps such as having no Outlook app. Check the Microsoft site for details.

·       Finally, and this is important, when purchasing any of these Office upgrades, you need to register your purchase on the Microsoft web site, including which device or devices the apps are installed on. This can be changed later if a device is replaced. You must do this registration or you can have problems.

As to your Adobe apps, you will likely have to purchase upgrades or subscribe to their new monthly service offerings.

In summary, Apple has warned us of the coming change to 64 bit operations only. It has occurred. Now, it is up to us to decide how to proceed. I hope this information is helpful to you.