My outlook is stuck on the new version. How to go back to classic version?

This support article may help:

You can't open classic Outlook on a new Windows PC - Microsoft Support

Just built a new PC, new outlook was installed by default, there is no option to revert to classic it's been permanently deleted.

The whole feature set has been dumbed down.

Microsoft have fixed none of the issues with outlook they have just replaced it with mail 2.0 and taken all the reasons to buy office away, outlook and word were the only apps I used in office, there should be a cheaper more compact office where you can select the apps you want and not have a bundle of bloat installed.

New outlook is a piece of crap, the background picture is so visually annoying, can't tolerate to use it.

Everyone, did you see Hal and my replies on Page 25? It worked for me. I got a new computer and installation of Microsoft 365 and it just came with the crappy new Outlook. Classic Outlook was not on my computer and the "slide switch" on New Outlook didn't work. Doing this I was able to get back the classic Outlook that we all want.

Basically, here is what you do:

1. In the crappy new Outlook, go to the help menu like Hal shows (and in screenshot below)
2. Click on the "Go to classic Outlook" button. It will send you to this web page: https://support.microsoft.com/en-us/office/you-can-t-open-classic-outlook-on-a-new-windows-pc-5c94902b-31a5-4274-abb0-b07f4661edf5
3. Click the blue Download button and save the stub installer to someplace on your local drive.
4. Run the setup stub program you just saved. It will ask you to save your work in any open office documents - you should probably just exit out of all office apps. It will then download the rest of the software and at some point ask you for your phone number and email address that you use for your Microsoft365 subscription.
5. Then it will optionally ask if you want to be able to look at other email programs in Outlook or look at Outlook emails in the other program, such as yahoo.com or gmail.com.
6. Then classic Outlook should be installed and you can find it either by typing classic into the search bar or find it under the Start menu.
7. Right click on the Classic Outlook icon and select "Pin to taskbar" and unpin the crappy new Outlook by right clicking on its icon.
8. After some time, try the new Outlook again and see if they've fixed enough of the numerous problems with it to entice you to use it again.

The button to return to Classic Outlook was moved to the help tab:

The button to return to Classic Outlook was moved to the help tab:

After lots of searching, I came across a remedy (only temporary but works), for this problem. Right click on the Start menu. Select installed apps and hit enter. Then scroll down to find Microsoft 365 and click on the """ (that's the three (3) dots) and select Modify. Click on Modify and the select Repair, either Quick Repair. This works for me however, I seem to have to repeat this often. I haven't found a permanent fix yet so if someone does come across an answer, please let me know.

I hope this helps out.