I know this may sound like a duplicate of Stop PowerPoint from changing proofing language to keyboard language but the solution there doesn't seem to work.
I have Windows 10 20H2, build 9042.867 and PowerPoint v.2103.
My system language is English, and I have Russian installed as well.
My presentation is in Russian, but when I try changing the proofing language to Russian, it changes back to English within like a second. I have moved the auto detection to the bottom of the Spellcheck list in options, and Russian to the top. It doesn't help. I have tried changing keyboard layout, but that didn't work either.

  • 1
    If you change proofing language it affects only current paragraph. You need to change global/template language. Global: File >Options >Language then select your desired language (Russian) as default. (It's availible from Revision>Language>[The second from drop-down] too)
    – Lluser
    Apr 20 at 8:06

I managed to solve this! It is not a PP problem, it depends on the input language keyboard. You are using the English keyboard in Windows 10 and that is why it keeps "smart" changing it to English. But you can change the keyboard of your preferred language.

  1. Click on keyboard language on the bottom right part of the screen (ENG)
  2. Language preferences
  3. Under Preferred languages click Russian and then options
  4. Add keyboard -> English (I guess your physical keyboard is English)
  5. Delete the Russian keyboard from the Russian language
  6. Now go back and move Russian as TOP preferred language

Now you are writing in Russian but the keyboard is English! So PowerPoint won't change it when you set it to be default Russian in PowerPoint!

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Milenko Obradović is a new contributor to this site. Take care in asking for clarification, commenting, and answering. Check out our Code of Conduct.

Go to File- Options- Language- make sure 2 options are all set to Russian language: enter image description here

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