# Unable to use anki due to "did you forget to downgrade and switch" error **URL:** \ **Category:** Help\ **Created:** [August 30, 2021, 11:53am UTC](https://forums.ankiweb.net/t/unable-to-use-anki-due-to-did-you-forget-to-downgrade-and-switch-error/12789 "2021-08-30T11:53:12Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![sbreton](https://avatars.discourse-cdn.com/v4/letter/s/94ad74/32.png) [@sbreton](https://forums.ankiweb.net/u/sbreton)\ **Post date:** [August 30, 2021, 11:53am UTC](https://forums.ankiweb.net/t/unable-to-use-anki-due-to-did-you-forget-to-downgrade-and-switch-error/12789/1 "2021-08-30T11:53:12Z")
I downloaded anki yesterday, then installed a new version today. Now, when I try to open up Anki, I see “this program requires a new version of Anki to open. Did you forget to use the downgrade and switch button prior to switching anki versions?”. When I press “ok” (which is the only option) it takes me to profiles, then when I press downgrade and switch, it says the following profile could not be dowgraded. Therefore, I am unable to open Anki at all. Any help is much appreciated. Thanks ---
**Author:** ![dae](https://sea2.discourse-cdn.com/flex002/user_avatar/forums.ankiweb.net/dae/32/65_2.png) [@dae](https://forums.ankiweb.net/u/dae)\ **Post date:** [August 30, 2021, 12:17pm UTC](https://forums.ankiweb.net/t/unable-to-use-anki-due-to-did-you-forget-to-downgrade-and-switch-error/12789/2 "2021-08-30T12:17:53Z")
It sounds like you have multiple versions on your computer, and have accidentally opened the older one - please double check which one you’re opening. ---
**Author:** ![system](https://us1.discourse-cdn.com/flex002/uploads/anki2/original/1X/8f1279ababc5879d54e4838989f606cfe55af8c7.jpeg) [@system](https://forums.ankiweb.net/u/system)\ **Post date:** [May 1, 2023, 4:53am UTC](https://forums.ankiweb.net/t/unable-to-use-anki-due-to-did-you-forget-to-downgrade-and-switch-error/12789/3 "2023-05-01T04:53:07Z")