# La synchronisation a échoué

**URL:** <https://forums.ankiweb.net/t/la-synchronisation-a-echoue/5620>\
**Category:** Help\
**Created:** [December 7, 2020, 2:18pm UTC](https://forums.ankiweb.net/t/la-synchronisation-a-echoue/5620 "2020-12-07T14:18:37Z")\
**Posts on this page:** 1\
**Showing post:** 4

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**Author:** ![abdo](https://sea2.discourse-cdn.com/flex002/user_avatar/forums.ankiweb.net/abdo/32/654_2.png) [@abdo](https://forums.ankiweb.net/u/abdo)\
**Post date:** [December 7, 2020, 6:50pm UTC](https://forums.ankiweb.net/t/la-synchronisation-a-echoue/5620/4 "2020-12-07T18:50:42Z")

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I think this error message is a certain indicator that you’re using Anki 2.0.  
See this post for a way to locate the older installation:

> [@Sync and version issue](https://forums.ankiweb.net/t/sync-and-version-issue/5282/5):
>
> maybe you have installed 2.0 and 2.1 at the same time and in the startmenu you see a link to the version for 2.0? For certain upgrades uninstalling the old version first was recommended, see [https://apps.ankiweb.net/](https://apps.ankiweb.net/) Recent Anki versions should be in C:\Program Files\Anki whereas old versions were in “C:\Program Files (x86)\Anki`. Check if you find the latter folder in your windows explorer. Then I’d try to delete this and the start menu entry: From the control panel I’d try to uninstall all …

Try a recent version after deleting the older one.

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