# Compatibility between Anki Web and Anki desktop after update **URL:** \ **Category:** Help\ **Created:** [January 11, 2022, 5:58pm UTC](https://forums.ankiweb.net/t/compatibility-between-anki-web-and-anki-desktop-after-update/16604 "2022-01-11T17:58:56Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![ehild](https://avatars.discourse-cdn.com/v4/letter/e/9fc348/32.png) [@ehild](https://forums.ankiweb.net/u/ehild)\ **Post date:** [January 11, 2022, 5:58pm UTC](https://forums.ankiweb.net/t/compatibility-between-anki-web-and-anki-desktop-after-update/16604/1 "2022-01-11T17:58:56Z")
Hello, After the recent Anki Web update, I’m unable to synchronise my account : When I click on synchronise on my desktop, this message appear : AttributeError: ‘Syncer’ object has no attribute ‘hostNum’. Anki 2.1.1 Python 3.6.1 Qt 5.9.2 PyQt 5.9 Platform: Mac 10.13.6 Flags: frz=True ao=False sv=? Caught exception: File “aqt/deckbrowser.py”, line 90, in \_\_renderPage File “aqt/deckbrowser.py”, line 137, in \_renderDeckTree \: ‘NoneType’ object has no attribute ‘decks’ I tried to force sync in one way in my preferences options, still not working. Does anyone have the same problem, and have a solution ? ---
**Author:** ![BlackBeans](https://sea2.discourse-cdn.com/flex002/user_avatar/forums.ankiweb.net/blackbeans/32/2283_2.png) [@BlackBeans](https://forums.ankiweb.net/u/BlackBeans)\ **Post date:** [January 11, 2022, 6:22pm UTC](https://forums.ankiweb.net/t/compatibility-between-anki-web-and-anki-desktop-after-update/16604/2 "2022-01-11T18:22:19Z")
It looks like you are using a version of Anki that is quite old. Simply try upgrading. ---
**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, 4:36am UTC](https://forums.ankiweb.net/t/compatibility-between-anki-web-and-anki-desktop-after-update/16604/3 "2023-05-01T04:36:51Z")