# 3.5.x Desktop Upgrade to 4.2.x shows APOC compatible version as 3.5.x

**URL:** <https://community.neo4j.com/t/3-5-x-desktop-upgrade-to-4-2-x-shows-apoc-compatible-version-as-3-5-x/34006>\
**Category:** Desktop\
**Created:** [February 19, 2021, 8:27pm UTC](https://community.neo4j.com/t/3-5-x-desktop-upgrade-to-4-2-x-shows-apoc-compatible-version-as-3-5-x/34006 "2021-02-19T20:27:40Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![brandon](https://sea1.discourse-cdn.com/flex021/user_avatar/community.neo4j.com/brandon/32/4200_2.png) [@brandon](https://community.neo4j.com/u/brandon)\
**Post date:** [February 19, 2021, 8:27pm UTC](https://community.neo4j.com/t/3-5-x-desktop-upgrade-to-4-2-x-shows-apoc-compatible-version-as-3-5-x/34006/1 "2021-02-19T20:27:40Z")

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Small bug-ish thing:

in the new Desktop, when I take a 3.5.x database, upgrade to 4.2.x, APOC is still installed as 3.5.x. The right column for plugins still shows APOC compatible version as 3.5.x instead of 4.x APOC. Neo4j 4 cant start with APOC 3.x jar in the plugins dir. Complains about missing host in settings. Not a helpful or correct warning. Deleting the 3.5. APOC jar out of the local db plugins dir was the only way to fix this issue.

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**Author:** ![andrew\_bowman](https://sea1.discourse-cdn.com/flex021/user_avatar/community.neo4j.com/andrew_bowman/32/73_2.png) [@andrew\_bowman](https://community.neo4j.com/u/andrew_bowman)\
**Post date:** [February 22, 2021, 8:48pm UTC](https://community.neo4j.com/t/3-5-x-desktop-upgrade-to-4-2-x-shows-apoc-compatible-version-as-3-5-x/34006/2 "2021-02-22T20:48:39Z")

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Thanks for spotting that, can you create an issue on our github for us to track?

> **[Issues · neo4j-devtools/neo4j-desktop](https://github.com/neo4j-devtools/neo4j-desktop/issues)**
>
> The Neo4j Graph Platform, on your desktop OS. . Contribute to neo4j-devtools/neo4j-desktop development by creating an account on GitHub.

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<div class="post-metadata">

**Author:** ![brandon](https://sea1.discourse-cdn.com/flex021/user_avatar/community.neo4j.com/brandon/32/4200_2.png) [@brandon](https://community.neo4j.com/u/brandon)\
**Post date:** [February 22, 2021, 9:16pm UTC](https://community.neo4j.com/t/3-5-x-desktop-upgrade-to-4-2-x-shows-apoc-compatible-version-as-3-5-x/34006/3 "2021-02-22T21:16:10Z")

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Actually found the issue reported in 2019. Just added that its still an issue but the errors in Neo4j 4.x are different now.

> <https://github.com/neo4j-devtools/neo4j-desktop/issues/44>
>
> When you upgrade versions of Neo4j, the APOC plugin doesn't get upgraded which w…ill cause your database to fail to start. Removing the plugin also doesn't work, it thinks it does but it doesn't really. You have to go into the file system, remove APOC, and then you can use Neo4jDesktop to install the APOC plugin which will be the updated version and your database will also start.

Id also suggest to the neo4j core team to check the plugin compatibility early enough to log this error before the app crashes.