# Upgrading: OC 8.2.1 to NC 9.0.5 **URL:** \ **Category:** ℹ️ Support\ **Created:** [June 28, 2016, 4:49pm UTC](https://help.nextcloud.com/t/upgrading-oc-8-2-1-to-nc-9-0-5/1264 "2016-06-28T16:49:03Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![Ken.Neiser](https://help.nextcloud.com/user_avatar/help.nextcloud.com/ken.neiser/32/15816_2.png) [@Ken.Neiser](https://help.nextcloud.com/u/Ken.Neiser)\ **Post date:** [June 28, 2016, 4:49pm UTC](https://help.nextcloud.com/t/upgrading-oc-8-2-1-to-nc-9-0-5/1264/1 "2016-06-28T16:49:03Z")
Would you happen to have any suggestions on how to do this without losing any data (database)? I have tried a couple of times to do this, the upgrade process keeps complaining that certain tables already exist (i.e. oc\_trusted…). Sorry I forgot the table name. Additionally the process also mentioned some sort of federation error, I’m not using federation. ---
**Author:** ![tflidd](https://help.nextcloud.com/letter_avatar/tflidd/32/6_22734026db12803ebb3e059622ac3534.png) [@tflidd](https://help.nextcloud.com/u/tflidd)\ **Post date:** [July 31, 2016, 12:25pm UTC](https://help.nextcloud.com/t/upgrading-oc-8-2-1-to-nc-9-0-5/1264/2 "2016-07-31T12:25:10Z")
There is a similar topic: [Several issues known from OC](https://help.nextcloud.com/t/several-issues-known-from-oc/565?u=tflidd) and a related issue on github: [https://github.com/nextcloud/server/issues/120](https://github.com/nextcloud/server/issues/120) ---
**Author:** ![Ken.Neiser](https://help.nextcloud.com/user_avatar/help.nextcloud.com/ken.neiser/32/15816_2.png) [@Ken.Neiser](https://help.nextcloud.com/u/Ken.Neiser)\ **Post date:** [July 31, 2016, 5:42pm UTC](https://help.nextcloud.com/t/upgrading-oc-8-2-1-to-nc-9-0-5/1264/3 "2016-07-31T17:42:03Z")
@tflidd have a look at this issue: [https://github.com/nextcloud/server/issues/297](https://github.com/nextcloud/server/issues/297) As one of the forum issues indicated “_…just ignore it as suggested on github._”. Even if I keep dropping the tables in the database, Nextcloud keeps going through the upgrade process. So the “errors” cannot be ignored. These errors occur in ownCloud and Nextcloud when upgrading from ownCloud 8.2.1 to Nextcloud 9 for me. So I am seeking some sort of resolution. I am sure I am not the only user that has “data collections” in ownCloud 8.2.1 that one would not want to lose. These errors probably are keeping a lot of people from upgrading to the newest versions of ownCloud or even migrating over to Nextcloud. Does anyone have any answers other than to keep dropping tables? ---
**Author:** ![tflidd](https://help.nextcloud.com/letter_avatar/tflidd/32/6_22734026db12803ebb3e059622ac3534.png) [@tflidd](https://help.nextcloud.com/u/tflidd)\ **Post date:** [July 31, 2016, 11:11pm UTC](https://help.nextcloud.com/t/upgrading-oc-8-2-1-to-nc-9-0-5/1264/4 "2016-07-31T23:11:44Z")
Normally it is recommended to update to the latest version of the 8.2.x branch (8.2.7) first. If there are still issues, that has to be solved by the developers on github. ---
**Author:** ![system](https://help.nextcloud.com/user_avatar/help.nextcloud.com/system/32/29333_2.png) [@system](https://help.nextcloud.com/u/system)\ **Post date:** [September 23, 2024, 6:25pm UTC](https://help.nextcloud.com/t/upgrading-oc-8-2-1-to-nc-9-0-5/1264/5 "2024-09-23T18:25:01Z")
This topic was automatically closed 90 days after the last reply. New replies are no longer allowed. ---
**Author:** ![wwe](https://help.nextcloud.com/user_avatar/help.nextcloud.com/wwe/32/72963_2.png) [@wwe](https://help.nextcloud.com/u/wwe)\ **Post date:** [December 4, 2024, 3:12pm UTC](https://help.nextcloud.com/t/upgrading-oc-8-2-1-to-nc-9-0-5/1264/6 "2024-12-04T15:12:26Z")