# Error when sync target upgrade

**URL:** <https://discourse.joplinapp.org/t/error-when-sync-target-upgrade/10936>\
**Category:** Support\
**Created:** [8 September 2020 11:51 UTC](https://discourse.joplinapp.org/t/error-when-sync-target-upgrade/10936 "2020-09-08T11:51:10Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![houdini69](https://yyz2.discourse-cdn.com/flex028/user_avatar/discourse.joplinapp.org/houdini69/32/4965_2.png) [@houdini69](https://discourse.joplinapp.org/u/houdini69)\
**Post date:** [8 September 2020 11:51 UTC](https://discourse.joplinapp.org/t/error-when-sync-target-upgrade/10936/1 "2020-09-08T11:51:10Z")

</div>

To report a bug, please let us know:

- The version you are using. Joplin 1.0.242 (prod, darwin)

- If you report a problem with upgrading, please let us know both versions (from/to).

- The operating system you are using. macOS 10.14.6

If you can also please provide a log, as described here: [https://joplinapp.org/debugging](https://joplinapp.org/debugging)

```
Error: DELETE locks/exclusive_desktop_6bb70228e3ef4c05afa0e54d9c910fc6.json: "Joplin/locks/exclusive_desktop_6bb70228e3ef4c05afa0e54d9c910fc6.json" is locked, existing lock on file: 2 shared locks (Exception OCA\DAV\Connector\Sabre\Exception\FileLocked) (423): <?xml version="1.0" encoding="utf-8"?>
<d:error xmlns:d="DAV:" xmlns:s="http://sabredav.org/ns">
  <s:exception>OCA\DAV\Connector\Sabre\Exception\FileLocked</s:exception>
  <s:message>"Joplin/locks/exclusive_desktop_6bb70228e3ef4c05afa0e54d9c910fc6.json" is locked, existing lock on file: 2 shared locks</s:message>
</d:error>

    at newError (/Applications/Joplin.app/Contents/Resources/app.asar/lib/WebDavApi.js:399:11)
    at WebDavApi.exec (/Applications/Joplin.app/Contents/Resources/app.asar/lib/WebDavApi.js:426:11)
    at async FileApiDriverWebDav.delete (/Applications/Joplin.app/Contents/Resources/app.asar/lib/file-api-driver-webdav.js:206:4)
    at async tryAndRepeat (/Applications/Joplin.app/Contents/Resources/app.asar/lib/file-api.js:37:19)

```

I got that when trying to upgrade sync target " The sync target needs to be upgraded before Joplin can sync. The operation may take a few minutes to complete and the app needs to be restarted. To proceed please click on the link. Restart and upgrade"

Laurent

---

<div class="post-metadata">

**Author:** ![laurent](https://avatars.discourse-cdn.com/v4/letter/l/ce7236/32.png) [@laurent](https://discourse.joplinapp.org/u/laurent)\
**Post date:** [8 September 2020 12:13 UTC](https://discourse.joplinapp.org/t/error-when-sync-target-upgrade/10936/2 "2020-09-08T12:13:47Z")

</div>

> [@Error: file locked](https://discourse.joplinapp.org/t/error-file-locked/9225):
>
> hi, i’m getting an error while synchronizing with my nextcloud. although sync seems to work properly. Remote-Objekte aktualisiert: 1. Abgeschlossen: 05/06/2020 15:57 Letzte Fehlermeldung: Error: PUT fb0bff5e149d4f77be87f6a5f3390a97.md: "joplin/fb0bff5e149d4f77be87f6a5f3390a97.md" is locked (Exception OCA\DAV\Connector\Sabre\Exception\FileLocked) (423): \<?xml version="1.0" encoding="utf-8"?\> \<d:error xmlns:d="DAV:" xmlns:s="http://sabredav.org/ns"\> \<s:exception\>OCA\DAV\Connector\Sabre\Except…