# Windows client sync issues with VFS - some folders not working - NC client 33.0.x and 34.0.3

**URL:** <https://help.nextcloud.com/t/windows-client-sync-issues-with-vfs-some-folders-not-working-nc-client-33-0-x-and-34-0-3/250662>\
**Category:** 💻 Desktop\
**Tags:** windows\_problem, desktop-client, nc34, windows, vfs, nc33\
**Created:** [October 7, 2026, 11:59am UTC](https://help.nextcloud.com/t/windows-client-sync-issues-with-vfs-some-folders-not-working-nc-client-33-0-x-and-34-0-3/250662 "2026-10-07T11:59:39Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![c\_b1](https://help.nextcloud.com/user_avatar/help.nextcloud.com/c_b1/32/70809_2.png) [@c\_b1](https://help.nextcloud.com/u/c_b1)\
**Post date:** [October 7, 2026, 11:59am UTC](https://help.nextcloud.com/t/windows-client-sync-issues-with-vfs-some-folders-not-working-nc-client-33-0-x-and-34-0-3/250662/1 "2026-10-07T11:59:40Z")

</div>

> ****
>
> ##

Some or all of the below information will be requested if it isn’t supplied; for fastest response please provide as much as you can. ❤

## The Basics

- Nextcloud Server version _(e.g., 29.x.x)_:
  - `33.0.6.2`

- Operating system and version _(e.g., Ubuntu 24.04)_:
  - Win11 25H2 Build 26200.9457

- Is this the first time you’ve seen this error? (Yes / No):
  - `No`

- When did this problem seem to first start?
  - We are activating/installing NC Client with an existing User (and files) on a Windows Workstation, inital Sync (VFS) is working but some time afterwards files and folders go missing or Windows errors out when traversing specific folders.  
Files are there on the server and intact.  
Only fix is to delete the hidden database file on the client to re-trigger the complete sync.  
We have also downgraded the client to 4.0.8 since we did not see the behavior there.

- Installation method _(e.g. AlO, NCP, Bare Metal/Archive, etc.)_
  - Official Windows MSI

- Are you using CloudfIare, mod\_security, or similar? _(Yes / No)_
  - `No`

### Summary of the issue you are facing:

[…]

### Steps to replicate it (hint: details matter!):

1. have existing user

2. install NC Client 33.0.x or 34.0.3

3. Start sync with VFS enabled

4. Sync completes

5. After X amount of time, some folders are broken and some files go missing - i.e. folder Novigrad

### Log entries

#### Nextcloud

Please provide the log entries from your Nextcloud log that are generated during the time of problem (via the _Copy raw_ option from _Administration settings-\>Logging_ screen or from your `nextcloud.log` located in your data directory). Feel free to use a pastebin/gist service if necessary.

```auto
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OC\\Authentication\\Token\\PublicKeyTokenProvider->getToken('djfs0ecqa8bn1a7...')\\n#2 /var/www/vhosts/amp.anexia-cloudstore.com/htdocs/lib/public/AppFramework/Db/TTransactional.php(45): OC\\Authentication\\Token\\PublicKeyTokenProvider->OC\\Authentication\\Token\\{closure}()\\n#3 /var/www/vhosts/amp.anexia-cloudstore.com/htdocs/lib/private/Authentication/Token/PublicKeyTokenProvider.php(239): OC\\Authentication\\Token\\PublicKeyTokenProvider->atomic(Object(Closure), Object(OC\\DB\\ConnectionAdapter))\\n#4 /var/www/vhosts/amp.anexia-cloudstore.com/htdocs/lib/private/Authentication/Token/Manager.php(160): OC\\Authentication\\Token\\PublicKeyTokenProvider->renewSessionToken('djfs0ecqa8bn1a7...', 'q5q0rdbanu05v8e...')\\n#5 /var/www/vhosts/amp.anexia-cloudstore.com/htdocs/lib/private/User/Session.php(912): OC\\Authentication\\Token\\Manager->renewSessionToken('djfs0ecqa8bn1a7...', 'q5q0rdbanu05v8e...')\\n#6 /var/www/vhosts/amp.anexia-cloudstore.com/htdocs/lib/base.php(1239): 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{"reqId":"u7JILzExSnbKYv7jR5Ch","level":3,"time":"2026-09-14T08:27:55+02:00","remoteAddr":"77.220.111.18","user":"--","app":"core","method":"GET","url":"/","scriptName":"/index.php","message":"Renewing session token failed: ","userAgent":"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/153.0.0.0 Safari/537.36","version":"33.0.6.2","exception":{"Exception":"OC\\Authentication\\Exceptions\\ExpiredTokenException","Message":"","Code":0,"Trace":[{"file":"/var/www/vhosts/amp.anexia-cloudstore.com/htdocs/lib/private/Authentication/Token/PublicKeyTokenProvider.php","line":177,"function":"checkToken","class":"OC\\Authentication\\Token\\PublicKeyTokenProvider","type":"->","args":[{" __class__":"OC\\Authentication\\Token\\PublicKeyToken","id":111629215}]},{"file":"/var/www/vhosts/amp.anexia-cloudstore.com/htdocs/lib/private/Authentication/Token/PublicKeyTokenProvider.php","line":240,"function":"getToken","class":"OC\\Authentication\\Token\\PublicKeyTokenProvider","type":"->","args":[" ***sensitive parameters replaced***"]},{"file":"/var/www/vhosts/amp.anexia-cloudstore.com/htdocs/lib/public/AppFramework/Db/TTransactional.php","line":45,"function":"OC\\Authentication\\Token\\{closure}","class":"OC\\Authentication\\Token\\PublicKeyTokenProvider","type":"->","args":[" ***sensitive parameters replaced***"]},{"file":"/var/www/vhosts/amp.anexia-cloudstore.com/htdocs/lib/private/Authentication/Token/PublicKeyTokenProvider.php","line":239,"function":"atomic","class":"OC\\Authentication\\Token\\PublicKeyTokenProvider","type":"->","args":[{" __class__":"Closure"},{" __class__":"OC\\DB\\ConnectionAdapter"}]},{"file":"/var/www/vhosts/amp.anexia-cloudstore.com/htdocs/lib/private/Authentication/Token/Manager.php","line":160,"function":"renewSessionToken","class":"OC\\Authentication\\Token\\PublicKeyTokenProvider","type":"->","args":[" ***sensitive parameters replaced***","dpsm2nbqrltei7ublghgi7vd9noau6ti"]},{"file":"/var/www/vhosts/amp.anexia-cloudstore.com/htdocs/lib/private/User/Session.php","line":912,"function":"renewSessionToken","class":"OC\\Authentication\\Token\\Manager","type":"->","args":[" ***sensitive parameters replaced***","dpsm2nbqrltei7ublghgi7vd9noau6ti"]},{"file":"/var/www/vhosts/amp.anexia-cloudstore.com/htdocs/lib/base.php","line":1239,"function":"loginWithCookie","class":"OC\\User\\Session","type":"->","args":[" ***sensitive parameters replaced***"]},{"file":"/var/www/vhosts/amp.anexia-cloudstore.com/htdocs/lib/base.php","line":1125,"function":"handleLogin","class":"OC","type":"::","args":[{" __class__":"OC\\AppFramework\\Http\\Request"}]},{"file":"/var/www/vhosts/amp.anexia-cloudstore.com/htdocs/index.php","line":25,"function":"handleRequest","class":"OC","type":"::","args":[]}],"File":"/var/www/vhosts/amp.anexia-cloudstore.com/htdocs/lib/private/Authentication/Token/PublicKeyTokenProvider.php","Line":225,"message":"Renewing session token failed: ","user":"488-58petritz-officepetritzgmailcom","exception":"{\"class\":\"OC\\Authentication\\Exceptions\\ExpiredTokenException\",\"message\":\"\",\"code\":0,\"file\":\"/var/www/vhosts/amp.anexia-cloudstore.com/htdocs/lib/private/Authentication/Token/PublicKeyTokenProvider.php:225\",\"trace\":\"#0 /var/www/vhosts/amp.anexia-cloudstore.com/htdocs/lib/private/Authentication/Token/PublicKeyTokenProvider.php(177): OC\\Authentication\\Token\\PublicKeyTokenProvider->checkToken(Object(OC\\Authentication\\Token\\PublicKeyToken))\\n#1 /var/www/vhosts/amp.anexia-cloudstore.com/htdocs/lib/private/Authentication/Token/PublicKeyTokenProvider.php(240): OC\\Authentication\\Token\\PublicKeyTokenProvider->getToken('nu49rgs2nd085vo...')\\n#2 /var/www/vhosts/amp.anexia-cloudstore.com/htdocs/lib/public/AppFramework/Db/TTransactional.php(45): OC\\Authentication\\Token\\PublicKeyTokenProvider->OC\\Authentication\\Token\\{closure}()\\n#3 /var/www/vhosts/amp.anexia-cloudstore.com/htdocs/lib/private/Authentication/Token/PublicKeyTokenProvider.php(239): OC\\Authentication\\Token\\PublicKeyTokenProvider->atomic(Object(Closure), Object(OC\\DB\\ConnectionAdapter))\\n#4 /var/www/vhosts/amp.anexia-cloudstore.com/htdocs/lib/private/Authentication/Token/Manager.php(160): OC\\Authentication\\Token\\PublicKeyTokenProvider->renewSessionToken('nu49rgs2nd085vo...', 'dpsm2nbqrltei7u...')\\n#5 /var/www/vhosts/amp.anexia-cloudstore.com/htdocs/lib/private/User/Session.php(912): OC\\Authentication\\Token\\Manager->renewSessionToken('nu49rgs2nd085vo...', 'dpsm2nbqrltei7u...')\\n#6 /var/www/vhosts/amp.anexia-cloudstore.com/htdocs/lib/base.php(1239): OC\\User\\Session->loginWithCookie('488-58petritz-o...', 'jewaivNQ8JsRNQ0...', 'nu49rgs2nd085vo...')\\n#7 /var/www/vhosts/amp.anexia-cloudstore.com/htdocs/lib/base.php(1125): OC::handleLogin(Object(OC\\AppFramework\\Http\\Request))\\n#8 /var/www/vhosts/amp.anexia-cloudstore.com/htdocs/index.php(25): OC::handleRequest()\\n#9 {main}\"}","CustomMessage":"Renewing session token failed: "}}

```

#### Web Browser

If the problem is related to the Web interface, open your browser inspector _Console_ and _Network_ tabs while refreshing (reloading) and reproducing the problem. Provide any relevant output/errors here that appear.

```auto

```

 ![image](https://help.nextcloud.com/uploads/default/original/3X/1/2/12bff3fbae30f941dc21294af9a3326194f7586e.png)

#### Web server / Reverse Proxy

The output of your Apache/nginx/system log in `/var/log/ ____ `:

```auto
PASTE HERE

```

### Configuration

#### Nextcloud

The output of `occ config:list system` or similar is best, but, if not possible, the contents of your `config.php` file from `/path/to/nextcloud` is fine (make sure to remove any identifiable information!):

```auto
PASTE HERE

```

#### Apps

The output of `occ app:list` (if possible).

### Tips for increasing the likelihood of a response

- Use the `preformatted text` formatting option in the editor for all log entries and configuration output.
- If screenshots are useful, feel free to include them.
  - If possible, also include key error output in text form so it can be searched for.

- Try to edit log output only minimally (if at all) so that it can be ran through analyzers / formatters by those trying to help you.
