On Fedora AppImage version 33.0.2 encrypted folders report "could not be located" error for each file

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### Steps to reproduce
1. On Hub Winter 33.0.2 activate app End-to-End Encryption Version 2.1.0, AGPL-licensed
2. Install Nextcloud Desktop 33.0.2 on Windows 11
3. Download and start Nextcloud AppImage 33.0.2 on Fedora 43 KDE Plasma
4. Setup end to end encryption on both with the same passphrse
5. Create a folder and mark it as encrypted
6. Copy files to the encrypted folder
7. Create a new file on the Windows client

### Expected behaviour
Sync should commence on the Fedora 43 AppImage

### Actual behaviour
A could not be located error is displayed on the Fedora 43 AppImage installation

### Server configuration

https://office.king.ma/ocs/v2.php/apps/serverinfo/api/v1/info

**Operating system:**
Debian
**Web server:**
Apache
**Database:**
Mariadb
**PHP version:**
8.40.2
**Nextcloud version:** (see Nextcloud admin page)
33.0.2.2
**Updated from an older Nextcloud/ownCloud or fresh install:**

**Where did you install Nextcloud from:**
docker
**Signing status:**

Signing status

```
Login as admin user into your Nextcloud and access
http://example.com/index.php/settings/integrity/failed
paste the results here.
```
No errors have been found.

**List of activated apps:**

apache2handler
apcu
bcmath
Core
ctype
curl
date
dom
exif
fileinfo
filter
ftp
gd
gmp
hash
iconv
igbinary
imagick
intl
json
ldap
libxml
mbstring
memcached
mysqlnd
openssl
pcntl
pcre
PDO
pdo_mysql
pdo_pgsql
pdo_sqlite
Phar
posix
random
redis
Reflection
session
SimpleXML
sodium
SPL
sqlite3
standard
sysvsem
tokenizer
xml
xmlreader
xmlwriter
Zend OPcache
zip
zlib

```
**Nextcloud configuration:**

Config report

```
{
"system": {
"instanceid": "***REMOVED SENSITIVE VALUE***",
"version": "33.0.2.2",
"loglevel": 3,
"log_rotate_size": 262144,
"maintenance": false,
"maintenance_window_start": 3,
"default_locale": "DE_CH",
"default_phone_region": "CH",
"datadirectory": "***REMOVED SENSITIVE VALUE***",
"memcache.local": "\\OC\\Memcache\\APCu",
"memcache.distributed": "\\OC\\Memcache\\Redis",
"memcache.locking": "\\OC\\Memcache\\Redis",
"redis": {
"host": "***REMOVED SENSITIVE VALUE***",
"password": "***REMOVED SENSITIVE VALUE***",
"port": 6379
},
"upgrade.disable-web": true,
"passwordsalt": "***REMOVED SENSITIVE VALUE***",
"secret": "***REMOVED SENSITIVE VALUE***",
"dbtype": "mysql",
"mysql.utf8mb4": true,
"dbhost": "***REMOVED SENSITIVE VALUE***",
"dbport": "",
"dbuser": "***REMOVED SENSITIVE VALUE***",
"dbname": "***REMOVED SENSITIVE VALUE***",
"dbpassword": "***REMOVED SENSITIVE VALUE***",
"dbtableprefix": "oc_",
"htaccess.RewriteBase": "\/",
"trusted_domains": [
"srv-nas-pi.kingma:8080",
"office.kingma.ch",
"office.king.ma",
"cloud.kingma.ch",
"cloud.king.ma"
],
"overwrite.cli.url": "https:\/\/office.kingma.ch",
"overwriteprotocol": "https",
"apps_paths": [
{
"path": "\/var\/www\/html\/apps",
"url": "\/apps",
"writable": false
},
{
"path": "\/var\/www\/html\/custom_apps",
"url": "\/custom_apps",
"writable": true
}
],
"mail_smtpmode": "smtp",
"mail_sendmailmode": "smtp",
"mail_from_address": "***REMOVED SENSITIVE VALUE***",
"mail_domain": "***REMOVED SENSITIVE VALUE***",
"mail_smtphost": "***REMOVED SENSITIVE VALUE***",
"mail_smtpport": "465",
"mail_smpttimeout": 30,
"installed": true,
"mail_smtpauth": true,
"mail_smtpname": "***REMOVED SENSITIVE VALUE***",
"mail_smtppassword": "***REMOVED SENSITIVE VALUE***",
"mail_smtpsecure": "ssl",
"app_install_overwrite": [],
"serverid": 9
}
}

```

**Are you using external storage, if yes which one:** local/smb/sftp/...
no
**Are you using encryption:** yes/no
no
**Are you using an external user-backend, if yes which one:** LDAP/ActiveDirectory/Webdav/...
no
### Client configuration
**Browser:**
Browser was not used/involved
**Operating system:**
Fedora 43 KDE Plasma
### Logs

#### Web server error log

Web server error log

```
Webserver error log does not contain relevant data
```

#### Nextcloud log (data/nextcloud.log)

Nextcloud log

```
Nextcloud server log does not contain relevant data
```

#### Browser log

Browser log

```
Browser is not involved
```

```
Fedora 43 AppImage 33.0.2 Nextcloud AppImage client log `~/config/Nextcloud/logs`
```
026-04-15 12:39:27:358 [ warning nextcloud.sync.credentials.webflow /home/user/src/gui/creds/webflowcredentials.cpp:214 ]: "Error transferring https://office.kingma.ch/remote.php/dav/files/johannes/Secret/Boxcryptor Classic Manual.pdf - server replied: Not Found"
2026-04-15 12:39:27:358 [ warning nextcloud.sync.propagator.download /home/user/src/libsync/propagatedownload.cpp:826 ]: server replied 404, assuming file was deleted
2026-04-15 12:39:27:359 [ info nextcloud.sync.database /home/user/src/common/syncjournaldb.cpp:2286 ]: Setting blacklist entry for "Secret/Boxcryptor Classic Manual.pdf" 4 "File with name /Secret/Boxcryptor Classic Manual.pdf could not be located" 1776249567 0 1425821800 "c9db6e739cfd847e6b97bf6c78672d30" "" 0
2026-04-15 12:39:27:359 [ warning nextcloud.sync.propagator /home/user/src/libsync/owncloudpropagator.cpp:211 ]: escalating soft error on "Secret/Boxcryptor Classic Manual.pdf" to normal error, 404
2026-04-15 12:39:27:359 [ warning nextcloud.sync.propagator /home/user/src/libsync/owncloudpropagator.cpp:280 ]: Could not complete propagation of "Secret/Boxcryptor Classic Manual.pdf" by OCC::PropagateDownloadFile(0x55e119ae8fb0) with status OCC::SyncFileItem::NormalError and error: "File with name /Secret/Boxcryptor Classic Manual.pdf could not be located"
2026-04-15 12:39:27:359 [ warning nextcloud.gui.activity /home/user/src/gui/tray/usermodel.cpp:1155 ]: Item "Secret/Boxcryptor Classic Manual.pdf" retrieved resulted in "File with name /Secret/Boxcryptor Classic Manual.pdf could not be located"
2026-04-15 12:39:27:359 [ info nextcloud.gui.activity /home/user/src/gui/tray/usermodel.cpp:1101 ]: Item "Secret/Boxcryptor Classic Manual.pdf" retrieved resulted in error "File with name /Secret/Boxcryptor Classic Manual.pdf could not be located"
2026-04-15 12:39:27:359 [ warning nextcloud.gui.activity /home/user/src/gui/tray/activitylistmodel.cpp:611 ]: Error successfully added to the notification list: OCC::ActivityListModel::ErrorType::SyncError "Secret/Boxcryptor Classic Manual.pdf" "File with name /Secret/Boxcryptor Classic Manual.pdf could not be located" OCC::SyncResult::Undefined OCC::SyncFileItem::NormalError
2026-04-15 12:39:27:360 [ warning nextcloud.sync.localdiscoverytracker /home/user/src/libsync/localdiscoverytracker.cpp:70 ]: inserted error item "Secret/Boxcryptor Classic Manual.pdf"
2026-04-15 12:39:27:364 [ info nextcloud.sync.propagator /build-client/src/libsync/nextcloudsync_autogen/EWIEGA46WW/../../../../../home/user/src/libsync/owncloudpropagator.h:213 ]: Starting CSyncEnums::CSYNC_INSTRUCTION_NEW propagation of "Secret/IMG_20240410_104043_DRO - Kopie.jpg" by OCC::PropagateDownloadFile(0x55e119ae8fb0)
2026-04-15 12:39:27:364 [ info nextcloud.sync.accessmanager /home/user/src/libsync/accessmanager.cpp:72 ]: 2 "" "https://office.kingma.ch/remote.php/dav/files/johannes/Secret/IMG_20240410_104043_DRO - Kopie.jpg" has X-Request-ID "a8478f13-8857-49fb-8fbf-ea927e12de94"
2026-04-15 12:39:27:364 [ info nextcloud.sync.networkjob /home/user/src/libsync/abstractnetworkjob.cpp:382 ]: OCC::GETFileJob created for "https://office.kingma.ch" + "/Secret/IMG_20240410_104043_DRO - Kopie.jpg" "OCC::PropagateDownloadFile"
```

Complete server configuration
```

ok
200
OK




33.0.2.2
none
yes
yes
\OC\Memcache\APCu
\OC\Memcache\Redis
yes
\OC\Memcache\Redis
no
470496575488

1.099609375
0.69091796875
0.70751953125

4
8256512
2365440
4193280
3074048


2
0
34748
6
2
4
0
39649315
21370


7
0
0
7
0
0
7
0
0
7



Apache/2.4.66 (Debian)

8.4.20
536870912
3600
536870912
60

1




105348976
28868752
0
0


33554432
15307912
18246520
106605


2850
5486
16229
6180159
1776247852
0
0
0
0
2865
0
0
99.953663450118


1
1
5
5
6
8388592
7233784




16411
0
416787
1642
2009
589
0
0
0
1776247852
739776
mmap


1
33554304
32662072



apache2handler
apcu
bcmath
Core
ctype
curl
date
dom
exif
fileinfo
filter
ftp
gd
gmp
hash
iconv
igbinary
imagick
intl
json
ldap
libxml
mbstring
memcached
mysqlnd
openssl
pcntl
pcre
PDO
pdo_mysql
pdo_pgsql
pdo_sqlite
Phar
posix
random
redis
Reflection
session
SimpleXML
sodium
SPL
sqlite3
standard
sysvsem
tokenizer
xml
xmlreader
xmlwriter
Zend OPcache
zip
zlib




mysql
12.2.2
195493888



0
2
2
2
2
2
2
2

```