Support intro
Sorry to hear you’re facing problems. 
The community help forum (help.nextcloud.com) is for home and non-enterprise users. Support is provided by other community members on a best effort / “as available” basis. All of those responding are volunteering their time to help you.
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Getting help
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Before clicking submit: Please check if your query is already addressed via the following resources:
- Official documentation (searchable and regularly updated)
- How to topics and FAQs
- Forum search
(Utilizing these existing resources is typically faster. It also helps reduce the load on our generous volunteers while elevating the signal to noise ratio of the forums otherwise arising from the same queries being posted repeatedly).
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The Basics
- Nextcloud Server version:
Nextcloud 33.0.2
- Operating system and version:
#1 SMP PREEMPT Debian 1:6.12.75-1+rpt1~bookworm (2026-03-11)
- Web server and version:
Server version: Apache/2.4.66 (Debian)
- Reverse proxy and version:
nginx version: openresty/1.27.1.2
- PHP version:
PHP 8.4.19 (cli) (built: Mar 16 2026 22:27:46) (NTS)
- Is this the first time you’ve seen this error? (Yes / No):
yes
- When did this problem seem to first start?
recently
- Installation method (e.g. AlO, NCP, Bare Metal/Archive, etc.)
OMV Container
- Are you using CloudfIare, mod_security, or similar? (Yes / No)
No
Summary of the issues you are facing:
Specifiying autostart on the settings of the client does not autostart it:
Steps to replicate it (hint: details matter!):
- Enable autostart
- Logoff and Logon
Log entries
Nextcloud
{"reqId":"SoI8ugD6gViW4ojR5ky8","level":3,"time":"2026-04-03T07:25:48+00:00","remoteAddr":"83.97.85.45","user":"johannes","app":"onlyoffice","method":"GET","url":"/apps/files_sharing/publicpreview/ZpkeKSZcn849Wwx?file=%2FOP-1+Manual+1.2+%28EN%29.pdf&x=32&y=32&mimeFallback=true&v=8b425e&a=0","scriptName":"/index.php","message":"Failed to download thumbnail","userAgent":"Mozilla/5.0 (X11; Linux x86_64; rv:149.0) Gecko/20100101 Firefox/149.0","version":"33.0.2.2","exception":{"Exception":"GuzzleHttp\\Exception\\ConnectException","Message":"cURL error 28: Connection timed out after 60002 milliseconds (see https://curl.haxx.se/libcurl/c/libcurl-errors.html) for https://cloud.kingma.ch/cache/files/data/conv_thumb_3499714562_1025/output.jpg/thumb_3499714562.jpg?md5=4Mpfu5N_DVKplh8-FHKikQ&expires=1775201989&shardkey=863781301&filename=thumb_3499714562.jpg","Code":0,"Trace":[{"file":"/var/www/html/3rdparty/guzzlehttp/guzzle/src/Handler/CurlFactory.php","line":207,"function":"createRejection","class":"GuzzleHttp\\Handler\\CurlFactory","type":"::","args":["*** sensitive parameters replaced ***"]},{"file":"/var/www/html/3rdparty/guzzlehttp/guzzle/src/Handler/CurlFactory.php","line":159,"function":"finishError","class":"GuzzleHttp\\Handler\\CurlFactory","type":"::","args":[{"__class__":"GuzzleHttp\\Handler\\CurlHandler"},"*** sensitive parameters replaced ***",{"__class__":"GuzzleHttp\\Handler\\CurlFactory"}]},{"file":"/var/www/html/3rdparty/guzzlehttp/guzzle/src/Handler/CurlHandler.php","line":47,"function":"finish","class":"GuzzleHttp\\Handler\\CurlFactory","type":"::","args":[{"__class__":"GuzzleHttp\\Handler\\CurlHandler"},"*** sensitive parameters replaced ***",{"__class__":"GuzzleHttp\\Handler\\CurlFactory"}]},{"file":"/var/www/html/3rdparty/guzzlehttp/guzzle/src/Middleware.php","line":142,"function":"__invoke","class":"GuzzleHttp\\Handler\\CurlHandler","type":"->","args":["*** sensitive parameters replaced ***","*** sensitive parameters replaced ***"]},{"file":"/var/www/html/lib/private/Http/Client/DnsPinMiddleware.php","line":110,"function":"{closure:{closure:GuzzleHttp\\Middleware::tap():137}:138}","class":"GuzzleHttp\\Middleware","type":"::","args":["*** sensitive parameters replaced ***"]},{"file":"/var/www/html/3rdparty/guzzlehttp/guzzle/src/PrepareBodyMiddleware.php","line":35,"function":"{closure:{closure:OC\\Http\\Client\\DnsPinMiddleware::addDnsPinning():104}:105}","class":"OC\\Http\\Client\\DnsPinMiddleware","type":"->","args":["*** sensitive parameters replaced ***"]},{"file":"/var/www/html/3rdparty/guzzlehttp/guzzle/src/Middleware.php","line":31,"function":"__invoke","class":"GuzzleHttp\\PrepareBodyMiddleware","type":"->","args":["*** sensitive parameters replaced ***","*** sensitive parameters replaced ***"]},{"file":"/var/www/html/3rdparty/guzzlehttp/guzzle/src/RedirectMiddleware.php","line":71,"function":"{closure:{closure:GuzzleHttp\\Middleware::cookies():28}:29}","class":"GuzzleHttp\\Middleware","type":"::","args":["*** sensitive parameters replaced ***"]},{"file":"/var/www/html/3rdparty/guzzlehttp/guzzle/src/Middleware.php","line":66,"function":"__invoke","class":"GuzzleHttp\\RedirectMiddleware","type":"->","args":["*** sensitive parameters replaced ***","*** sensitive parameters replaced ***"]},{"file":"/var/www/html/3rdparty/guzzlehttp/guzzle/src/HandlerStack.php","line":75,"function":"{closure:{closure:GuzzleHttp\\Middleware::httpErrors():60}:61}","class":"GuzzleHttp\\Middleware","type":"::","args":["*** sensitive parameters replaced ***"]},{"file":"/var/www/html/3rdparty/guzzlehttp/guzzle/src/Client.php","line":333,"function":"__invoke","class":"GuzzleHttp\\HandlerStack","type":"->","args":["*** sensitive parameters replaced ***","*** sensitive parameters replaced ***"]},{"file":"/var/www/html/3rdparty/guzzlehttp/guzzle/src/Client.php","line":169,"function":"transfer","class":"GuzzleHttp\\Client","type":"->","args":["*** sensitive parameters replaced ***","*** sensitive parameters replaced ***"]},{"file":"/var/www/html/3rdparty/guzzlehttp/guzzle/src/Client.php","line":189,"function":"requestAsync","class":"GuzzleHttp\\Client","type":"->","args":["*** sensitive parameters replaced ***"]},{"file":"/var/www/html/lib/private/Http/Client/Client.php","line":219,"function":"request","class":"GuzzleHttp\\Client","type":"->","args":["*** sensitive parameters replaced ***","*** sensitive parameters replaced ***",{"verify":"/var/www/html/resources/config/ca-bundle.crt","timeout":60,"version":"2.0","curl":{"84":4},"nextcloud":{"allow_local_address":true},"0":"And 2 more entries, set log level to debug to see all entries"}]},{"file":"/var/www/html/custom_apps/onlyoffice/lib/DocumentService.php","line":410,"function":"get","class":"OC\\Http\\Client\\Client","type":"->","args":["*** sensitive parameters replaced ***"]},{"file":"/var/www/html/custom_apps/onlyoffice/lib/Preview.php","line":273,"function":"request","class":"OCA\\Onlyoffice\\DocumentService","type":"->","args":["*** sensitive parameters replaced ***"]},{"file":"/var/www/html/lib/private/Preview/GeneratorHelper.php","line":25,"function":"getThumbnail","class":"OCA\\Onlyoffice\\Preview","type":"->","args":[{"__class__":"OC\\Files\\Node\\File"},4096,4096]},{"file":"/var/www/html/lib/private/Preview/Generator.php","line":381,"function":"getThumbnail","class":"OC\\Preview\\GeneratorHelper","type":"->","args":[{"__class__":"OCA\\Onlyoffice\\Preview"},{"__class__":"OC\\Files\\Node\\File"},4096,4096]},{"file":"/var/www/html/lib/private/Preview/Generator.php","line":335,"function":"generateProviderPreview","class":"OC\\Preview\\Generator","type":"->","args":[{"__class__":"OC\\Files\\Node\\File"},4096,4096,false,true,"application/pdf",null]},{"file":"/var/www/html/lib/private/Preview/Generator.php","line":126,"function":"getMaxPreview","class":"OC\\Preview\\Generator","type":"->","args":[[],{"__class__":"OC\\Files\\Node\\File"},"application/pdf",null]},{"file":"/var/www/html/lib/private/Preview/Generator.php","line":94,"function":"generatePreviews","class":"OC\\Preview\\Generator","type":"->","args":[{"__class__":"OC\\Files\\Node\\File"},[{"width":32,"height":32,"crop":true,"mode":"fill"}],"application/pdf",true]},{"file":"/var/www/html/lib/private/PreviewManager.php","line":166,"function":"getPreview","class":"OC\\Preview\\Generator","type":"->","args":[{"__class__":"OC\\Files\\Node\\File"},32,32,true,"fill",null,true]},{"file":"/var/www/html/apps/files_sharing/lib/Controller/PublicPreviewController.php","line":129,"function":"getPreview","class":"OC\\PreviewManager","type":"->","args":[{"__class__":"OC\\Files\\Node\\File"},32,32,true]},{"file":"/var/www/html/lib/private/AppFramework/Http/Dispatcher.php","line":205,"function":"getPreview","class":"OCA\\Files_Sharing\\Controller\\PublicPreviewController","type":"->","args":["ZpkeKSZcn849Wwx",{"__class__":"OC\\Files\\Node\\File"},32,32,false,true]},{"file":"/var/www/html/lib/private/AppFramework/Http/Dispatcher.php","line":118,"function":"executeController","class":"OC\\AppFramework\\Http\\Dispatcher","type":"->","args":[{"__class__":"OCA\\Files_Sharing\\Controller\\PublicPreviewController"},"getPreview"]},{"file":"/var/www/html/lib/private/AppFramework/App.php","line":153,"function":"dispatch","class":"OC\\AppFramework\\Http\\Dispatcher","type":"->","args":[{"__class__":"OCA\\Files_Sharing\\Controller\\PublicPreviewController"},"getPreview"]},{"file":"/var/www/html/lib/private/Route/Router.php","line":321,"function":"main","class":"OC\\AppFramework\\App","type":"::","args":["OCA\\Files_Sharing\\Controller\\PublicPreviewController","getPreview",{"__class__":"OC\\AppFramework\\DependencyInjection\\DIContainer"},{"_route":"files_sharing.publicpreview.getpreview","token":"ZpkeKSZcn849Wwx"}]},{"file":"/var/www/html/lib/base.php","line":1155,"function":"match","class":"OC\\Route\\Router","type":"->","args":["/apps/files_sharing/publicpreview/ZpkeKSZcn849Wwx"]},{"file":"/var/www/html/index.php","line":25,"function":"handleRequest","class":"OC","type":"::","args":[]}],"File":"/var/www/html/3rdparty/guzzlehttp/guzzle/src/Handler/CurlFactory.php","Line":277,"message":"Failed to download thumbnail","exception":"{\"class\":\"GuzzleHttp\\Exception\\ConnectException\",\"message\":\"cURL error 28: Connection timed out after 60002 milliseconds (see https://curl.haxx.se/libcurl/c/libcurl-errors.html) for https://cloud.kingma.ch/cache/files/data/conv_thumb_3499714562_1025/output.jpg/thumb_3499714562.jpg?md5=4Mpfu5N_DVKplh8-FHKikQ&expires=1775201989&shardkey=863781301&filename=thumb_3499714562.jpg\",\"code\":0,\"file\":\"/var/www/html/3rdparty/guzzlehttp/guzzle/src/Handler/CurlFactory.php:277\",\"trace\":\"#0 /var/www/html/3rdparty/guzzlehttp/guzzle/src/Handler/CurlFactory.php(207): GuzzleHttp\\Handler\\CurlFactory::createRejection(Object(GuzzleHttp\\Handler\\EasyHandle), Array)\\n#1 /var/www/html/3rdparty/guzzlehttp/guzzle/src/Handler/CurlFactory.php(159): GuzzleHttp\\Handler\\CurlFactory::finishError(Object(GuzzleHttp\\Handler\\CurlHandler), Object(GuzzleHttp\\Handler\\EasyHandle), Object(GuzzleHttp\\Handler\\CurlFactory))\\n#2 /var/www/html/3rdparty/guzzlehttp/guzzle/src/Handler/CurlHandler.php(47): GuzzleHttp\\Handler\\CurlFactory::finish(Object(GuzzleHttp\\Handler\\CurlHandler), Object(GuzzleHttp\\Handler\\EasyHandle), Object(GuzzleHttp\\Handler\\CurlFactory))\\n#3 /var/www/html/3rdparty/guzzlehttp/guzzle/src/Middleware.php(142): GuzzleHttp\\Handler\\CurlHandler->__invoke(Object(GuzzleHttp\\Psr7\\Request), Array)\\n#4 /var/www/html/lib/private/Http/Client/DnsPinMiddleware.php(110): GuzzleHttp\\Middleware::{closure:{closure:GuzzleHttp\\Middleware::tap():137}:138}(Object(GuzzleHttp\\Psr7\\Request), Array)\\n#5 /var/www/html/3rdparty/guzzlehttp/guzzle/src/PrepareBodyMiddleware.php(35): OC\\Http\\Client\\DnsPinMiddleware->{closure:{closure:OC\\Http\\Client\\DnsPinMiddleware::addDnsPinning():104}:105}(Object(GuzzleHttp\\Psr7\\Request), Array)\\n#6 /var/www/html/3rdparty/guzzlehttp/guzzle/src/Middleware.php(31): GuzzleHttp\\PrepareBodyMiddleware->__invoke(Object(GuzzleHttp\\Psr7\\Request), Array)\\n#7 /var/www/html/3rdparty/guzzlehttp/guzzle/src/RedirectMiddleware.php(71): GuzzleHttp\\Middleware::{closure:{closure:GuzzleHttp\\Middleware::cookies():28}:29}(Object(GuzzleHttp\\Psr7\\Request), Array)\\n#8 /var/www/html/3rdparty/guzzlehttp/guzzle/src/Middleware.php(66): GuzzleHttp\\RedirectMiddleware->__invoke(Object(GuzzleHttp\\Psr7\\Request), Array)\\n#9 /var/www/html/3rdparty/guzzlehttp/guzzle/src/HandlerStack.php(75): GuzzleHttp\\Middleware::{closure:{closure:GuzzleHttp\\Middleware::httpErrors():60}:61}(Object(GuzzleHttp\\Psr7\\Request), Array)\\n#10 /var/www/html/3rdparty/guzzlehttp/guzzle/src/Client.php(333): GuzzleHttp\\HandlerStack->__invoke(Object(GuzzleHttp\\Psr7\\Request), Array)\\n#11 /var/www/html/3rdparty/guzzlehttp/guzzle/src/Client.php(169): GuzzleHttp\\Client->transfer(Object(GuzzleHttp\\Psr7\\Request), Array)\\n#12 /var/www/html/3rdparty/guzzlehttp/guzzle/src/Client.php(189): GuzzleHttp\\Client->requestAsync('get', Object(GuzzleHttp\\Psr7\\Uri), Array)\\n#13 /var/www/html/lib/private/Http/Client/Client.php(219): GuzzleHttp\\Client->request('get', 'https://cloud.k...', Array)\\n#14 /var/www/html/custom_apps/onlyoffice/lib/DocumentService.php(410): OC\\Http\\Client\\Client->get('https://cloud.k...', Array)\\n#15 /var/www/html/custom_apps/onlyoffice/lib/Preview.php(273): OCA\\Onlyoffice\\DocumentService->request('https://cloud.k...')\\n#16 /var/www/html/lib/private/Preview/GeneratorHelper.php(25): OCA\\Onlyoffice\\Preview->getThumbnail(Object(OC\\Files\\Node\\File), 4096, 4096)\\n#17 /var/www/html/lib/private/Preview/Generator.php(381): OC\\Preview\\GeneratorHelper->getThumbnail(Object(OCA\\Onlyoffice\\Preview), Object(OC\\Files\\Node\\File), 4096, 4096)\\n#18 /var/www/html/lib/private/Preview/Generator.php(335): OC\\Preview\\Generator->generateProviderPreview(Object(OC\\Files\\Node\\File), 4096, 4096, false, true, 'application/pdf', NULL)\\n#19 /var/www/html/lib/private/Preview/Generator.php(126): OC\\Preview\\Generator->getMaxPreview(Array, Object(OC\\Files\\Node\\File), 'application/pdf', NULL)\\n#20 /var/www/html/lib/private/Preview/Generator.php(94): OC\\Preview\\Generator->generatePreviews(Object(OC\\Files\\Node\\File), Array, 'application/pdf', true)\\n#21 /var/www/html/lib/private/PreviewManager.php(166): OC\\Preview\\Generator->getPreview(Object(OC\\Files\\Node\\File), 32, 32, true, 'fill', NULL, true)\\n#22 /var/www/html/apps/files_sharing/lib/Controller/PublicPreviewController.php(129): OC\\PreviewManager->getPreview(Object(OC\\Files\\Node\\File), 32, 32, true)\\n#23 /var/www/html/lib/private/AppFramework/Http/Dispatcher.php(205): OCA\\Files_Sharing\\Controller\\PublicPreviewController->getPreview('ZpkeKSZcn849Wwx', Object(OC\\Files\\Node\\File), 32, 32, false, true)\\n#24 /var/www/html/lib/private/AppFramework/Http/Dispatcher.php(118): OC\\AppFramework\\Http\\Dispatcher->executeController(Object(OCA\\Files_Sharing\\Controller\\PublicPreviewController), 'getPreview')\\n#25 /var/www/html/lib/private/AppFramework/App.php(153): OC\\AppFramework\\Http\\Dispatcher->dispatch(Object(OCA\\Files_Sharing\\Controller\\PublicPreviewController), 'getPreview')\\n#26 /var/www/html/lib/private/Route/Router.php(321): OC\\AppFramework\\App::main('OCA\\\\Files_Shari...', 'getPreview', Object(OC\\AppFramework\\DependencyInjection\\DIContainer), Array)\\n#27 /var/www/html/lib/base.php(1155): OC\\Route\\Router->match('/apps/files_sha...')\\n#28 /var/www/html/index.php(25): OC::handleRequest()\\n#29 {main}\"}","CustomMessage":"Failed to download thumbnail"}}
Web Browser
Apps
Enabled:
- activity: 6.0.0
- admin_audit: 1.23.0
- bookmarks: 16.1.3
- brewmemo: 0.6.0
- bruteforcesettings: 6.0.0
- calendar: 6.2.2
- circles: 33.0.0
- cloud_federation_api: 1.17.0
- comments: 1.23.0
- contacts: 8.4.3
- contactsinteraction: 1.14.1
- cookbook: 0.11.6
- dashboard: 7.13.0
- dav: 1.36.0
- encryption: 2.21.0
- end_to_end_encryption: 2.0.2
- federatedfilesharing: 1.23.0
- federation: 1.23.0
- files: 2.5.0
- files_downloadlimit: 5.1.0
- files_external: 1.25.1
- files_pdfviewer: 6.0.0
- files_reminders: 1.6.0
- files_sharing: 1.25.2
- files_trashbin: 1.23.0
- files_versions: 1.26.0
- firstrunwizard: 6.0.0
- fulltextsearch: 33.0.0
- groupfolders: 21.0.6
- logreader: 6.0.0
- lookup_server_connector: 1.21.0
- nextcloud_announcements: 5.0.0
- notes: 4.13.1
- notifications: 6.0.0
- oauth2: 1.21.0
- onlyoffice: 10.0.0
- password_policy: 5.0.0
- photos: 6.0.0
- privacy: 5.0.0
- profile: 1.2.0
- provisioning_api: 1.23.0
- recommendations: 6.0.0
- related_resources: 4.0.0
- serverinfo: 5.0.0
- settings: 1.16.0
- sharebymail: 1.23.0
- support: 5.0.0
- survey_client: 5.0.0
- suspicious_login: 11.0.0
- systemtags: 1.23.0
- text: 7.0.0
- theming: 2.8.0
- twofactor_backupcodes: 1.22.0
- twofactor_nextcloud_notification: 7.0.0
- twofactor_totp: 15.0.0
- updatenotification: 1.23.0
- uppush: 2.4.0
- user_status: 1.13.0
- viewer: 6.0.0
- weather_status: 1.13.0
- webhook_listeners: 1.5.0
- workflowengine: 2.15.0
Disabled:- app_api: 33.0.0 (installed 32.0.0)
- camerarawpreviews: 0.8.8 (installed 0.8.8)
- keeweb: 0.6.22 (installed 0.6.22)
- richdocuments: 10.1.2 (installed 10.1.2)
- testing: 1.23.0
- user_ldap: 1.24.0 (installed 1.22.0)
