# \#antivirus **URL:** https://help.nextcloud.com/tag/antivirus/102.md [Latest](https://help.nextcloud.com/latest.md) · [Categories](https://help.nextcloud.com/categories.md) · [Tags](https://help.nextcloud.com/tags.md) --- ## [Nextcloud Sicherheit - Schadsoftware, AntiVirus, Benutzer einschränken](https://help.nextcloud.com/t/nextcloud-sicherheit-schadsoftware-antivirus-benutzer-einschranken/245509)
**Author:** [@spooner](https://help.nextcloud.com/u/spooner)\ **Replies:** 6\ **Last updated:** [June 6, 2026, 8:04pm UTC](https://help.nextcloud.com/t/nextcloud-sicherheit-schadsoftware-antivirus-benutzer-einschranken/245509 "2026-06-06T20:04:05Z")
Hallo Zusammen, ich bin gerade bei der Planung für eine neue Nextcloud einzurichten und dabei kam ein Gedanke, denn ich aus der MS365 Welt kenne. Microsoft verhindert, dass man Schadsoftware in Teams oder SharePoint ho… --- ## [Connection with 2 ICAP servers](https://help.nextcloud.com/t/connection-with-2-icap-servers/244701)
**Author:** [@spira](https://help.nextcloud.com/u/spira)\ **Replies:** 0\ **Last updated:** [May 21, 2026, 1:06pm UTC](https://help.nextcloud.com/t/connection-with-2-icap-servers/244701 "2026-05-21T13:06:14Z")
Hello, I need to connect nextcloud to with 2 different ICAP services (kaspersky and searchinform). “FIles\_antivirus” addon can make perfect connection but only with one ICAP service. Services have different settings, can… --- ## [ClamAV is not working](https://help.nextcloud.com/t/clamav-is-not-working/200375)
**Author:** [@0giv](https://help.nextcloud.com/u/0giv)\ **Replies:** 1\ **Last updated:** [August 9, 2024, 6:00pm UTC](https://help.nextcloud.com/t/clamav-is-not-working/200375 "2024-08-09T18:00:24Z")
When I press Save, it says Saved, but I cannot see in my logs that it scanned the files I uploaded. I even added an infected file, but no log or action was made. --- ## [AWS SDK api-2.json.php suspiciuos](https://help.nextcloud.com/t/aws-sdk-api-2-json-php-suspiciuos/196805)
**Author:** [@przemkow](https://help.nextcloud.com/u/przemkow)\ **Replies:** 4\ **Last updated:** [July 4, 2024, 6:25am UTC](https://help.nextcloud.com/t/aws-sdk-api-2-json-php-suspiciuos/196805 "2024-07-04T06:25:42Z")
Nextcloud version (eg, 29.0.5): 29.0.3 Operating system and version (eg, Ubuntu 29.04): Linux 6.5.0-41-generic x86\_64 Apache or nginx version (eg, Apache 2.4.25): Apache/2 (hosting, no more info) PHP version (eg, 8.3… --- ## [Getting errors from files\_antivirus app](https://help.nextcloud.com/t/getting-errors-from-files-antivirus-app/191971)
**Author:** [@ncbzo](https://help.nextcloud.com/u/ncbzo)\ **Replies:** 4\ **Last updated:** [June 7, 2024, 9:06am UTC](https://help.nextcloud.com/t/getting-errors-from-files-antivirus-app/191971 "2024-06-07T09:06:09Z")
Support introSorry to hear you’re facing problems :slightly\_frowning\_face: help.nextcloud.com is for home/non-enterprise users. If you’re running a business, paid support can be accessed via portal.nextcloud.com where … --- ## [AntiVirus for Files No Longer Scanning Uploads](https://help.nextcloud.com/t/antivirus-for-files-no-longer-scanning-uploads/169489)
**Author:** [@gerowen](https://help.nextcloud.com/u/gerowen)\ **Replies:** 5\ **Last updated:** [May 18, 2024, 6:48pm UTC](https://help.nextcloud.com/t/antivirus-for-files-no-longer-scanning-uploads/169489 "2024-05-18T18:48:45Z")
Nextcloud version: 27.0.2 Operating system: Debian 12 Install method: Manual install on my own Apache and MariaDB/MySQL setup I’ve been hosting my own Nextcloud on this machine for years and I noticed recently that th… --- ## [Organize simultaneous connection of several ICAP servers](https://help.nextcloud.com/t/organize-simultaneous-connection-of-several-icap-servers/188799)
**Author:** [@zm56](https://help.nextcloud.com/u/zm56)\ **Replies:** 1\ **Last updated:** [April 25, 2024, 9:18am UTC](https://help.nextcloud.com/t/organize-simultaneous-connection-of-several-icap-servers/188799 "2024-04-25T09:18:48Z")
Hi everyone! :wink: There was a need to configure Nextcloud to work with Kaspersky via ICAP and another DLP system. Is it possible to organize simultaneous connection of several ICAP servers? Through the antivirus modul… --- ## [Keine Nachricht an den Nutzer bei gefundenem Virus](https://help.nextcloud.com/t/keine-nachricht-an-den-nutzer-bei-gefundenem-virus/185604)
**Author:** [@Waschbaer](https://help.nextcloud.com/u/Waschbaer)\ **Replies:** 0\ **Last updated:** [March 18, 2024, 6:50am UTC](https://help.nextcloud.com/t/keine-nachricht-an-den-nutzer-bei-gefundenem-virus/185604 "2024-03-18T06:50:19Z")
Hallo zusammen, ich habe meine NextCloud aufgesetzt und sie läuft auch super. Um zu testen, ob auch der Virusschutz (ClamAV mit Antivirus for Files) funktioniert, habe ich eine Eicar-Datei genutzt. Der Virus wurde erf… --- ## [How to use Antivirus app(clamav)](https://help.nextcloud.com/t/how-to-use-antivirus-app-clamav/31560)
**Author:** [@zoo3](https://help.nextcloud.com/u/zoo3)\ **Replies:** 7\ **Last updated:** [February 21, 2024, 5:13pm UTC](https://help.nextcloud.com/t/how-to-use-antivirus-app-clamav/31560 "2024-02-21T17:13:40Z")
I’m installed antivius app from app store. First, in the case of mode is Executable, I have been pointed out that there is no /usr/bin/clamscan when I look at the log. But actually there is clamscan there. I can also r… --- ## [TypeError: Argument 3 passed to OC\\Activity\\Event::setObject() must be of the type string, null given, called in /config/www/nextcloud/apps/files\_antivirus/lib/Item.php](https://help.nextcloud.com/t/typeerror-argument-3-passed-to-oc-activity-event-setobject-must-be-of-the-type-string-null-given-called-in-config-www-nextcloud-apps-files-antivirus-lib-item-php/142511)
**Author:** [@idra](https://help.nextcloud.com/u/idra)\ **Replies:** 2\ **Last updated:** [June 29, 2023, 6:16am UTC](https://help.nextcloud.com/t/typeerror-argument-3-passed-to-oc-activity-event-setobject-must-be-of-the-type-string-null-given-called-in-config-www-nextcloud-apps-files-antivirus-lib-item-php/142511 "2023-06-29T06:16:28Z")
Nextcloud version: 24.0.2 PHP version: 7.4.26 Operating system and version: linuxserver-docker (Alpine 3.12) ClamAV: Cisco Talos ClamAV Docker \[core\] Fehler: TypeError: Argument 3 passed to OC\\Activity\\Event::setObj… --- ## [NextCloud - Icap](https://help.nextcloud.com/t/nextcloud-icap/160555)
**Author:** [@greyfool\_greyfool](https://help.nextcloud.com/u/greyfool_greyfool)\ **Replies:** 2\ **Last updated:** [April 20, 2023, 6:47am UTC](https://help.nextcloud.com/t/nextcloud-icap/160555 "2023-04-20T06:47:22Z")
Can you tell me if NextCloud supports icap integration with kaspersky antivirus or only HTTP? Can NextCloud transfer files to Kaspersky anti-virus icap for verification? --- ## [\[files\_antivirus\] Fatal error: Not Checked. No matching rule for exit code -1 / What to do?](https://help.nextcloud.com/t/files-antivirus-fatal-error-not-checked-no-matching-rule-for-exit-code-1-what-to-do/136273)
**Author:** [@kallle](https://help.nextcloud.com/u/kallle)\ **Replies:** 0\ **Last updated:** [March 25, 2022, 2:59pm UTC](https://help.nextcloud.com/t/files-antivirus-fatal-error-not-checked-no-matching-rule-for-exit-code-1-what-to-do/136273 "2022-03-25T14:59:53Z")
Hello, Nextcloud logs lots of errors like: “\[files\_antivirus\] Fatal: Not Checked. No matching rule for exit code -1. Please check antivirus rules configuration. File: ### …”. What do I have to configure where so that … --- ## [How to suppress ClamAV's swap memory](https://help.nextcloud.com/t/how-to-suppress-clamavs-swap-memory/126460)
**Author:** [@zoo3](https://help.nextcloud.com/u/zoo3)\ **Replies:** 0\ **Last updated:** [November 1, 2021, 1:20am UTC](https://help.nextcloud.com/t/how-to-suppress-clamavs-swap-memory/126460 "2021-11-01T01:20:36Z")
I rent a server with 4GB memory and install and run Nextcloud only. I am having a lot of trouble with ClamAV’s memory usage. The number of user accounts in my NC is very small. I am often warned about the amount of swap … --- ## [Files antivirus Regel für "-1" hinzufügen?](https://help.nextcloud.com/t/files-antivirus-regel-fur-1-hinzufugen/124924)
**Author:** [@kallle](https://help.nextcloud.com/u/kallle)\ **Replies:** 0\ **Last updated:** [October 6, 2021, 4:28pm UTC](https://help.nextcloud.com/t/files-antivirus-regel-fur-1-hinzufugen/124924 "2021-10-06T16:28:00Z")
Nextcloud protokolliert jede Menge Fehler wie: “WARNING: Failed to write a chunk. Check if Stream Length matches StreamMaxLength in anti virus daemon settings” und auch “FATAL: Not Checked. No matching rule for exit c… --- ## [Does virus scanner app work with E2EE enabled?](https://help.nextcloud.com/t/does-virus-scanner-app-work-with-e2ee-enabled/115402)
**Author:** [@probinso](https://help.nextcloud.com/u/probinso)\ **Replies:** 0\ **Last updated:** [May 3, 2021, 5:13pm UTC](https://help.nextcloud.com/t/does-virus-scanner-app-work-with-e2ee-enabled/115402 "2021-05-03T17:13:40Z")
Is the antivirus scanner set up to scan files on disc or in memory prior to being on disk? I assume that If the antivirus scanner is designed to scan on disk, that antivirus app functionally does nothing if end-to-end en… --- ## [Does OS Antivirus like Kaspersky Endpoint Security for Linux prevent upload of infected files](https://help.nextcloud.com/t/does-os-antivirus-like-kaspersky-endpoint-security-for-linux-prevent-upload-of-infected-files/91957)
**Author:** [@kaburrub](https://help.nextcloud.com/u/kaburrub)\ **Replies:** 1\ **Last updated:** [November 13, 2020, 8:31pm UTC](https://help.nextcloud.com/t/does-os-antivirus-like-kaspersky-endpoint-security-for-linux-prevent-upload-of-infected-files/91957 "2020-11-13T20:31:08Z")
we already deployed nextcloud inside our organization LAN , we deploy antivirus on ubuntu as os antivirus \[Kaspersky Endpoint Security for Linux \] , but regarding to prvent users from uploading bad files or infected file… --- ## [How can I whitelist some files?](https://help.nextcloud.com/t/how-can-i-whitelist-some-files/89820)
**Author:** [@STrike](https://help.nextcloud.com/u/STrike)\ **Replies:** 10\ **Last updated:** [September 2, 2020, 5:07pm UTC](https://help.nextcloud.com/t/how-can-i-whitelist-some-files/89820 "2020-09-02T17:07:12Z")
Hello everbody, I have some files in my clouds which are installer for windows. For example driver for printer and so an which I don´t want to search everytime in the www. One is wrongly detected as a virus: Fatal fil… --- ## [Documentation on ClamAV rules in "Antivirus for Files" app?](https://help.nextcloud.com/t/documentation-on-clamav-rules-in-antivirus-for-files-app/56310)
**Author:** [@mainmachine](https://help.nextcloud.com/u/mainmachine)\ **Replies:** 3\ **Last updated:** [July 12, 2019, 12:08pm UTC](https://help.nextcloud.com/t/documentation-on-clamav-rules-in-antivirus-for-files-app/56310 "2019-07-12T12:08:08Z")
Nextcloud version: 15.0.8 (docker “production” tag) Operating system and version: Ubuntu 18.04 There seems to be no documentation on how to create rules for the Antivirus fro Files app…? We have a Nextcloud user who b… --- ## [Maldetec detected files, quarantined them now ncp doesn't work](https://help.nextcloud.com/t/maldetec-detected-files-quarantined-them-now-ncp-doesnt-work/46475)
**Author:** [@kakashi](https://help.nextcloud.com/u/kakashi)\ **Replies:** 1\ **Last updated:** [February 2, 2019, 4:49pm UTC](https://help.nextcloud.com/t/maldetec-detected-files-quarantined-them-now-ncp-doesnt-work/46475 "2019-02-02T16:49:05Z")
This was the report of running maldetect: PATH: / TOTAL FILES: 384772 TOTAL HITS: 6 TOTAL CLEANED: 0 WARNING: Automatic quarantine is currently disabled, detected threats are still accessible to users! … --- ## [ClamAV antivirus](https://help.nextcloud.com/t/clamav-antivirus/38838)
**Author:** [@vinc](https://help.nextcloud.com/u/vinc)\ **Replies:** 10\ **Last updated:** [November 9, 2018, 1:37pm UTC](https://help.nextcloud.com/t/clamav-antivirus/38838 "2018-11-09T13:37:59Z")
Hello i have been reading and following this Installation https://docs.nextcloud.com/server/14/admin\_manual/configuration\_server/antivirus\_configuration.html on my Debain 9 this command is not working systemctl enab… --- ## [Antivirus w/ encryption](https://help.nextcloud.com/t/antivirus-w-encryption/33992)
**Author:** [@pancrypticon](https://help.nextcloud.com/u/pancrypticon)\ **Replies:** 5\ **Last updated:** [July 14, 2018, 10:22pm UTC](https://help.nextcloud.com/t/antivirus-w-encryption/33992 "2018-07-14T22:22:46Z")
Hi all, I’m curious about how the Antivirus app works when home folder encryption is enabled. Is the file scanned before it’s encrypted, or vice versa? Obviously the latter would make it useless, which is why it’s impor…