# Frequently Asked Questions **URL:** https://forum.mattermost.com/c/faq/5.md [Latest](https://forum.mattermost.com/latest.md) · [Categories](https://forum.mattermost.com/categories.md) --- ## [About the Frequently Asked Questions category](https://forum.mattermost.com/t/about-the-frequently-asked-questions-category/15)
**Author:** [@it33](https://forum.mattermost.com/u/it33)\ **Replies:** 0\ **Last updated:** [June 27, 2015, 3:55pm UTC](https://forum.mattermost.com/t/about-the-frequently-asked-questions-category/15 "2015-06-27T15:55:11Z")
Answers for all common problems & questions --- ## [Webpage, the information could not be synchronized and updated in real time](https://forum.mattermost.com/t/webpage-the-information-could-not-be-synchronized-and-updated-in-real-time/26147)
**Author:** [@lucien.lu](https://forum.mattermost.com/u/lucien.lu)\ **Replies:** 0\ **Last updated:** [September 20, 2026, 4:46pm UTC](https://forum.mattermost.com/t/webpage-the-information-could-not-be-synchronized-and-updated-in-real-time/26147 "2026-09-20T16:46:21Z")
I encountered an issue during the installation, deployment, and testing of the Mattermost entry-level version: when two users were chatting and sending messages to each other on the webpage, the information could not be … --- ## [How to know when others react with emoji](https://forum.mattermost.com/t/how-to-know-when-others-react-with-emoji/26131)
**Author:** [@wxue1011](https://forum.mattermost.com/u/wxue1011)\ **Replies:** 1\ **Last updated:** [September 15, 2026, 9:28pm UTC](https://forum.mattermost.com/t/how-to-know-when-others-react-with-emoji/26131 "2026-09-15T21:28:36Z")
Hi, I am swithed Microsoft teams to mattermost, now i hava a confusion。 How to know when others react with emoji in mattermost. --- ## [How to log in after setup?](https://forum.mattermost.com/t/how-to-log-in-after-setup/25522)
**Author:** [@gsorel](https://forum.mattermost.com/u/gsorel)\ **Replies:** 4\ **Last updated:** [November 26, 2025, 6:21pm UTC](https://forum.mattermost.com/t/how-to-log-in-after-setup/25522 "2025-11-26T18:21:07Z")
Hi all, I’m new to Mattermost Server and I’m wondering how to log in into a fresh install. I’ve used both Docker or Git install but I end up the same way in not being able to access Mattermost. I’ve also tried with mmc… --- ## [Do we need to stop the mattermost service prior to exporting data?](https://forum.mattermost.com/t/do-we-need-to-stop-the-mattermost-service-prior-to-exporting-data/25212)
**Author:** [@ashim](https://forum.mattermost.com/u/ashim)\ **Replies:** 3\ **Last updated:** [October 2, 2025, 7:23am UTC](https://forum.mattermost.com/t/do-we-need-to-stop-the-mattermost-service-prior-to-exporting-data/25212 "2025-10-02T07:23:25Z")
Dear all, I am reading this page: I wish to do: sudo -u mattermost bin/mattermost export bulk file.json --all-teams --attachments OR: sudo mmctl export create --attachments My query is : Can I do either of the ab… --- ## [Multi-tenant SaaS usage](https://forum.mattermost.com/t/multi-tenant-saas-usage/23469)
**Author:** [@t8i](https://forum.mattermost.com/u/t8i)\ **Replies:** 1\ **Last updated:** [September 4, 2025, 6:35pm UTC](https://forum.mattermost.com/t/multi-tenant-saas-usage/23469 "2025-09-04T18:35:12Z")
I need mattermost as part of the multi-tenant offering we provide to our customers. Do I need separate mattermost server per customer or is there a way to share mattermost cluster for multiple customers/tenants in an iso… --- ## [Disabling "view members" in teams](https://forum.mattermost.com/t/disabling-view-members-in-teams/21531)
**Author:** [@DJIronic](https://forum.mattermost.com/u/DJIronic)\ **Replies:** 1\ **Last updated:** [November 19, 2024, 6:47pm UTC](https://forum.mattermost.com/t/disabling-view-members-in-teams/21531 "2024-11-19T18:47:42Z")
Hello, I would like to disable this button: Is there a possibility to hide this option, so users cannot list all members of the team? We want to use the team to communicate with our clients, so ideally we would lik… --- ## [How declare Minio autosigned certificate](https://forum.mattermost.com/t/how-declare-minio-autosigned-certificate/22696)
**Author:** [@obeyler](https://forum.mattermost.com/u/obeyler)\ **Replies:** 3\ **Last updated:** [March 6, 2025, 8:49pm UTC](https://forum.mattermost.com/t/how-declare-minio-autosigned-certificate/22696 "2025-03-06T20:49:00Z")
I’m using a autosigned certificate for minio and mattermost operator to install it. I don’t find any doc about how to specify ca.cert to validate the minio certificate. I try chatgpt who give me these config: fileSt… --- ## [Automatic Plugin Installation](https://forum.mattermost.com/t/automatic-plugin-installation/21625)
**Author:** [@Akito](https://forum.mattermost.com/u/Akito)\ **Replies:** 0\ **Last updated:** [November 29, 2024, 4:29pm UTC](https://forum.mattermost.com/t/automatic-plugin-installation/21625 "2024-11-29T16:29:35Z")
How can I automatically install plugins? What’s the best practice for that? For example, I have a plugin .tar.gz, which I want to automatically install, when installing Mattermost for the first time. The config.json is … --- ## [Virtually "merge" multiple Mattermost teams into one view](https://forum.mattermost.com/t/virtually-merge-multiple-mattermost-teams-into-one-view/18314)
**Author:** [@honza-zidek](https://forum.mattermost.com/u/honza-zidek)\ **Replies:** 3\ **Last updated:** [October 16, 2024, 7:03pm UTC](https://forum.mattermost.com/t/virtually-merge-multiple-mattermost-teams-into-one-view/18314 "2024-10-16T19:03:44Z")
I am a member of multiple teams. Many people from our organizations are members of all the teams, but some of them only of some. I never remember in which team they are and navigating through the UI is very cumbersome. I… --- ## [Finding Messages with the most emoji reactions](https://forum.mattermost.com/t/finding-messages-with-the-most-emoji-reactions/19649)
**Author:** [@samucaesar](https://forum.mattermost.com/u/samucaesar)\ **Replies:** 3\ **Last updated:** [September 22, 2024, 12:31pm UTC](https://forum.mattermost.com/t/finding-messages-with-the-most-emoji-reactions/19649 "2024-09-22T12:31:05Z")
Hi! My project has been using Mattermost for years. I now want to create a quiz for a community day. One quiz question should be: “Which message has received the most emoji reactions in the history of the project?”. Is… --- ## [Configure a Mattermost deployment to use S3 with a specific storage class](https://forum.mattermost.com/t/configure-a-mattermost-deployment-to-use-s3-with-a-specific-storage-class/19528)
**Author:** [@rlilith](https://forum.mattermost.com/u/rlilith)\ **Replies:** 0\ **Last updated:** [September 8, 2024, 6:03am UTC](https://forum.mattermost.com/t/configure-a-mattermost-deployment-to-use-s3-with-a-specific-storage-class/19528 "2024-09-08T06:03:11Z")
Hi all, Am migrating from a “data” directory to a local S3-compatible storage solution. My storage solution has multiple storage classes supported, and I need Mattermost to upload files to the STANDARD\_IA storage class… --- ## [\[GUIDE\] Using HAProxy with Mattermost](https://forum.mattermost.com/t/guide-using-haproxy-with-mattermost/4117)
**Author:** [@kjkeane](https://forum.mattermost.com/u/kjkeane)\ **Replies:** 2\ **Last updated:** [August 30, 2024, 11:49am UTC](https://forum.mattermost.com/t/guide-using-haproxy-with-mattermost/4117 "2024-08-30T11:49:50Z")
This guide is to provide an introduction on installing, configuring and utilizing HAProxy as a proxy for Mattermost. This is just the way I have HAProxy currently configured, so if there are any issues with this guide p… --- ## [Connexion Mattermost to my AD](https://forum.mattermost.com/t/connexion-mattermost-to-my-ad/18843)
**Author:** [@Simplon](https://forum.mattermost.com/u/Simplon)\ **Replies:** 1\ **Last updated:** [June 20, 2024, 2:14pm UTC](https://forum.mattermost.com/t/connexion-mattermost-to-my-ad/18843 "2024-06-20T14:14:03Z")
Hello, I just installed Mattermost on an Ubuntu. I made the first connection with a login and I want to make the connection with my Active Directory but it does not work. I would like to point out that I took the free… --- ## [A space for guest users?](https://forum.mattermost.com/t/a-space-for-guest-users/18675)
**Author:** [@mksa](https://forum.mattermost.com/u/mksa)\ **Replies:** 2\ **Last updated:** [May 28, 2024, 6:21pm UTC](https://forum.mattermost.com/t/a-space-for-guest-users/18675 "2024-05-28T18:21:53Z")
Hi, I just set up a server for mattermost with the intention of testing it out before rolling it out to my users. I need to have a space where I can interact with a few freelancers, such that they cannot interact with … --- ## [\[FAQ\] How do I fix a "502 Bad Gateway" error when trying to load Mattermost?](https://forum.mattermost.com/t/faq-how-do-i-fix-a-502-bad-gateway-error-when-trying-to-load-mattermost/18072)
**Author:** [@john.combs](https://forum.mattermost.com/u/john.combs)\ **Replies:** 0\ **Last updated:** [February 29, 2024, 6:44pm UTC](https://forum.mattermost.com/t/faq-how-do-i-fix-a-502-bad-gateway-error-when-trying-to-load-mattermost/18072 "2024-02-29T18:44:41Z")
How do I fix a “502 Bad Gateway” error when trying to load Mattermost? A 502 Bad Gateway error in Mattermost means that whatever server your request was sent to on the way to retrieving the information you requested, li… --- ## [\[FAQ\] Does Mattermost integrate with JumpCloud for SAML Authentication?](https://forum.mattermost.com/t/faq-does-mattermost-integrate-with-jumpcloud-for-saml-authentication/16572)
**Author:** [@cwarnermm](https://forum.mattermost.com/u/cwarnermm)\ **Replies:** 0\ **Last updated:** [August 1, 2023, 2:26pm UTC](https://forum.mattermost.com/t/faq-does-mattermost-integrate-with-jumpcloud-for-saml-authentication/16572 "2023-08-01T14:26:20Z")
Yes! In order to use JumpCloud as a SAML provider for Mattermost, you will need a few things: A Mattermost Professional or Enterprise licence (SAML integration is not available on the free version) Admin access to you… --- ## [\[FAQ\] How can I troubleshoot Mattermost connection issues?](https://forum.mattermost.com/t/faq-how-can-i-troubleshoot-mattermost-connection-issues/17333)
**Author:** [@john.combs](https://forum.mattermost.com/u/john.combs)\ **Replies:** 1\ **Last updated:** [November 16, 2023, 8:33pm UTC](https://forum.mattermost.com/t/faq-how-can-i-troubleshoot-mattermost-connection-issues/17333 "2023-11-16T20:33:30Z")
Solving Connectivity Problems with Your Mattermost Server - A Comprehensive Guide Having connection issues with your Mattermost server? Start here! :point\_down:t2: Verify Server Status Start by checking the status of… --- ## [How can I delete a channel? (old but gold)](https://forum.mattermost.com/t/how-can-i-delete-a-channel-old-but-gold/16201)
**Author:** [@Darkland](https://forum.mattermost.com/u/Darkland)\ **Replies:** 6\ **Last updated:** [June 30, 2023, 6:16am UTC](https://forum.mattermost.com/t/how-can-i-delete-a-channel-old-but-gold/16201 "2023-06-30T06:16:32Z")
I guess it has been asked many times. I couldn’t find a solution even though I browsed many of them on the forum. Although I researched in detail, I could not figure out how to delete the created channel? Shouldn’t this … --- ## [Can Mattermost connect with IRC, XMPP, Lync, Matrix and other communication systems?](https://forum.mattermost.com/t/can-mattermost-connect-with-irc-xmpp-lync-matrix-and-other-communication-systems/527)
**Author:** [@it33](https://forum.mattermost.com/u/it33)\ **Replies:** 1\ **Last updated:** [March 13, 2023, 10:37am UTC](https://forum.mattermost.com/t/can-mattermost-connect-with-irc-xmpp-lync-matrix-and-other-communication-systems/527 "2023-03-13T10:37:59Z")
Mattermost is an open source project that benefits from users building integrations to address the needs of their teams, and sharing back those integrations with the community. The community has created multiple integ… --- ## [Updated installation method](https://forum.mattermost.com/t/updated-installation-method/14789)
**Author:** [@Bambos](https://forum.mattermost.com/u/Bambos)\ **Replies:** 6\ **Last updated:** [January 17, 2023, 6:23am UTC](https://forum.mattermost.com/t/updated-installation-method/14789 "2023-01-17T06:23:15Z")
Dear forum members, i’m trying to setup mattermost server on a linux debian VM for production use. From the documentation i understand that we need 3 components, a database server (postgres or mysql) , web server (apac… --- ## [Who is the owner of an attached file](https://forum.mattermost.com/t/who-is-the-owner-of-an-attached-file/13821)
**Author:** [@Roger](https://forum.mattermost.com/u/Roger)\ **Replies:** 5\ **Last updated:** [August 5, 2022, 11:26am UTC](https://forum.mattermost.com/t/who-is-the-owner-of-an-attached-file/13821 "2022-08-05T11:26:17Z")
Is there a way to find out which attachments were posted by which users and date? --- ## [Calling/Video/Screenshare](https://forum.mattermost.com/t/calling-video-screenshare/9147)
**Author:** [@productquestion](https://forum.mattermost.com/u/productquestion)\ **Replies:** 1\ **Last updated:** [June 21, 2022, 5:11pm UTC](https://forum.mattermost.com/t/calling-video-screenshare/9147 "2022-06-21T17:11:59Z")
Has anyone been successful in finding a library or plugin that works for both web and mobile clients when it comes to calling on mattermost. Any information would be extremely helpful, also if anyone has an idea about wh… --- ## [Migration from Self hosted to Mattermost cloud](https://forum.mattermost.com/t/migration-from-self-hosted-to-mattermost-cloud/12713)
**Author:** [@kush-dl](https://forum.mattermost.com/u/kush-dl)\ **Replies:** 1\ **Last updated:** [December 17, 2021, 5:10pm UTC](https://forum.mattermost.com/t/migration-from-self-hosted-to-mattermost-cloud/12713 "2021-12-17T17:10:40Z")
At our company we are currently using a self hosted Mattermost instance but now we have decided to move to Mattermost cloud. Is there any way right now to migrate our self hosted database to mattermost cloud as we don’t … --- ## [Removing Built-In Emoji - Unsupported. Use with caution](https://forum.mattermost.com/t/removing-built-in-emoji-unsupported-use-with-caution/11450)
**Author:** [@stu.doherty](https://forum.mattermost.com/u/stu.doherty)\ **Replies:** 4\ **Last updated:** [August 11, 2021, 9:20pm UTC](https://forum.mattermost.com/t/removing-built-in-emoji-unsupported-use-with-caution/11450 "2021-08-11T21:20:47Z")
:stop\_sign:WARNING: The following instructions are for advanced users. Please proceed with caution​:stop\_sign: :information\_source:NOTE: If you operate a highly-available Mattermost cluster these steps must be applie… --- ## [Mattermost broken on AWS Elastic Beanstalk](https://forum.mattermost.com/t/mattermost-broken-on-aws-elastic-beanstalk/2534)
**Author:** [@Bruce](https://forum.mattermost.com/u/Bruce)\ **Replies:** 3\ **Last updated:** [October 27, 2020, 6:13pm UTC](https://forum.mattermost.com/t/mattermost-broken-on-aws-elastic-beanstalk/2534 "2020-10-27T18:13:12Z")
{"status":"FAILURE","api\_version":"1.0","results":\[{"status":"FAILURE","msg":"Invalid Dockerrun.aws.json version, abort deployment. \\nHook /opt/elasticbeanstalk/hooks/appdeploy/pre/03build.sh failed. For more detail, che… --- ## [What does the /me command actually do?](https://forum.mattermost.com/t/what-does-the-me-command-actually-do/10610)
**Author:** [@Kees\_C](https://forum.mattermost.com/u/Kees_C)\ **Replies:** 1\ **Last updated:** [October 23, 2020, 2:00pm UTC](https://forum.mattermost.com/t/what-does-the-me-command-actually-do/10610 "2020-10-23T14:00:04Z")
Typical novice question (I think), but what does /me actually do? All I’ve found so far is “Do an action”, but what does that really mean? --- ## [\[SOLVED\] \[Guide\] Hosting Mattermost on AWS](https://forum.mattermost.com/t/solved-guide-hosting-mattermost-on-aws/4214)
**Author:** [@Ameliawilson](https://forum.mattermost.com/u/Ameliawilson)\ **Replies:** 1\ **Last updated:** [August 10, 2020, 6:09am UTC](https://forum.mattermost.com/t/solved-guide-hosting-mattermost-on-aws/4214 "2020-08-10T06:09:09Z")
I recently installed the open-source Slack alternative Mattermoson a personal t2.micro Ubuntu instance in AWS. So far, I love it and thought I would share my experiences in using EC2, RDS, and S3 to host the application. … --- ## [Problem compiling/running MPNS](https://forum.mattermost.com/t/problem-compiling-running-mpns/10238)
**Author:** [@abhi](https://forum.mattermost.com/u/abhi)\ **Replies:** 1\ **Last updated:** [August 5, 2020, 8:38am UTC](https://forum.mattermost.com/t/problem-compiling-running-mpns/10238 "2020-08-05T08:38:46Z")
We have a specific use-case for MPNS where we need to alter the message sent out for both Android and iOS push service. Since this is very unique to our scenario I am trying to make that change in the codebase and trying… --- ## [APP can't connect to the Database](https://forum.mattermost.com/t/app-cant-connect-to-the-database/9617)
**Author:** [@fendle](https://forum.mattermost.com/u/fendle)\ **Replies:** 7\ **Last updated:** [June 4, 2020, 2:49pm UTC](https://forum.mattermost.com/t/app-cant-connect-to-the-database/9617 "2020-06-04T14:49:31Z")
Hi, my mattermost docker app can’t connect to the postgres database. I tried my own postgres image and as well the provided within my yaml file. In the logfile I get the following error: {“level”:“error”,“ts”:15878310… [Next page](https://forum.mattermost.com/c/faq/5.md?page=1)