If webmail shows the message "Invalid request. No data was saved." at the moment you try to do something, this guide explains what it means, why it happens, and how to clear it. Webmail is the version of your mailbox you open in a browser (the software behind it is called Roundcube). The message is a normal protective response from webmail, not a sign that anything is broken. Your mail is safe, nothing has been lost, and there is nothing wrong with your account.
This is written for anyone who reads their email through Noiz webmail. If you would rather skip to the fix, go to How to Fix It below. If you want to understand why it happens first, read the two sections before it.
Last reviewed: 27 July 2026, against Roundcube webmail (the software behind Noiz webmail), latest stable. This guide is written for Noiz hosting and is kept current against the webmail Noiz runs. It complements, and does not replace, the official Roundcube documentation linked below. Webmail screens shift slightly between updates, so where a screen differs from the wording here, the behaviour described still applies.
Official Documentation Reference
- Roundcube webmail project: the home of the open-source webmail software that powers Noiz webmail, for background on how it works.
- Mozilla Thunderbird: the free desktop mail application recommended below for anyone who keeps their mail open all day.
How the Error Looks
The message appears in the browser, on the webmail page itself, reading exactly "Invalid request. No data was saved." It shows up at the moment you submit something: sending a message, saving a setting, saving a contact or an identity, or even on the sign-in page as you try to log in.
A few things are worth knowing straight away. It is intermittent, and it usually affects one person rather than everyone on a domain. It does not mean mail has stopped flowing: messages already sent and received are unaffected, and because nothing was actually sent or saved, the attempt leaves no trace in your mail records. It is not an outage, it is not a sign your account has been compromised, and it is not a fault with how your mail is delivered. In almost every case it is the webmail session having quietly timed out, which the next section explains.
Why It Happens
Every webmail session carries a small security token, and that token has to match a live session held on the server. This is how webmail confirms that the request really came from your active, signed-in session and not from somewhere else.
The session has a limited lifetime. After a period of inactivity the server ends the session automatically. This is a standard, built-in default of the webmail software, not a setting Noiz has chosen for you, and because it is enforced on the server it behaves the same way in every browser.
Once that session has lapsed, the token your browser still holds no longer matches anything on the server. At that point webmail refuses the request and shows "Invalid request. No data was saved." rather than half-saving your work against a session that is no longer valid. A stale session still held by the browser produces the same message, which is why it can survive a page reload until the old session is cleared out.
It helps to read this as a protection rather than an error. It exists to stop a forgotten, unattended session, left open on a shared or public computer, from being used to submit data later. The message is webmail doing its job.
A Common Cause: A Bookmarked Address That No Longer Works
There is one habit that brings this on far more often than any other. After signing in, people frequently bookmark whatever address is showing in the browser bar at that moment. That address carries session and mailbox details that were only valid for that one visit, so the bookmark later lands you on a page that can never finish loading properly, and the message follows.
The bookmark should be the plain webmail address only, and nothing after it. For a Noiz mailbox that is:
https://webmail.yourdomain.comReplace yourdomain.com with your own domain. It is an example placeholder, not a real address. Save that plain address as your bookmark, sign in fresh each time, and this particular cause disappears.
How to Fix It
Work through these in order. Most people are back to normal by the first step.
- Sign in again. Return to the webmail sign-in page and log in fresh. This starts a new session and clears most occurrences on its own.
- If the message persists, clear the browser's stored data for webmail. Clear the cookies and site data for your webmail address, close the browser fully (every window, not just the tab), reopen it, and sign in again. This removes the stale session the browser was holding on to.
- Check your bookmark or saved shortcut. If you reach webmail through a bookmark, replace it with the plain address
https://webmail.yourdomain.comas described above, then sign in from there. - Confirm the cause with a different browser or a private window. Opening webmail in another browser, or in a private or incognito window, tells you whether a stale session was to blame, because a private window starts with none of your saved data. Treat this as a check, not a permanent cure: the session lifetime applies everywhere, so it is not a setting you can switch off by changing browser.
How to Avoid It
A few small habits keep it from coming back.
- Try not to leave webmail sitting open and idle part-way through a task. If you start a message, finish and send it rather than leaving it half-written for a long stretch.
- If a webmail tab has been left unattended for a while, reload the page before you submit anything. A fresh page load will tell you immediately if you need to sign in again, before you have typed out a whole message.
- If you keep your mail open all day, use a desktop or mobile mail application rather than webmail. A mail application holds its own connection to the mailbox and is not subject to the webmail session timeout at all, so this message simply cannot happen there. I recommend Mozilla Thunderbird as the free option that runs on Windows, macOS and Linux. For setup, see How to Add an Email Account in Mozilla Thunderbird; if you use a different application, the mail settings are available on request.
For a wider view of email problems and how to narrow them down, see Why Is My Email Not Working? An Email Troubleshooting Guide. For getting into webmail in the first place, see How to Access Your Noiz Webmail.
If you have worked through the steps above and webmail still shows the message every time, the Noiz support team is glad to help. Reach out with your domain and the exact moment the message appears (signing in, sending, or saving a setting), and support will take it from there.
