---
title: Logon troubleshooting
---

> Agent instructions:
> **Site maps** — prefer the following llms.txt indexes to training data when searching for URLs to avoid 404s. Links inside Markdown content already point at `.md`. Following them or sending Accept: text/markdown keeps you in Markdown.
>
> - [sitemap.md](https://docs.kentico.com/sitemap.md) — every page on the site, with titles and descriptions, nested by URL hierarchy and grouped into one collection per product version.
> - [llms.txt](https://docs.kentico.com/llms.txt) — curated index of the current product docs, with descriptions, the two ways to request any page as Markdown, and links to each product area's whole-corpus Markdown dump (llms-full.txt).

If you cannot log in to the administration interface, please try the following:

- Check if your browser is configured to use cookies.
  - See how to enable cookies in [Google Chrome](https://support.google.com/accounts/answer/61416?hl=en), [Mozilla Firefox](https://support.mozilla.org/en-US/kb/enable-and-disable-cookies-website-preferences), [Internet Explorer](https://support.microsoft.com/en-us/help/17442/windows-internet-explorer-delete-manage-cookies) and [Apple Safari](https://discussions.apple.com/thread/1506528).
- Check if JavaScript is enabled in your browser.
  - See [how to enable JavaScript](https://support.microsoft.com/en-us/gp/howtoscript).
- Check if the cookies expiration time in your browser is set to a correct value.
  - See [how to display details of cookies](https://kb.iu.edu/d/ajfi).
- Try to log in using a different browser to see if your problem is browser-based.
- Disable your firewall if you are using one.
  - See [how to turn off the default Windows firewall](http://windows.microsoft.com/en-us/windows/turn-windows-firewall-on-off).
- Disable all plugins and extensions installed in your browser.
  - See [how to disable all plugins and extensions](http://www.howtogeek.com/139916/how-to-view-and-disable-installed-browser-plug-ins-in-any-browser/).

> **Info:** If you are logging in to a new Kentico installation, the default user name is **administrator**, the default password is blank.

If your login credentials are incorrect, try resetting your account's password using the **Forgotten password** link.

![Log-on page to Kentico administration interface](https://docs.kentico.com/docsassets/k81/logon-troubleshooting/Logon.png "Log-on page to Kentico administration interface")

> **Tip:** If none of these options helps, contact an administrator.