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Guestline Rezlynx: Rezlynx Browser failing to launch

You can review some common issues, seen when trying to launch the installed Rezlynx Browser, in this article.

Xanthe Jackson avatar
Written by Xanthe Jackson
Updated over a week ago

You can access Rezlynx via an internet browser or via an installed Rezlynx Browser programme on your PC - which one you use is up to you. The install Rezlynx Browser looks like this on your desktop:


When using the installed programme on your PC users can sometimes experience issues with:

This article will focus on issues experienced when launching the browser with information below on how to check and resolve common issues:


No internet

If you are accessing this article from the same device that is seeing issues with loading the Rezlynx Browser then this can be ruled out.

However if you are accessing this article from another device, then please check the other devices internet connection and strength. Checks will need to be made to the ISP, Modem or Router, and if you are using WiFi connection ensure you are connecting at 5ghz, not 2.4. Your IT support should be able to assist you further with these checks.


Rezlynx Browser Not Launching

When you click on the desktop link for Rezlynx Browser the application should open or launch, it if does not then the steps below should be completed on the PC which is unable to launch the application, and cannot be completed remotely by Guestline.

To resolve the Rezlynx Browser not launching, follow the steps below:

  1. On your PC navigate to File Explorer. Paste the below string into the main destination bar at the top of the screen:
    C:\ProgramData\Guestline Ltd\Rezlynx Web Browser\5.0

  2. Right-click on the Settings file, then select Open with, Notepad. If this file opens and is blank with no text, then this file can be deemed useless and the cause of the failing to launch issue. If blank, rename the file Settings.OLD and attempt to re-launch the Rezlynx browser from the desktop icon. This will successfully cause the Rezlynx browser to recreate a new settings file, allowing you to successfully launch the browser.

  3. Once launched, select Tools and Browser Options.

  4. 4444 Enter your Site ID and click Apply.


Rezlynx Browser is using out of date URLs or for the wrong region

If you are having issues with launching the Rezlynx Browser and you are receiving an error like this:

It may be because your Browser has outdated Server URLs configured.

To update the Server URLs, follow the steps below:

  1. Click OK on the warning box.

  2. On the Rezlynx Browser screen in the top left corner select Tools and Browser Options.

  3. Click on the first URL in the server list, it usually takes 3 clicks before the cursor will appear and allow you to edit the URL.

  4. Once the URL has been updated, click Apply.

  5. One the Rezlynx Browser screen in the top left corner select File and Work Online.


Cache needs to be cleared

Due to recent updates to the Rezlynx Browser you can now clear your cache via a keyboard shortcut.

To clear your cache using the keyboard shortcut, follow the steps below:

  1. On your computer keyboard select Ctrl + Shift + Delete all at the same time.

    📌 Note: If this keyboard shortcut does not open a new screen it is likely this is due to an old version of Rezlynx Browser or that the PC is running Windows 7 or 8 - please scroll down to the see how to clear your cache without using the keyboard shortcut.

  2. A new window will open, set Time Range to All Time. Then select Cookies and other site data and Cached images and files.

  3. Once the selection has been made, click Delete Data.

  4. On the Rezlynx Browser screen in the top left corner select Navigation, and Refresh.

However if the keyboard shortcut does not open a new window, often due to running an older version of Rezlynx Browser or Windows 7 or 8, you can still clear the cache.

To clear the cache without using the keyboard shortcut, follow the steps below:

  1. On the Rezlynx Browser screen in the top left corner select Tools and Developers Tools.

  2. A new window will open, select Applications from the top of the screen.

  3. From the left hand menu select Storage and use the arrow to expand the menu for Local Storage, Session Storage, and Cookies.

  4. Right click on any lines showing https://pms.eu.guestline.net and select Clear.image

  5. Once completed, close the Dev Tools window.

  6. On the Rezlynx Browser screen in the top left corner select Navigation, and Refresh.

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