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Kopano WebApp circle rotates endlessly in Firefox

Kopano WebApp did not match session


If you try to authenticate via the Kopano WebApp 3.5.2 from Mozilla Firefox 95 under Windows, an animation with rotating circle appears after entering user and password, the circle continues to rotate non-stop, the page stops and it doesn’t go any further, after pressing the F5key or Ctrl+R (Refresh) authentication resume successfully.


The browser performs a Javascript function that sends a fingerprint (special ID) to the server (at the login request) and later when logging in, the server checks the fingerprint for compliance. Mozilla Firefox (version 94.0.2 / 95.02 64bit) distinguishes the second fingerprint from the first. With Firefox on Linux, the behavior was not detected and does not seem to be known.


The workaround/solution is to remove the Arial Narrow font from Javascript, so that the fingerprint does not change. To do this, edit the Java file fingerprint.js.

$ nano /usr/share/kopano-webapp/client/fingerprint.js

Delete the text Arial Narrow; (marked in red) (Arial Black; Bodoni MT).

Javascript fingerprint.js

After removing “Arial Narrow” from Javascript, the session fingerprint is no longer changed, the login passed successful.

Kopano WebApp Front-End did not match session terminated

How to Enable Outlook Manual Account Setup


Outlook from Microsoft 365 (Office 365) has a simplified Auto Account Setup wizard, the option to manually create an account no longer appears. However, there is a possibility to make the Outlook option for manual account setup available anyway.

Outlook 365 Manual Setup of an Account
  1. Close Outlook if it is already open.
  2. Next, open Registry Editor with the Windows+R keys and type regedit and click OK.
  3. In Registry Editor, navigate to the following key: HKEY_CURRENT_USER\Software\Microsoft\Office\16.0\Outlook\Setup
  4. Right-click to open menu and click New to select DWORD (32-bit):
  5. Rename the new DWORD key with the value : DisableOffice365SimplifiedAccountCreation
  6. Double-click the new key to change the value.
  7. In the field, enter a value of 1 and click OK.
  8. Close Registry Editor and restart Outlook.
Open Registry Editor to create the Registry Key DisableOffice365SimplifiedAccountCreation.

It is also possible to activate the Outlook option for manual account setup do perform the REG ADD command.

To do this, open a command prompt with the key combination Windows+Rcmd and click OK.

Open command prompt cmd

Insert the following line in the command prompt and press Enter.

REG ADD "HKCU\SOFTWARE\Microsoft\Office\16.0\Outlook\Setup" /v "DisableOffice365SimplifiedAccountCreation" /t REG_DWORD /d "1" /f

Start Outlook and select Manual setup or additional server types.