[en] Solution 1
[en] Enable Browser Emulation Feature on the computer where Web Client is installed.
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[en] Open Registry Editor and navigate to the key:
[en] HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\InternetHKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_BROWSER_EMULATIONExplorer\Main\FeatureControl\FEATURE_BROWSER_EMULATION
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[en] Set the value NiceLabelWeb Client.exe: (REG_DWORD): Hex: 2af8 (decimal: 11000)
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[en] Restart Web Client.
[en] Solution 2
[en] Settings on a Proxy server between your system and authentication server can block Google authentication. Check the settings on the Proxy server.
[en] Solution 3
[en] Make sure that JavaScript option is enabled in Internet Properties.