Authentication error when installing Squish 9.2 after Squish 9.3 with Qt Account

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Symptoms

When installing Squish 9.2 after a Squish 9.3 installation that used the Qt Account license option, the Squish 9.2 installer may pick up the existing QLS settings and display the following server address:

https://qls.qt.io

Squish 9.2 installer showing the inherited QLS configuration

Clicking Next with this configuration results in an authentication error.

More information

The Squish 9.2 installer reuses the existing QLS settings.

The server https://qls.qt.io requires authentication, which causes the authentication error in this situation.

Solution

Do not continue with the automatically detected https://qls.qt.io setting.

Use the licensing configuration appropriate for the Squish 9.2 installation instead, such as your internal on-premises QLS server address, an FLS server address, or a temporary license key.