If an app requires the .NET Framework 3.5, but doesn't find that version enabled on your Windows 10 computer, it displays the prompt for installing the .NET Framework 3.5 on demand, either during installation, or when you run the app for the first time after its installation. If you receive the message that you need to install .NET Framework when installing Paper Tiger, you should choose the option “Install this feature” to enable the .NET Framework 3.5 on your Windows 10 computer.
Alternately during Installation of The Paper Tiger Desktop version on Windows 10, you may see the following error code 0x800F081F if .NET Framework 3.5 couldn't be installed:
The .NET Framework is an integral part of many applications running on Windows and provides common functionality for those applications to run. Normally, before running/installing The Paper Tiger on Windows 10, you will need to enable .NET Framework from the Control Panel on your computer. To enable .NET Framework 3.5, please follow these steps:
a) Press “Windows Logo” + “R” keys on the keyboard.
b) Type “appwiz.cpl” in the “Run” command box and press “ENTER”.
c) In the “Programs and Features” window, click on the link “Turn Windows features on or off”.
d) Check if the “.NET Framework 3.5 (includes .NET 2.0 and 3.0)” option is available in it.
e) If yes, then enable it and then click on “OK”.
f) Follow the on-screen instructions to complete the installation and restart the computer, if prompted.
This will install the .NET Framework 3.5 feature on your Windows 10 computer.
There is also another way by which .NET Framework 3.5 gets installed on your Windows 10 computer. This is done by the apps on demand.