E package 'tor' has no installation candidate

1. What does no installation candidate mean?
2. Why is my Package installer not installing?
3. Why is Tor not installing?
4. How do I enable TPM 2.0 on Windows 10?

What does no installation candidate mean?

What does Package <package> has no installation candidate means that the package is not found in your Ubuntu releases software sources. One possible reason for this message is that this package is an old package that has been discontinued from your release's default repositories.

Why is my Package installer not installing?

Why does the Package installer not installing apps? If too many apps are running in the background, they may conflict with the Package installer and restricts it from installing apps. Therefore, close all the running backgrounds apps and try installing apps using the Package installer.

Why is Tor not installing?

QUICK FIXES

Try each of the following: Your computer's system clock must be set correctly, or Tor will not be able to connect. Make sure another Tor Browser or instance of 'Tor' is not already running on your system. If you're not sure if Tor Browser is running, restart your computer.

How do I enable TPM 2.0 on Windows 10?

From the System Utilities screen, select System Configuration > BIOS/Platform Configuration (RBSU) > Server Security > Trusted Platform Module options. Verify the following: "Current TPM Type" is set to TPM 2.0. "Current TPM State" is set to Present and Enabled.