How to Fix the “No Installation Candidate” Problem in Ubuntu
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Summary
A “no installation candidate” error in Ubuntu Linux occurs when the APT package management utility is unable to find a package that matches the criteria provided.
It occurs when the user tries to install a misspelled package name, a package not included in the default repositories, or a package not compatible with the system architecture.
To resolve this error, recheck the package name, search for the package using the apt search command and review the results, update the system, and add any missing third-party repositories.
Other solutions include checking the enabled repositories under Software & Updates, verifying the Ubuntu version, trying alternative installation methods, and checking for supporting PPAs on Launchpad.