1 Problem :
Since this error is related to the Ubuntu snap we will first know about the snap. A snap is a bundle of an app and its dependencies that works without modification across many different Linux distributions like Ubuntu, Kubuntu erc.
Related to this error :“unable to install “VLC”: snap “VLC” has “install-snap” change in progress” here we are trying to install VFC media plare through the Snap. But, due to the problem with its process we stuck with above error.
This problem can occur with another apps and its error message format will be like : “unable to install “<package_name>“: snap “<package_name> has “install-snap” change in progress”.
2 Cause :
While trying to install VFC media player the Snap process sometime stuck in the memory. And it becomes non-responding. No matter how many time we try to install VLC media played we will get “unable to install “VLC”: snap “VLC” has “install-snap” change in progress” error after some time.
Since the cause of the problem is a stuck process in memory. We have to just abort that process and initiate the installation process again.
Follow this steps,
Step-1 : Open terminal: and run following command
It will list process related to the snap and their status, like shown in following screenshot
remember process ID, here in above example is “8” where status is “Doing”
Step-2 : run following command: in terminal
sudo snap abort 8
place your ID in above command instead of “8”
enter user password
Now go to the Snap and try to reinstall.