Downgrading Mono
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Downgrading Mono is not usually recommended but things sometimes go wrong and we understand that. Here's a simple guide (we hope!) to help you. If you need help, please do not hesitate to contact us through a or ask our other users on .
Check what version of Ubuntu you are running by:
Check the CPU architecture of your server:
The commands you will copy in Reinstall an Older Mono Version will be different depending on the CPU architecture that you are running.
You can use either of these commands:
or
Steps shown here are exclusively for Ubuntu and commands are to be run as root so that everything is properly deleted.
Remove the existing Mono installation (run these commands one after the other):
This command will remove all installed types of Mono even if you didn't install most of them in the first place. We just want to be sure to catch any and all of them rather than having to deal with some headaches down the line.
Press Y when prompted.
Press the Enter key to confirm.
Press Y when prompted.
Press the Enter key to confirm.
Check /etc/apt/sources.list.d/ for any references to Mono. If they exist, remove them:
Delete ALL of the text that is shown in this file.
Once done, press Ctrl + X at the same time to save.
Press Y when prompted.
Press the Enter key to confirm.
While not everyone needs to do this, it is best to run the first command once to be sure.
If your result is as shown, you'll need to follow the other steps in this section.
If the result is empty, move on to the Reinstall an Older Mono Version section.
Continuing with our removal of the straggling bits of Mono, we need to run this command:
Press Y when prompted.
Press the Enter key to confirm.
This particular command will remove any other stragglers that might still hang around in our system.
In order to make sure that the remaining Mono folders are removed, run this command.
Once that is done, run this command to make sure that Mono has 100% been purged from our system.
First, we will need to set a new line in our repository list file.
In this file, we will paste only ONE of the three lines presented below. Please copy the one that matches the version of Ubuntu that you are running.
For users who are running on Intel based machines:
Ubuntu version 16:
Ubuntu version 18:
Ubuntu version 20 (lowest version of Mono you can downgrade to is 6.8):
For users who are running on AMD based machines:
Ubuntu version 16:
Ubuntu version 18:
Ubuntu version 20 (lowest version of Mono you can downgrade to is 6.8):
An example of a successful paste for Ubuntu version 18:
Press Ctrl + X at the same time to save.
Press Y when prompted.
Press the Enter key to confirm.
It's now time for what we've been waiting for, installing the older version of Mono! Run the below command in your terminal.
Press Y when prompted.
Press the Enter key to confirm.
It is likely that the Mono version installed would be an older version than what we intended. To confirm this, run the following command.
Now that we've confirmed that it's running an older version, we will need run the following two commands.
Press Y when prompted.
Press the Enter key to confirm.
Run the following command one final time to confirm.
Congratulations! You've downgraded your Mono version successfully.
Time to start up your HTS!
