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How we quickly fixed – cPanel tailwatchd failed?

Looking for a solution to the error ‘cPanel tailwatchd failed’? Here’s how we fix it. 

Tailwatchd monitors logs in the cPanel. Hence, it is used to troubleshoot any technical problems.

At Bobcares, we often receive requests to fix tailwatchd errors as a part of our Server Management Services.

Today, let’s see how our Support Engineers troubleshoot and fix this error.


What is TailWatchd?

Tailwatchd is a technical driver which monitors the logs in cPanel for any error. It also monitors the cPanel modules like chkservd, cpbandwd, eximstats and so on.

Earlier, there were three daemons who would collect information on mail and bandwidth logs. They were antirelayd, eximstats, and cpbandwd.

But now, they are deprecated. So, tailwatchd manages all the services done by these daemons.

Actually, the tailwatchd is much better as it is more robust and lightweight. Also, they reduce the server load to a great extent.


What causes cPanel tailwatchd failed error to occur?

Basically, tailwatchd is used to monitor the logs in the cPanel. And perform some actions according to the errors logged in the log files.

However, in some cases, the tailwatchd itself undergoes some problem and stop working.

This mainly happens if there is an error in the cPanel. Or if the cPanel is not up to date.

For the fully-fledged working of tailwatchd, a cPanel update is a must.


How we fix cPanel tailwatchd failed error?

Having a decade of experience in managing servers, our Dedicated Engineers are familiar with the tailwatchd errors. Now, let’s see how our Support Engineers fix this error.

Recently, one of our customers approached us with the below warning message

tailwatchd failed @ Dec 10 00:33:10 2019. A restart was attempted automatically

So to check the tailwatchd logs, we ran the below command

tail -f /usr/local/cpanel/logs/tailwatchd_log

Then, we restarted the cPanel so that tailwatchd also restart with it.

service cpanel restart

After that, we checked the status of tailwatchd through the command

/usr/local/cpanel/libexec/tailwatchd –status

As a result, we could see that the tailwatchd was enabled on the server. The below output is received and confirms that the tailwatchd is active.

cPanel tailwatchd failed

Then, we saw the again to check if the error was still persisting.

tail -f /usr/local/cpanel/logs/tailwatchd_log

Unfortunately, we could see that the error was still present in the logs. So we updated the cPanel to fix the error.

We used the below command to update the cPanel.

/scripts/upcp –force

Finally, this fixed the error.


[Need any assistance in fixing the tailwatchd errors? – We’ll help you]



In short, the tailwatchd service is used to monitor the logs of email and bandwidth. ‘cPanel tailwatchd failed’ error occurs if there is an error in the cPanel or if the cPanel is not updated. Today, we saw how our Support Engineers fix the error related to tailwatchd.


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