Does Mozilla Thunderbird Freezes & Run Extremely Slow in Mac & Windows OS ?

  author
Written By Kumar Raj
Anuraag Singh
Approved By Anuraag Singh
Published On August 5th, 2022
Reading Time 4 Minutes Reading

Before going in depth of the Error Mozilla Thunderbird Freezes,  let’s first analyze a user’s simple query and try to get him a proper solution when Thunderbird running very slow:

“Hello Folks! I have been using Thunderbird since 3 years on my MAC Operating System. From past one week, I have noticed that my laptop’s battery life is getting horrible while running it. I never delete anything from my mail folders. While working on my system, I came across a Mozilla Thunderbird bug 794401. This bug stands for Thunderbird Freezes or Thunderbird running extremely slow, making use of 100% CPU while loading the folders or message headers. I am really shocked as Thunderbird never disguised me like this. I want proper help. Is there anyone who can help me out to stop error Mozilla Thunderbird Freezes? All leads shall be highly appreciated and reverted. Thanks in Advance!”

“I prefer Windows OS over Mac Operating System. Last week, one of my friends suggested me Mozilla Thunderbird as it has a brilliant interface. So, I immediately downloaded Thunderbird in my system. Now, from past few days an error Thunderbird running extremely slow has occurred in the system. I burned my midnight oil and kept on doing my R&D and implemented many solutions. But, none of them was of any use and did not solve the Thunderbird bug 794401. Even it corrupted my MBOX files present in mailbox. I am very much tensed and need a proper solution. Every lead is important. Please Help!”

So, there are two parameters which can resolve the Error Thunderbird Extremely Slow and making use of 100% CPU while loading mailboxes. Both the manual way and recommended solution will help you out in solving the problem when your Mozilla Thunderbird Freezes & Thunderbird running extremely slow.

 

 

Manual Solution for Mac Operating System

1. From Edit Menu, opt for Preferences and in later editions, it is Options
2. Click Advance Tab present on Top and afterwards Config Editor

Note: A warning dialog box pops-up which can be ignored safely.
3. Open Configuration Editor and type Idle in the search box and search for mail.db.idle_limit

As per bug records, the correct value of the mail.db.idle_limit is 30000000. Search for the number of zeros that you have 300000 only in stock, then it is causing Mozilla Thunderbird Freezes Thunderbird Error 794401.
Note: No need to Restart Mozilla Thunderbird for activating the change. It does not provides immediate improvement in usage of CPU .

Know the Reason Behind the Working of this Method

As per records, Mozilla Thunderbird closes database after every 5 minutes due to Inactivity. Re-opening the database is dam expensive in case we have large mailboxes.
If we try to open the database forcefully, corruption occurs in the system because Mozilla Thunderbird Freezes and Hammering CPU Performance.

Demerits of Manual Approach

Though it seems quite easy and interesting to resolve any error manually, in actual it is very difficult. In case any step implemented in the wrong method, it can lead to corruption in MBOX files. Despite the method benedicts users with pocket friendliness but it can even lead to numerous problems like sudden CPU freezing due to thunderbird running extremely slow, corruption in MBOX files etc. So, the proper alternative to overcome this problem is SysTools Mac MBOX Converter Wizard.

Best Solution to Resolve Thunderbird Errors

The users seem reckless buying a product, but if you will toggle more about this product you will come across more wonderful features among which few have been mentioned below:
1. Retains the email structure after converting the emails
2. Allows to Transfer data file from Thunderbird in batch in a single go
3. Holds the Inline Images and HTML formatting of email body
4. Compatible with all the Mac Operating System Versions
5. Offers with naming convention and email filtration option
6. Restores all the Corrupted MBOX Files with an ease
And if we see the other side of the problem there is no manual solution to resolve Thunderbird Hammering CPU Error in Windows Arena. So, the users are bound to go for third party software. We have come across numerous tools that claims restoration of Thunderbird MBOX files but do not serve up to users expectations. So, one of the best product that we have used is Windows MBOX File Converter tool.

The Final Note

The entire write-up narrates the users regarding the topic How to Stop Thunderbird Hammering CPU Error 794401. The content solely declares that it will help users with a complete guide using which the error can be resolved.

  author

By Kumar Raj

A versatile writer with the vast knowledge of technology helps to reduce the gap between a user and technology. Provides easy and reliable ways to resolve multiple technical issues, which users encounter in their day-to-day life.