We're calling on all EU-based Mozillians with iOS or iPadOS devices to help us monitor Apple’s new browser choice screens. Join the effort to hold Big Tech to account!

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

Set cache to zero is not honored

  • 3 replies
  • 1 has this problem
  • 2 views
  • Last reply by Onno Ekker

more options

winXP, Thunderbird 52.6.0 (32-bit)

Tools, Options, Advanced, Network & Disk Space ... set cache from 350 to zero, click ok. Restart Thunderbird, cache is still 350.

Tested on Linux Mint 18.2, Thunderbird 52.6.0 (64-bit) same behavior.

ps. I set cache to zero so when I backup my profile, I don't want to copy all those cache files that increase the backup file size.

winXP, Thunderbird 52.6.0 (32-bit) Tools, Options, Advanced, Network & Disk Space ... set cache from 350 to zero, click ok. Restart Thunderbird, cache is still 350. Tested on Linux Mint 18.2, Thunderbird 52.6.0 (64-bit) same behavior. ps. I set cache to zero so when I backup my profile, I don't want to copy all those cache files that increase the backup file size.

Chosen solution

Ah... apparently the size is recalculated. Go to the Config Editor (Tools > Options > Advanced > General > Config Editor > I accept the risk!) and toggle the pref browser.cache.disk.smart_size.enabled to false. Now you can set the cache size to 0 and it won't be recalculated.

Read this answer in context 👍 1

All Replies (3)

more options

Dit you press the Clear Now button? Otherwise your cache won;t change…

more options

The issue is not about the clear button; the issue is that I change the 350 to zero, click OK, restart Thunderbird but it still stays at 350.

more options

Chosen Solution

Ah... apparently the size is recalculated. Go to the Config Editor (Tools > Options > Advanced > General > Config Editor > I accept the risk!) and toggle the pref browser.cache.disk.smart_size.enabled to false. Now you can set the cache size to 0 and it won't be recalculated.