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Advanced>Network>Offline Storage no longer shows amount of cache

  • 8 replies
  • 2 have this problem
  • 3 views
  • Last reply by tlocane

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I used to be able to see the amount of disk space being used by Firefox before clearing the cache in Preferences>Advanced>Network>Offline Storage. Now, after upgrading to version 6.0 on my Mac, it no longer shows the amount and I am not sure the clear cache is even working. Is there a fix for this?

I used to be able to see the amount of disk space being used by Firefox before clearing the cache in Preferences>Advanced>Network>Offline Storage. Now, after upgrading to version 6.0 on my Mac, it no longer shows the amount and I am not sure the clear cache is even working. Is there a fix for this?

Modified by tlocane

Chosen solution

Make sure that you do not run Firefox in permanent Private Browsing mode.

  • https://support.mozilla.com/kb/Private+Browsing
  • You enter Private Browsing mode if you select: Firefox > Preferences > Privacy > History: Firefox will: "Never Remember History"
  • To see all History and Cookie settings, choose: Firefox > Preferences > Privacy, choose the setting Firefox will: Use custom settings for history
  • Deselect: [ ] "Permanent Private Browsing mode"
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All Replies (8)

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Try this: type or paste about:cache in the location bar and press Enter.

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This is what I get:

Information about the Cache Service Disk cache device Number of entries: 67 Maximum storage size: 1048576 KiB Storage in use: 1114 KiB Cache Directory: /Users/username/Library/Caches/Firefox/Profiles/0hsp878e.default/Cache List Cache Entries


Offline cache device Number of entries: 0 Maximum storage size: 512000 KiB Storage in use: 0 KiB Cache Directory: /Users/username/Library/Caches/Firefox/Profiles/0hsp878e.default/OfflineCache

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Sorry ... I was on the wrong computer ... NOT the one with the problem. Duh!

Here's what I get on the computer w/ the issue:

Information about the Cache Service Memory cache device Number of entries: 54 Maximum storage size: 32768 KiB Storage in use: 407 KiB Inactive storage: 407 KiB List Cache Entries


Offline cache device Number of entries: 0 Maximum storage size: 512000 KiB Storage in use: 0 KiB Cache Directory: /Users/username/Library/Caches/Firefox/Profiles/f4rbvp17.default/OfflineCache

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In your first post you have a "Disk cache" entry but in the second one you only have a "Memory cache" entry. Is caching to disk disabled on the second system? (I think if you override automatic cache management and set the size to zero, that could disable it.)

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The second post is on the actual computer that is having the problem not displaying the disk cache. I don't have the box checked for "Override Automatic Cache Management."

Is there a prefs file that deals w/ disk cache that may have gotten corrupted, and can it be deleted safely?

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I think I may have solved my problem. I located the cache prefs files in:

/Users/username/Library/Caches/Firefox/Profiles/f4rbvp17.default/Cache

I quit Firefox, then removed the folder, "f4rbvp17.default" and restarted Firefox. It created a new folder and now my Prefs show the Offline Storage as it's supposed to. Apparently one or more of the files got corrupted. All seems to be working now. Thx.

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Chosen Solution

Make sure that you do not run Firefox in permanent Private Browsing mode.

  • https://support.mozilla.com/kb/Private+Browsing
  • You enter Private Browsing mode if you select: Firefox > Preferences > Privacy > History: Firefox will: "Never Remember History"
  • To see all History and Cookie settings, choose: Firefox > Preferences > Privacy, choose the setting Firefox will: Use custom settings for history
  • Deselect: [ ] "Permanent Private Browsing mode"

Modified by cor-el

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Thx cor-el. I never run Firefox in Private Browsing Mode. I checked all my Prefs settings and all was correct. I do think it was one of the files in the folder I mentioned above was corrupted.