This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Avatar for Username

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

This thread was archived. Please ask a new question if you need help.

storage/permanent/chrome/idb/ strange files

  • 2 replies
  • 3 have this problem
  • 6 views
  • Last reply by philipp

user1071620
user1071620
more options

Hello, recently I found these files: C:\Documents and Settings\[name]\Application Data\Mozilla/Firefox/[number].default/storage/permanent/chrome C:\Documents and Settings\[name]\Application Data\Mozilla/Firefox/[number].default/storage/permanent/chrome/.metadata C:\Documents and Settings\[name]\Application Data\Mozilla/Firefox/[number].default/storage/permanent/chrome/idb C:\Documents and Settings\[name]\Application Data\Mozilla/Firefox/[number].default/storage/permanent/chrome/idb/2918063365piupsah.files C:\Documents and Settings\[name]\Application Data\Mozilla/Firefox/[number].default/storage/permanent/chrome/idb/2918063365piupsah.sqlite I can delete them, but they reappear with every Mozilla restart. also, in the folder ...\storage\permanent\chrome\idb temporarily appearing (for couple of seconds) two files - 2918063365piupsah.sqlite-shm (32 kb) and 2918063365piupsah.sqlite-wal (0 kb)

Are those files (2918063365piupsah.sqlite / 2918063365piupsah.sqlite-shm / 2918063365piupsah.sqlite-wal) SAFE (that's the most important question)? Really weird names and location. And what are those? What makes them appear?

[Firefox 44.0.2. Windows XP. Three antiviruses didn't show anything suspicious]

Hello, recently I found these files: C:\Documents and Settings\[name]\Application Data\Mozilla/Firefox/[number].default/storage/permanent/chrome C:\Documents and Settings\[name]\Application Data\Mozilla/Firefox/[number].default/storage/permanent/chrome/.metadata C:\Documents and Settings\[name]\Application Data\Mozilla/Firefox/[number].default/storage/permanent/chrome/idb C:\Documents and Settings\[name]\Application Data\Mozilla/Firefox/[number].default/storage/permanent/chrome/idb/2918063365piupsah.files C:\Documents and Settings\[name]\Application Data\Mozilla/Firefox/[number].default/storage/permanent/chrome/idb/2918063365piupsah.sqlite I can delete them, but they reappear with every Mozilla restart. also, in the folder ...\storage\permanent\chrome\idb temporarily appearing (for couple of seconds) two files - 2918063365piupsah.sqlite-shm (32 kb) and 2918063365piupsah.sqlite-wal (0 kb) Are those files (2918063365piupsah.sqlite / 2918063365piupsah.sqlite-shm / 2918063365piupsah.sqlite-wal) SAFE (that's the most important question)? Really weird names and location. And what are those? What makes them appear? [Firefox 44.0.2. Windows XP. Three antiviruses didn't show anything suspicious]

All Replies (2)

user1071620
user1071620 Question owner
more options

sorry, text messed up for some reason here two pics to clarify this

philipp
philipp
  • Moderator
more options

hi, these folder structures are created when websites make use of the storage web apis like indexeddb: https://developer.mozilla.org/en-US/docs/Web/API/IndexedDB_API