Why fb log me out?

Hello
Im using dolphin to manage some fb profiles but every few days when I open the profile I find it loged out and have to login again that that pop up show of "trust this device"
so it act as if i log in from new device each time
Use stable proxy, keep same Dolphin fingerprint, and save cookies — that prevents FB from asking “trust this device” each time
 
Your problem sounds like inconsistent browser fingerprinting or IP changes. Double-check your Dolphin settings to make sure your user agent, timezone, and IP are rock-solid consistent for each profile. Even small fluctuations can trigger that new device prompt.
 
That’s just FB flagging your browser fingerprint, dolphin makes it look like a fresh device each time.
 
Maintaining your digital fingerprint is paramount. Never create new sessions constantly, as constantly changing parameters (like IP, browser) will cause your profile to be flagged for suspected multi-account or multi-location logins.
 
Try to contact Doplhin support about that, thay answer in the live chat format so it shouldn't take too long.
 
It looks like a cookie problem. Or sanctions due to a proxy/poor-quality Facebook fingerprint. I would recommend trying an alternative browser to see if you encounter the same issues. For a high-quality, free option to test, you can try Linken Sphere or Adspower.
 
Hello
Im using dolphin to manage some fb profiles but every few days when I open the profile I find it loged out and have to login again that that pop up show of "trust this device"
so it act as if i log in from new device each time
That usually happens when Facebook detects a new fingerprint or IP change. Make sure your setup keeps a consistent browser fingerprint, cookies, and proxy for each profile, that’s what helps FB recognize the same device. Also, avoid clearing data or switching environments too often. Stability is key to keeping sessions trusted.
 
Hello
Im using dolphin to manage some fb profiles but every few days when I open the profile I find it loged out and have to login again that that pop up show of "trust this device"
so it act as if i log in from new device each time
That “trust this device” issue happens when FB detects a new fingerprint or IP each login. Make sure your setup uses stable proxies, consistent browser fingerprints, and avoids clearing cookies or cache. If you’re managing accounts legitimately, try using Meta Business Suite or Facebook Pages Manager — they handle multi-account access more reliably.
 
Hello
Im using dolphin to manage some fb profiles but every few days when I open the profile I find it loged out and have to login again that that pop up show of "trust this device"
so it act as if i log in from new device each time
Yeah, FB does this when it thinks you’re logging in from a new device. If your setup keeps changing, logouts are pretty much expected.
 
Hello
Im using dolphin to manage some fb profiles but every few days when I open the profile I find it loged out and have to login again that that pop up show of "trust this device"
so it act as if i log in from new device each time
This usually happens when Facebook sees the session as a new environment each time. Even if you’re using Dolphin, things like changing proxies, unstable IPs, cleared cookies, or small fingerprint changes can trigger that “new device” check. If the profile setup isn’t staying fully consistent between sessions, FB will keep logging it out and asking to trust the device again. Making sure each profile always opens with the same proxy, cookies saved, and no major changes in settings usually reduces this behavior.
 
Honestly, it’s hard to say for sure whether the issue comes from Dolphin or from Facebook itself. Even logging into Facebook on a real Chrome browser can sometimes result in getting logged out, so the platform can be unpredictable at times. Of course, if you feel the need to test other antidetect browsers, you can try Multilogin, GoLogin, Hidemyacc, etc. But it’s still important to check carefully whether the problem is coming from the platform, proxy changes, or some other factor, rather than assuming it’s only the antidetect tool.
 
Honestly, it’s hard to say for sure whether the issue comes from Dolphin or from Facebook itself. Even logging into Facebook on a real Chrome browser can sometimes result in getting logged out, so the platform can be unpredictable at times. Of course, if you feel the need to test other antidetect browsers, you can try Multilogin, GoLogin, Hidemyacc, etc. But it’s still important to check carefully whether the problem is coming from the platform, proxy changes, or some other factor, rather than assuming it’s only the antidetect tool.
Logged in on my chrome profile for more than a year and never asked me to login again
 
I totally understand the frustration, Limon. It sounds like you're experiencing the issue due to Facebook's increased security measures. To add to the previous suggestions, have you tried setting a static user agent in Dolphin as well, to ensure that Facebook sees the same browser signature every time? This, combined with a locked fingerprint, consistent proxy, and timezone, should help reduce the frequency of logouts and "trust this device" prompts. What type of proxy are you currently using, and have you noticed any patterns to when the logouts occur?
 
This usually isn’t because Dolphin “logs you out,” but because Facebook detects a change in device fingerprint or session consistency.
Even if you’re using the same Dolphin profile, things like:
  • IP rotation (especially mobile/proxy with unstable ASN)
  • Time gap between logins
  • Browser core or extension updates
  • Cookie/session expiration
  • Inconsistent timezone / OS signals
can make Facebook treat it as a new device, triggering the “Trust this device” prompt.
A few things that help reduce this:
  • Use static or long-session proxies (avoid aggressive rotation)
  • Keep timezone, OS, language aligned with proxy location
  • Avoid opening the same account from multiple environments
  • Let accounts “rest” instead of logging in every few days just to check
  • Don’t clear cookies or reset profiles unless necessary
Dolphin itself is just a container — stability mostly depends on fingerprint + network consistency, not the tool alone.
 
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