Are you getting “100 Unsupported Post Request” error on Facebook.
Many people facing issue in Facebook as they are getting “Login failed,  Unsupported Post Request” error.
People are getting logged out from Facebook.
After that if they try to login again, getting “Login failed,  Unsupported Post Request” error.
One per wrote on Twitter, “Im not so sure if its hacked or anything- I logged out my account from all devices.
Changed my password, and when i tried logging in again it keep saying  unsupported post request”.
In this article, we will discuss why 100 Unsupported Post Request error occurred on Facebook and how to fix it.
Why Does “100 Unsupported Post Request” Occurred On Facebook?
If 100 Unsupported Post Request error occurred on Facebook, It can happen because either you are suing outdated verthere is some bug/ glitch in the Facebook app.
Also, Its possible that you are using Facebook app version which is uns
How To Fix “100 Unsupported Post Request” On Facebook?
Fix 1: Clear Facebook App Cache
Most of time, when there is some issue with Facebook app, clearing the app cache will resolve the issue.
So, To fix the Facebook 100 Unsupported Post Request error, clear Facebook app cache.
To clear the Facebook App cache,
For Android users, Go to settings >> Find Facebook App and click on that >> Tap on clear cache >> Facebook App cache will be cleared.
For iPhone users, Go to iPhone settings >> Go to General >> Find Facebook App and click on that >> Tap on iPhone Storage >> Tap on Offload App button >> Again Reinstall Facebook app.
After clearing the cache , Also update the Facebook app to latest version.
Now, try to login into Facebook app and check you are getting error or not.
If still you are getting same error then try out other fixes.
Note: Available screens, settings or steps for clearing the cache may vary by software version, and phone model.
Fix 2: Install Old Version Of Facebook
First uninstall Facebook app then you can install the old version of Facebook app.
Sometime there might be some bug in the latest version.
So, for temporary install old version till next version came after fixing the bug.
But this temporary fix only work for android users not iPhone users.
You can download old Facebook app version from here:
Fix 3: Check Compatibility Of Facebook App With Your Device
If you are getting 100 Unsupported Post Request error on Facebook app on your device, then first check compatibility of your device with Facebook app.
If your device is not compatible with the Facebook app then use another device which is compatible with Facebook app, Facebook app will work fine and the issue will be resolved.
Fix 4: Wait For 24-48 Hours
If you are getting 100 Unsupported Post Request error on Facebook then there are chances that there are some bug or glitch in Facebook App.
There are many ways to check if Facebook server is down or if there is some bug/ glitch in Facebook.
First way is go to downdetector >> Search for Facebook >> check if there is spike in the graph or not.
If there is spike then either Facebook server is down or there is some bug.
Another way is just search on Twitter “Facebook down”.
You can check latest tweets regarding same or not.
In this case, you can’t do anything so just wait for some time until the bug is resolved by Facebook team or Facebook server is up.
Fix 5: Contact Facebook Support Team
After performing the above fixes, if you are still getting 100 Unsupported Post Request error then contact Facebook support team.
Explain your issue properly to Facebook support team.
After that follow the Facebook team instruction.
They will help you to fix your Facebook app related issue.
To Fix 100 Unsupported post request error on Facebook, Clear Facebook app cache and update Facebook app to latest version.
This will fix your issue.
Alternately, If there is some bug or glitch in Facebook App.
So, in this case wait till the bug is resolved by Facebook team.
After that also update the Facebook app to latest version if available and Facebook App will work fine.
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