how to fix error code 4 Facebook

Step 1: Repair Registry Entries Associated with Error 4
Step 2: Conduct a Full Malware Scan of Your PC
Step 3: Clean Out Your System Junk (Temporary Files and Folders) With Disk Cleanup (cleanmgr)
Step 4: Update Your PC Device Drivers
Step 5: Utilize Windows System Restore to "Undo" Recent System Changes
If you are unable to fix this  Problem,so You May Call Facebook Helpline Number (+1-844-476-2432) get to resolved instantly