wi-fi has the self-assigned ip address and will not be able to connect to the internet

When I ran the diagnostic tool it tells me that the computer can not find an IP address and to contact the ISP to troubleshoot the issue

1. It did still have the same issue inside of a new user account.

Here's the report...

EtreCheck version: 5.0.2 (5015)

Report generated: 2018-11-26 22:07:33

Download EtreCheck from https://etrecheck.com

Runtime: 11:05

Performance: Poor

Sandbox: Enabled

Full drive access: Disabled

Problem: Other problem

Description:

My laptop is not connecting to the wifi at one specific router. I get an error message that says wi-fi has the self-assigned ip address and will not be able to connect to the internet"

Major Issues:

Anything that appears on this list needs immediate attention.

No Time Machine backup - Time Machine backup not found.

Failing hard drive - This machine has an older, mechanical hard disk that appears to be failing.

Unsigned files - There are unsigned software files installed that could be adware and should be reviewed.

Minor Issues:

These issues do not need immediate attention but they may indicate future problems.

Upgradeable hard drive - This machine’s hard drive could be replaced with an SSD. This would dramatically improve your machine’s performance.

Out of RAM - This machine is running short on RAM and has a mechanical hard drive, reducing the speed of the virtual memory system.

High battery cycle count - Your battery may be losing capacity.

Corrupt filesystem - This machine shut down due to a corrupt filesystem.

Clean up - There are orphan files that could be removed.

32-bit Apps - This machine has 32-bits apps that may have problems in the future.

Abnormal shutdown - Your machine shut down abnormally.

Hardware Information:

MacBook Pro (13-inch, Mid 2012)

MacBook Pro Model: MacBookPro9,2

1 2.5 GHz Intel Core i5 (i5-3210M) CPU: 2-core

10 GB RAM - At maximum

BANK 0/DIMM0 - 8 GB DDR3 1600 ok

BANK 1/DIMM0 - 2 GB DDR3 1600 ok

Battery: Health = Replace Soon - Cycle count = 1141

Video Information:

Intel HD Graphics 4000 - VRAM: 1536 MB

Color LCD 1280 x 800

Drives:

disk0 - APPLE HDD HTS545050A7E362 500.11 GB (Mechanical - 5400 RPM)

Internal SATA 3 Gigabit Serial ATA

disk0s1 - EFI (MS-DOS FAT32) [EFI] 210 MB

disk0s2 [APFS Container] 499.90 GB

disk1 [APFS Virtual drive] 499.90 GB (Shared by 4 volumes)

disk1s1 - Macintosh HD (APFS) (Shared - 461.31 GB used)

disk1s2 - Preboot (APFS) [APFS Preboot] (Shared)

disk1s3 - Recovery (APFS) [Recovery] (Shared)

disk1s4 - VM (APFS) [APFS VM] (Shared - 6.44 GB used)

Mounted Volumes:

disk1s1 - Macintosh HD 499.90 GB (31.45 GB free)

APFS

Mount point: /

Encrypted

disk1s4 - VM [APFS VM] (Shared - 6.44 GB used)

APFS

Mount point: /private/var/vm

Network:

Interface en0: Ethernet

Interface fw0: FireWire

Interface en1: Wi-Fi

802.11 a/b/g/n

Interface en4: iPhone

Interface en3: Bluetooth PAN

Interface bridge0: Thunderbolt Bridge

System Software:

macOS Mojave 10.14 (18A391)

Time since boot: About 4 days

Security:

Unsigned Files:

Launchd: /Library/LaunchDaemons/com.privax.osx.provpn.update.plist

Executable: /Library/Application Support/HmaProVpn/components/update/update.sh

Details: Exact match found in the whitelist - probably OK

Launchd: /Library/LaunchDaemons/com.privax.osx.provpn.init.plist

Executable: /Library/Application Support/HmaProVpn/hub/init.sh

Details: Exact match found in the whitelist - probably OK

Launchd: ~/Library/LaunchAgents/com.privax.osx.provpn.home.userinit.plist

Executable: ~/Library/Application Support/HmaProVpn/hub/userinit.sh

Details: Exact match found in the whitelist - probably OK

Launchd: /Library/LaunchDaemons/com.privax.osx.provpn.uninstall.plist

Executable: /Library/Application Support/HmaProVpn/hub/autouninstall.sh

Details: Exact match found in the whitelist - probably OK

Launchd: ~/Library/LaunchAgents/com.citrixonline.GoToMeeting.G2MUpdate.plist

Executable: ~/Library/Application Support/CitrixOnline/GoToMeeting/G2MUpdate

Details: Exact match found in the whitelist - probably OK

Launchd: /Library/LaunchAgents/com.privax.osx.provpn.userinit.plist

Executable: /Library/Application Support/HmaProVpn/hub/userinit.sh

Details: Exact match found in the whitelist - probably OK

Launchd: /Library/Application Support/HmaProVpn/hub/launchd/com.privax.osx.provpn.racoonrun.plist

Executable: /Library/Application Support/HmaProVpn/hub/modules/030_racoonrun.sh backup

Launchd: /Library/LaunchDaemons/com.prey.agent.plist

Executable: /usr/local/lib/prey/current/bin/prey

Details: Exact match found in the whitelist - probably OK

Launchd: ~/Library/LaunchAgents/com.logmein.GoToMeeting.G2MUpdate.plist

Executable: ~/Library/Application Support/LogMeInInc/GoToMeeting/G2MUpdate

Details: Exact match found in the whitelist - probably OK

32-bit Applications:

18 32-bit apps

Kernel Extensions:

/System/Library/Extensions

TelestreamAudio.kext (1.1.0 - SDK 10.8)

System Launch Agents:

System Launch Daemons:

Launch Agents:

Launch Daemons:

User Launch Agents:

User Login Items:

96HLSU34RN.com.privax.osx.provpn.helper (Privax LTD - installed 2018-11-15)

(/Applications/HMA! Pro VPN.app/Contents/Library/LoginItems/96HLSU34RN.com.privax.osx.provpn.helper.app )

Dropbox.app (Dropbox, Inc. - installed 2018-11-07)

(/Applications/Dropbox.app)

Flux.app (Michael Herf - installed 2018-05-03)

(/Applications/Flux.app)

OnScreen Control.app (LG Electronics - installed 2018-01-17)

(/Applications/OnScreen Control.app)

TextExpander.app (? - installed 2018-01-21)

(/Applications/TextExpander.app)

breaktimelauncher (App Store - installed 2017-01-17)

(/Applications/BreakTime.app/Contents/Library/LoginItems/breaktimelauncher.app)

Internet Plug-ins:

NPMySpeedPlugin: 6.2 (installed 2015-09-23)

FlashPlayer-10.6: 31.0.0.153 (installed 2018-11-20)

QuickTime Plugin: 7.7.3 (installed 2018-09-20)

Flash Player: 31.0.0.153 (installed 2018-11-20)

PepperFlashPlayer: 31.0.0.153 (installed 2018-11-21)

SharePointBrowserPlugin: 14.7.3 (installed 2017-05-01)

3rd Party Preference Panes:

Flash Player (installed 2018-11-15)

Time Machine:

Time Machine Not Configured!

Performance:

System Load: 1.10 (1 min ago) 1.94 (5 min ago) 2.49 (15 min ago)

Nominal I/O speed: 0.12 MB/s

File system: 120.67 seconds (timed out)

Write speed: 5 MB/s

Read speed: 16 MB/s

CPU Usage:

Top Processes by CPU:

Top Processes by Memory:

Top Processes by Network Use:

Virtual Memory Information:

Software Installs (past 30 days):

Clean up:

/Library/LaunchAgents/com.teamviewer.teamviewer_desktop.plist

/Applications/TeamViewer.app/Contents/Helpers/TeamViewer_Desktop

Executable not found

/Library/LaunchAgents/com.teamviewer.teamviewer.plist

/Applications/TeamViewer.app/Contents/MacOS/TeamViewer

Executable not found

~/Library/LaunchAgents/com.lastpass.LastPassHelper.plist

~/Library/Application Support/LastPass/LastPassHelper.app/Contents/MacOS/LastPassHelper

Executable not found

/Library/LaunchDaemons/com.teamviewer.teamviewer_service.plist

/Applications/TeamViewer.app/Contents/MacOS/TeamViewer_Service

Executable not found

Diagnostics Information (past 7 days):

2018-11-22 08:42:05 Last Shutdown Cause: -60 - Corrupt filesystem

Directory /Library/Logs/DiagnosticReports is not accessible without Full Drive Access.

End of report

I get this when I open the wifi (holding down the opt key for details)

" I think of reinstallation of Mac"

What do you mean? Reinstall the OS?

1. Tried to remove the network settings completely and then again set it up see this article How to troubleshoot Wi-Fi connectivity - Apple Support

2. I tested this in a new user account and yes it does still have the same issue

3. I upgraded to the new OS Mojave a couple of days ago and I'm still having the same issue