I can't get my Officejet 8620 to install. Was working fine then recently said I needed to install.

[steveplant11]

Officejet 8620 was working fine.  Two days ago after clicking the icon to open it said I needed to install.  Installation failed even after downloading new drivers and installation software.  Network is fine.  Laptop finds the printer fine.

[Dragon-Fur]

@steveplant11 

The software is not apparently (re)installing fully, in spite of any indications to the contrary.

I can offer the following...

Operating system / version not included - the following is relevant to Windows...

There are some things to try - the printer software is old but it may still be compatible with the latest Windows 10.

Your printer's Full Feature Software

HP Officejet Pro 8620 e-All-in-One Printer series Full Feature Software and Drivers

(Start)

Easy stuff first...

The Print and Scan Doctor – Which Doctor?

The Doctor can help with several issues, including driver, connection, and "jobs stuck in the queue".

HP Print and Scan Doctor for Windows

Wait!

Having offline, installation, or odd connection issues?

Use this version of the Doctor first:

HPPSdr.exe

Information / version file

HPPSdr.xml

and / or

Method - Create TCP IP port

** Install – Optional - Port Issues - Create a TCP/IP port **

TCP/IP can resolve odd connection, scanning, and installation problems.

Create / Switch to a TCP/IP Port to facilitate communication and prevent ‘offline’ issues

How-to “Create TCP Port” Contributed by  greenturtle

1. Print a Configuration Page to get the printer's IPv4 address (you can also tap on the wireless icon on the Front panel of your Printer to get the IP address)
2. On your PC, go to Control Panel, from Devices and Printers, Right-Click the printer and Left-Click Printer Properties, select the Ports tab.
3. Click Add Port, select Standard TCP/IP Port, then select New Port and follow the wizard.
4. Type in the proper IP address for the printer.

This video resource will show you how to do it:
Create & Use TCP IP port

Note that you can ALWAYS revert back to the original port that the HP software installed by selecting the HP port under the Ports tab (in Printer Properties)

================================================================

Try installing your printer...

No joy?

"All the bits"

Read, then do.

Printer Software – Blocked in Security Software

Check your Security Software to make sure the printer software is not being blocked.  Most Security software will allow you to make an exception for applications / software you want to use on your computer.

If you make changes to the security software setup, Restart your computer and log in.

Uninstall Existing Full Feature Software

Uninstall existing printer software from Programs and Features

Method One - Control Panel > icon view > Programs and Features >

Search or Scroll down

Uninstall the printer software

After the software is removed, Restart the computer and log in

If printer software will not uninstall, appears to be removed and then shows up again, or is otherwise not “going away” when you tell it to do so, try an Uninstaller program.

Microsoft:  Fix problems that block programs from being installed or removed

Remove - Printer Drivers – Lurking in Devices and Printers

Check / Remove

Control Panel > icon view > Devices and Printers

Left-Click on any unwanted Printer found in the Printers list

Clicking on a printer, displays options along the ribbon (near the top of the Devices and Printers window)

Click Print Server Properties > tab Drivers

Click on Driver(s) in list, select Remove > OK to exit menu

Back in Devices and Printers > Right-Click on the printer > Remove Device

If any devices are removed, Restart the computer and log in

Remove – Print Server Properties  / Printers in Print Manager

There are several ways to get to this data - choose one with which you are comfortable and that works on your version of Windows.

Method – Print Server Properties

Control Panel > icon view > Devices and Printers > Left-Click on any printer device (even OneNote)

Along the horizontal ribbon, Open Print server properties > Tab Drivers

or

Windows key + r (opens "run" window) > type printui.exe /s /t2

Next

Left-Click on each printer entry > Highlight and Remove

Complete this action for every instance of every printer entry you find in the list you have open.

Click OK to save changes and exit the menu

OR

(Alternate) Method – Print Management

Pro versions of Windows:

Control Panel > icon view > Administrator Tools > Print Management

or

Windows key + r (opens "run" window) > type printmanagement

Next

Open Section Custom Filters > Open Subsection All Drivers 

Right-Click on each printer entry to Highlight and Delete

Delete / remove every instance of every printer entry you find in the list 

or 

Open Section Print Servers > Open Subsection Your computer (Local) > Open Subsection Drivers

Right-Click on each printer entry to Highlight and Delete

Delete / remove every instance of every printer entry you find in the list 

Check / Remove - Printer Software – Lurking in the Device Manager

Check / Remove

Control Panel > icon view > Device Manager

Expand category Printers

If any unwanted printer name or “Unknown Device” is listed,

Right-Click on the printer / device > Uninstall

Expand category Imaging Devices

If any unwanted printer name or “Unknown Device” is listed,

Right-Click on the printer / device > Uninstall

If any devices are removed from the Device Manager, Restart the computer and log in

Check / Remove  - Printer Software – Lurking in the User Account

This is option is generally only necessary when other options have failed.

Check / Remove

Clear Temp Folder in AppData

Method One >> Open File Explorer > Navigate to C:\Users\YourAccount\AppData\Local\Temp

OR

Method Two >> Windows key + X + R (Run command) > type %temp%

Delete the files in the Temp folder (It is expected that some files cannot be deleted, ignore these)

Restart the computer and log in

Clear HP Printer mention in AppData\Local\HP

Open File Explorer > Navigate to C:\Users\YourAccount\AppData\Local\HP

Remove / Delete any folder named for the printer you wish to remove

Reminder: 

• HP Smart for Windows is an application - it is found in Settings > Apps > Apps and Features
• There is unlikely any "HP Smart printer software bits" from the application in your AppData folder.

Installation – Full Feature Software

• Open Category Software and Drivers (possibly subcategory Software-Utility) in your printer Support Website  
• Download-and-Save the Full Feature Software / Print and Scan Driver and Accessories or HP Easy Start Printer Setup for your Operating System version.

• Open File Explorer
• Navigate to the folder in which you saved the installation file  (likely Downloads)
• Right-Click on the installation package and “Run as Administrator”
• After the software is installed, Restart the computer and log in

NOTES

If using USB, disconnect the USB cable between the printer and the computer before starting the installation.  Connect the cable when instructed to do so (toward the end of the installation procedure).

Both the HP Smart Application and the Full Feature Software can be installed on the same computer.

Reference and Resources – (More) Places to find help, solve problems, and learn how to use your Printer

Printer Homepage – “Things that are your printer”

NOTE:  Content depends on device type and Operating System

Categories:  Alerts, Access to the Print and Scan Doctor (Windows), Warranty Check, HP Drivers / Software / Firmware Updates, How-to Videos, Bulletins/Notices, Lots of How-to Documents, Troubleshooting, User Guides / Manuals, Product Information (Specifications), more

When the website support page opens, Select (as available) a Category > Topic > Subtopic

HP Officejet Pro 8620 e-All-in-One Printer series

Thank you for participating in the HP Community Forum.

We are a world community of volunteers dedicated to supporting HP technology