Office Installation Error Code 1605: Why It Happens and How to Fix It

When you get Office Error Code 1605, it’s a pain if you’re doing something important. This error happens when there are problems installing or uninstalling Microsoft Office programs. Knowing why it happens and how to fix it can help you get back to work .

Why Office Error Code 1605 Happens:

Installation or Uninstallation Not Finished: If a past installation or uninstallation of Microsoft Office didn’t finish right, it can leave behind files or registry stuff that cause Error Code 1605.

Messed Up Registry Entries: Changes in the Windows registry from software installs or updates can sometimes lead to errors when installing or uninstalling Office programs.

Other Software Getting in the Way: Antivirus programs, firewalls, or other security software might mess with Office installs causing errors like 1605.

File Permission Problems: Not having enough permissions on certain files or folders needed for the install or uninstall process can stop Office from finishing the job.

How to Fix Office Error Code 1605:

Use Microsoft’s Fix It Tool:

Microsoft has a Fix It tool that’s made to automatically find and fix problems that stop Microsoft Office programs from being installed or removed . This tool can often fix Error Code 1605 quickly by dealing with common issues .

Do a Clean Boot:

A clean boot starts Windows with just the basics, which can help figure out if another app is causing the install issue. To do a clean boot:

• Press Windows + R to open Run.
  
• Type msconfig and hit Enter.
  
• Go to Services, check Hide all Microsoft services then click Disable all.
  
• Go to Startup and click Open Task Manager. Turn off all startup items.
  
• Close Task Manager and click OK on the System Configuration window.
  
• Start your computer again and try to reinstall Office.
  

Manually Get Rid of Old Office Installs:

If there are leftovers from old Office installs causing problems remove them by deleting Office-related folders and registry keys. Be careful when messing with the registry, as wrong changes can cause serious problems with your computer.

Check and Fix Disk Permissions:

Use Windows’ built-in tools to check and fix disk permissions. Wrong file permissions can stop Office from installing or uninstalling . Right-click on your hard drive in File Explorer, go to Properties -> Tools -> Check.

Install Office in Safe Mode:

Sometimes installing Office in Safe Mode can get around issues caused by other software getting in the way. To do this:

• Start your computer again.
  
• Hold the Ctrl key and click on the Office app to open it.
  
• Click Yes when asked to start in Safe Mode.