What is osfinstaller.exe?

osfinstaller.exe is part of Microsoft Office 2016 and developed by Microsoft Corporation according to the osfinstaller.exe version information.

osfinstaller.exe's description is "Microsoft Office OsfInstaller"

osfinstaller.exe is digitally signed by Microsoft Corporation.

osfinstaller.exe is usually located in the 'C:\Program Files (x86)\Microsoft Office\root\VFS\ProgramFilesCommonX86\Microsoft Shared\Office16\' folder.

None of the anti-virus scanners at VirusTotal reports anything malicious about osfinstaller.exe.

If you have additional information about the file, please share it with the FreeFixer users by posting a comment at the bottom of this page.

Vendor and version information [?]

The following is the available information on osfinstaller.exe:

Product nameMicrosoft Office 2016
Company nameMicrosoft Corporation
File descriptionMicrosoft Office OsfInstaller
Original filenameOSFINSTALLER.EXE
Product version16.0.10228.20080
File version16.0.10228.20080

Here's a screenshot of the file properties when displayed by Windows Explorer:

Product nameMicrosoft Office 2016
Company nameMicrosoft Corporation
File descriptionMicrosoft Office OsfInstaller
Original filenameOSFINSTALLER.EXE
Product version16.0.10228.20080
File version16.0.10228.20080

Digital signatures [?]

osfinstaller.exe has a valid digital signature.

Signer nameMicrosoft Corporation
Certificate issuer nameMicrosoft Code Signing PCA
Certificate serial number33000001797c2e574e52e1cad6000100000179

VirusTotal report

None of the 68 anti-virus programs at VirusTotal detected the osfinstaller.exe file.

None of the 68 anti-virus programs detected the osfinstaller.exe file.

Hashes [?]


Error Messages

These are some of the error messages that can appear related to osfinstaller.exe:

osfinstaller.exe has encountered a problem and needs to close. We are sorry for the inconvenience.

osfinstaller.exe - Application Error. The instruction at "0xXXXXXXXX" referenced memory at "0xXXXXXXXX". The memory could not be "read/written". Click on OK to terminate the program.

Microsoft Office OsfInstaller has stopped working.

End Program - osfinstaller.exe. This program is not responding.

osfinstaller.exe is not a valid Win32 application.

osfinstaller.exe - Application Error. The application failed to initialize properly (0xXXXXXXXX). Click OK to terminate the application.

What will you do with the file?

To help other users, please let us know what you will do with the file:

What did other users do?

The poll result listed below shows what users chose to do with the file. 81% have voted for removal. Based on votes from 21 users.

User vote results: There were 17 votes to remove and 4 votes to keep

NOTE: Please do not use this poll as the only source of input to determine what you will do with the file.

Malware or legitimate?

If you feel that you need more information to determine if your should keep this file or remove it, please read this guide.

Please select the option that best describe your thoughts on the information provided on this web page

Free online surveys

And now some shameless self promotion ;)

A screenshot of FreeFixer's scan result.Hi, my name is Roger Karlsson. I've been running this website since 2006. I want to let you know about the FreeFixer program. FreeFixer is a freeware tool that analyzes your system and let you manually identify unwanted programs. Once you've identified some malware files, FreeFixer is pretty good at removing them. You can download FreeFixer here. It runs on Windows 2000/XP/2003/2008/2016/2019/Vista/7/8/8.1/10. Supports both 32- and 64-bit Windows.

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Please share with the other users what you think about this file. What does this file do? Is it legitimate or something that your computer is better without? Do you know how it was installed on your system? Did you install it yourself or did it come bundled with some other software? Is it running smoothly or do you get some error message? Any information that will help to document this file is welcome. Thank you for your contributions.

I'm reading all new comments so don't hesitate to post a question about the file. If I don't have the answer perhaps another user can help you.

Ben writes

0 thumbs

I have been stopping or disabling the Office Click To Run service/program whenever it kicks off. Can't always disable it and can't un-install it or won't be able to open office documents. But it takes up cpu and memory when it runs, and uses the network. Basically i don't need an installation program running all the time when i'm not installing something. It does degrade performance quite a bit and causes a lot of disk activity.

# 5 Sep 2018, 10:50

Roger Karlsson writes

0 thumbs

Ben, thank you for sharing!

# 7 Sep 2018, 4:10

Mack writes

0 thumbs

I have been getting this error message recently "Microsoft Office OsfInstaller has stopped working"
This is the only place I have found any actual information about this file but I still do not know what action, if any, that I should take. What I already tried was to to restore the pc to an earlier time, before this problem surfaced, and that worked for a few days. But now it is back again. It may be related to a website I visited that gave me a warning about unsecure scripts, and a https warning. Maybe that website downloaded unsecure scripts to my pc? I use AVG free and it did not detect any virus. Hell, I don't know what to do.

# 19 Mar 2019, 15:09

Roger Karlsson writes

0 thumbs

@Mack: It appears that osfinstaller.exe is trying to install some component for Microsoft Office 2016. The "Microsoft Office OsfInstaller has stopped working" error message indicates that the installer crashed. Unfortunately I don't know why. Possibly due to a software bug.

My best bet is to check if there's an upgrade for Microsoft Office 2016. It is possible that will solve the issue.

# 21 Mar 2019, 3:48

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