What is runonce.exe?

runonce.exe is part of Microsoft® Windows® Operating System and developed by Microsoft Corporation according to the runonce.exe version information.

runonce.exe's description is "Run Once Wrapper"

runonce.exe is digitally signed by Microsoft Windows.

runonce.exe is usually located in the 'C:\Windows\SysWOW64\' folder.

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

Product nameMicrosoft® Windows® Operating System
Company nameMicrosoft Corporation
File descriptionRun Once Wrapper
Internal nameRunOnce
Original filenameRUNONCE.EXE.MUI
Legal copyright© Microsoft Corporation. All rights reserved.
Product version6.1.7600.16385
File version6.1.7600.16385 (win7_rtm.090713-1255)

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

Product nameMicrosoft® Windows® Operating System
Company nameMicrosoft Corporation
File descriptionRun Once Wrapper
Internal nameRunOnce
Original filenameRUNONCE.EXE.MUI
Legal copyright© Microsoft Corporation. All rights..
Product version6.1.7600.16385
File version6.1.7600.16385 (win7_rtm.090713-1255)

Digital signatures [?]

runonce.exe has a valid digital signature.

Signer nameMicrosoft Windows
Certificate issuer nameMicrosoft Windows Verification PCA
Certificate serial number6101c6c1000000000007

VirusTotal report

None of the 44 anti-virus programs at VirusTotal detected the runonce.exe file.

None of the 44 anti-virus programs detected the runonce.exe file.

Hashes [?]


Error Messages

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

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

runonce.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.

Run Once Wrapper has stopped working.

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

runonce.exe is not a valid Win32 application.

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

What will you do with runonce.exe?

To help other users, please let us know what you will do with runonce.exe:

What did other users do?

The poll result listed below shows what users chose to do with runonce.exe. 89% have voted for removal. Based on votes from 246 users.

User vote results: There were 218 votes to remove and 28 votes to keep

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

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.

s hall writes

3 thumbs

my run once wrapper keeps running. after i turn laptop on and it boots up. my screen is black. (yes i give it at least 5 minutes to load up)i have to go into task manager and shut it off to get to a regular screen i should see after the computer boots up and ready to use. nothing on virus protection noticed. i have installed all the drivers i can find and still the same issue. on top of that any and every game on here that requires internet is not working....

# 25 Jan 2015, 17:37

PJRichey writes

4 thumbs

My granddaughter's screen is black after logging in. I opened the task master looking for something odd and not knowing what Run once Wrapper was, I ended the process. However, upon restart, the screen goes black again until Run once wrapper is ended. I found the post above dated 1/25/2015 which appears to be having the same issue.

# 3 Feb 2015, 7:05

:Peter: writes

1 thumb

Last night I downloaded FileZilla client from filezilla-project.org (sourceforge) and deselected all options for browser add-ons. This morning upon booting up and logging into any user's directory, I get nothing but a completely black screen and an active mouse plus a Pro-Scan window/GUI (at least I think that was its name). Ctrl-alt-del got me into the task manager, where I was able to restore user profiles but ending runonce.exe. I uninstalled FileZilla and Pro-Scan and then rebooted. I still get nothing but a blank screen whenever I try to log into any user directory. Next I tried to delete runonce.exe since this is the process that is causing my problem. Permission denied. No uninstall option.

I can achieve full functionality if I end runonce every time I log in, but clearly something is suddenly and desperately wrong.

What should I do?

Many thanks in advance.

# 7 Feb 2015, 9:00

Stacy writes

1 thumb

I have the same problem I get on my laptop and it goes to a black screen I to have to go through task manager to end runonce.exe then it will let me on. Then if I shut it down or restart my laptop I have to go through the same process again with the black screen. Hope I can get help on this matter
What in the world should I do as im getting very frustrated.

# 8 Feb 2015, 1:51

mansi writes

0 thumbs

I have the same issue.Blank screen after login and need to kill runonce.exe from taskbar.
Please help.

# 8 Feb 2015, 12:40

Tom Åström writes

0 thumbs

After my login I got a black screen. I could a Ctrl-Alt-Del and could open the Task Manager. I stopped the program "Run Once Wrapper" and I got the desktop back. After a restart the problem remained. What can I do?

# 10 Feb 2015, 13:39

-DAvid- writes

0 thumbs

same problem happening here. it looks like it is the 32bit run once wrapper that is kludging. If i kill that, the system restores. i assume it got corrupted somehow. what to do????

# 14 Feb 2015, 9:31

Roger Karlsson writes

0 thumbs


Sorry to hear you are having that black screen problem with runonce.exe:

Unfortunately I don't know what is causing the problem. I've been trying to get the same problem by downloading various software bundles, but without success.

Anyway, I don't know if this will work, but hopefully you can find more information about why RunOnce.exe hangs:

1. Install Process Explorer from Microsoft: https://technet.microsoft.com/en-us/sysinternals/bb896653.aspx
2. Reboot your machine.
3. Bring up the Windows Task Manager by pressing Ctrl+Shift+Esc.
4. Don't kill the RunOnce.exe process. Instead, use the Task Manager to start Process Explorer.
5. Examine the RunOnce.exe process. What command line was used to start RunOnce.exe? What DLLs do you see loaded into RunOnce.exe?
6. Did you see some reference to some file that looked suspicious? Please upload them to www.virustotal.com to check them for malware.

Did that give you some more clues about what is going on with run once.exe?

# 15 Feb 2015, 12:43

Roger Karlsson writes

0 thumbs

@Peter: Thanks for letting me know about the "FileZilla" download. The file was detected by a few of the anti-virus programs and digitally signed by a publisher called "Max Source" located in Israel. I've posted some more information about that in the blog:


# 15 Feb 2015, 12:47

-mark- writes

0 thumbs

The "runonce" scenario happened to our desk top last night. I spent all day today trying to get rid of the thing and I think I finally got it. I am not computer savy at all but I am persistent. I have Century Link internet with Norton anti-virus. A quick scan did not get rid of the problem however if look at the norton site there is a function called "power eraser". I used this and was able to remove the "runonce" problem.

# 15 Feb 2015, 15:11

JJ Maxwell writes

0 thumbs

This problem happened to my son's machine right after downloading NERO. After much research I did find that the runonce wrapper was the issue. I tried deleting it to no avail so what I ended up doing was using AVG shredder and shredded the runonce wrapper file. His desktop now shows on reboot. I do not believe NERO is the ONLY program that may be downloading this file; based on my research. So far, removing the file has not caused any other issues with his computer. He is running Windows 8 32 bit.

# 17 Feb 2015, 7:58

Anne writes

0 thumbs

I have had the same problem since downloading Java of all things! It is so frustrating. I have tried a restore and that fails telling me I have a corrupt file on my c: drive. This is driving my crazy! especially when I am trying to complete a midterm paper!!!At least I had found the same temporary fix as everyone else (ending the run once on task manager). I will try Process Explorer and se if that works.

# 18 Feb 2015, 22:44

Amanda Foley writes

0 thumbs

Hey guys I had the exact same problem I tried to delete runonce.exe but I was denied by Trust Installer but good news I got rid of it. I searched the internet on how to delete files that are protected by trust installer and it showed me a step by step guide see the link here http://helpdeskgeek.com/windows-7/windows-7-how-to-delete-files-protected-by-trustedinstaller/
I restarted my laptop and everything is going great no more black screens and task manager. Hope this helps everyone out I was slowly losing my mind everytime I started my laptop.

# 20 Feb 2015, 17:23

Roger Karlsson writes

0 thumbs

Please note that runonce.exe should NOT be deleted. It is a Windows file that comes preinstalled with the operation system. It is needed by some installers to work correctly.

The issue is not runonce.exe, but the program that runonce.exe is currently executing.

Hopefully you can use Microsoft's Process Explorer to track down the root cause, as I described in the comment above.

# 25 Feb 2015, 23:59

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