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What does the osa.exe file do?

The osa.exe process is also known as Microsoft Office Wrapper or, as the case may be, Microsoft Office XP component and is a part of Microsoft Office (Version 97, Professional Edition, 97, Standard Edition) or, as the case may be, Microsoft Excel (Version 97). This software is produced by Microsoft (www.microsoft.com). An obsolete or defective version of osa.exe can cause problems for your computer that can range from slowness to error messages such as these:

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What you should know about osa.exe Microsoft Office Wrapper

osa.exe is not a Windows system file and is known to frequently cause computer problems. Osa.exe is found in a subdirectory of "C:\Program Files". Frequently occurring are file sizes such as 51,984 bytes (78% of all these files) or, as the case may be, 83,360 bytes.
Windows starts the process each time that the computer boots up (Registry: MACHINE\User Shell Folders, User Shell Folders). The osa file is not part of the Windows operating system. The program executes in the background, and can only be terminated using Windows Task Manager. For this reason, 38% of all experts consider this file to be a possible threat. The probability that it can cause harm is high.

If you see this file on your hard drive or in Windows Task Manager, please make sure that it is not a malicious variant. It's a fact that many trojans try to cloak their true identity by calling themselves osa.exe. With the above information or by using tools like Security Task Manager you can determine if, in your case, the file is an undesirable variant.

What do other computer users say about osa?

Office Startup Assistant
Microsoft Office Startup Assistant that is loaded at start-up and improves performance by handling automation, Office fonts, certain Office commands, and Outlook notification.
After loading, prevented my pc from shutting down proper, repeatedly forced me to power reset, searched under SAFE boot multiple times, downloaded new antiviruses, didn't know it existed until loggedc in under 2nd admin acct and found it on dsktop. 2nd acct was not running it , and worked fine. installed as part of Powerpoint update, I don't have powerpoint! (further information...)
Gary - Minneapolis Minnesota

Summary: 23 users judge osa.exe to be an essential file that should not be touched. 4 users consider it harmless. However, 8 users consider this to be a suspicious process and would like to get rid of it. For this reason, 23 users have already deleted osa.exe. source: file.net

How to uninstall Microsoft Office or Microsoft Excel

To remove Microsoft Office Wrapper from your computer, please follow the manual instructions below or use an automatic uninstaller product.

  1. Click the Windows Start Button. You find it in the lower left corner of the taskbar.
  2. Type the word uninstall.
  3. Click Add or remove programs.
  4. Now locate Microsoft Office or Microsoft Excel in the list of displayed applications.
  5. Click the program, and then click Uninstall.
Remove software in Windows 10
osa.exe Microsoft Office Wrapper fix

How to tell if osa.exe (Microsoft Office Wrapper) was uninstalled cleanly

After uninstalling, restart your computer. Then start Windows Explorer and see if there is still a folder with the name of the software under C:\Program Files. Be sure to check the Registry as well for remnants of Microsoft Office Wrapper. To do this, start "Regedit", then look under "HKEY_LOCAL_MACHINE" > "Software" for Microsoft Office Wrapper or the name of the producer. Always keep in mind that only a computer professional should ever directly delete entries in the Windows Registry.

What to do if a program does not uninstall

The easiest way to remove any kind of software cleanly and accurately is to use an uninstaller tool. Because the uninstaller automatically creates a backup, there is no risk of anything going wrong.

Last but not least

If Windows not working quite right for you, or if startup is taking a long time, or osa.exe is causing problems for you, a good Windows diagnostic tool may very well help. This is especially effective when it comes to older computers that have accumulated vast quantities of "garbage data" as the result of many software installs and uninstalls.

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