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I currently have Windows XP and my husband and I have two login accounts set up. We are using Microsoft Outlook for e-mail. I have no issues launching Outlook with my login but when Outlook is launched on my husbands login we get an error message. It seems to be looking for some sort of Add-in in C:Program Files\\Avast Anti-virus\\ashoutxt.dll. We are currently using Avast as our anti-virus. Outlook says that it may be able to fix this problem by doing by doing a system update/repair. We tried this but the same error message comes up.

That's a toughie, because it's really related to Avast and how Avast was set up.

What's probably happened is that when Avast was installed, you installed it while logged in to your account. Avast may have asked if you wanted it to be available for all accounts, or just the current one. It probably defaulted to just the current one, so if you didn't know what to answer, or were just zipping through the setup, that might have been selected. Or it may not have asked at all. Or it could be a bug in Avast.

When programs are set up, they have the option of making themselves available to all users on the machine, or just the user that's installing the software. There are several aspects of the install that can be affected by this decision, including the location of files, the location of information in the registry, initial settings, and even permissions.

Since everything works in one user account, but has such a clear and definite problem in another, this "smells" like that kind of problem.

I'm tempted to say try installing it again using your husbands account, but I don't know that that will resolve the problem, or perhaps just move it. When you to try to reinstall, do pay particular attention to whether or not it asks to install for all users or only the current user. Select all users, of course.

And if that doesn't work, I'd check with Avast's technical support and see if they have suggestions for this issue.

Article C2364 - June 7, 2005 « »

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Leo Leo A. Notenboom has been playing with computers since he was required to take a programming class in 1976. An 18 year career as a programmer at Microsoft soon followed. After "retiring" in 2001, Leo started Ask Leo! in 2003 as a place for answers to common computer and technical questions. More about Leo.

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7 Comments
Trey
November 16, 2006 2:16 PM

Yeah that might be true but in my case-that is impossible. I have one user:myself(the administrator). I just started having this annoying error when i got home from school and i have been using the program error free for almost 60 days.

Rafael
January 26, 2008 1:52 PM

I just went thru the same problem with my computer.
Here is what I found and did to solve it on my end:
1.Have your husband logon to his windows account
2. Go to C:\Documents and Setting\His-username\Local Settings\Application Data\Microsoft\Outlook
3. Make sure you set the hidden files and folder as unhidden (Tools/Folder Options/Views Tab..Show hidden files)
4. Look for a hidden file called "extend.dat"
Delete that file and restart outlook. It should fix the problem./.it did for me anyways.

My issue was that I re-installed windows and I backed up all my PST files from the Outlook folder..and I pasted them on the new installation..including the extend.dat file created by outlook and avast.
The error was showing as F:\Program Files\Avast...etc......well the letter "F:" belonged to my older installation.....the correct path is supposed to be C:\Program Files\Avast..etc

Hope this helps

MaC
September 4, 2008 11:57 PM

Well... removing the extent.dat file helps but is not a proper solution. I have to delete this file every day... There must be a better solution.

magnus
September 30, 2008 1:11 AM

After deleting the extend.dat go to the "add and remove programs", choose the avast to repair it.
The Avast add-in can be disabled in menu Tools/options/other/advanced options.

The Shuffler
November 4, 2008 9:22 PM

I must thank Magnus for the feedback! I was having an impossible time trying to get this same error message to go away. It was when I was opening Outlook... "program files\alwil software\avast4\ashoutxt.dll" and something about an add-in. I took your advice and went to Outlook and clicked: Tools/options/other/advanced options and removed the add-on. It was definitely an Avast bug and I don't like it when programs leave traces on my computer after I remove all the .dlls (even used Revo Unistaller). The ironic thing about this is that I was considering asking Leo myself! I was taken to this link after Googling. Thanks Leo for all the help that you provide!

SoloSymphony
December 12, 2009 1:21 AM

I've heard of User's Profiles getting corrupted and that creating a new profile and deleting the old can clean many little problems up, but I've never tried, and wonder if this really can be true.
Anyone heard of / know of this technique?
I've often wondered, when facing a program acting up, if simply starting a new user profile could breath new life into the system (beats formatting and re-installing a system).

Brian
September 18, 2012 2:31 PM

I have had a similar issue with XP. the issue was with a US Cellular air card it was working fine one day then every time you would try to open the launcher it would give you a message that said it had en-counted a problem and has to shut down. This message was only on one profile, but the software works fine on the other profiles on the computer. I had gone to C:\Documents and Settings\username\Application Data\US Cellular\Quick link Mobile and deleted all of the files. After that it launched and work as intended. I had gone through the registry, uninstalled it and re-installed it a number of time with no change. My thoughts here were the profile was corrupted some how. I am assuming that a full uninstall does not remove these files.

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