Hi

MS FSX SP2 Win 7 64 bit.  I must clarify that my computer skills go as far as turning on and turning off.

Since yesterday when I go to boot up FSX I get a popup from the FSX.exe that MFC80.DLL is missing and that FSX can't start. I try a few more times - same thing. And then I try again and FSX starts up normally and everything is completely normal.

Obviously I've Googled this, but being a complete novice I find some of the posts a little confusing.  I have run an anti virus and malware check and everything comes up ok.

Is anyone able to give me some idea what's going on and/or how to fix this in a way that I will understand?  I will not be offended if you talk to me like a 5 year old ;-)

Thanks in advance for any help.

 

MFC80.dll is part of the Microsoft Foundation Class libraries. I believe that this file is installed from the MSVC libraries. I know... That's Greek to you... (Unless yo happen to be Greek, in which case it's all French to you). 

Try this:

Locate the following directory on your PC:
[your drive]\Steam\steamapps\common\FSX\_CommonRedist\vcredist\2005
In the directory you should find two files called vcredist_x64.exe and vcredist_x86.exe. Run each file one at a time and follow any on screen instructions.
3. Restart your PC and try loading FSX: SE again.

55 minutes ago, MDFlier said:

Locate the following directory on your PC:
[your drive]\Steam\steamapps\common\FSX\_CommonRedist\vcredist\2005
In the directory you should find two files called vcredist_x64.exe and vcredist_x86.exe. Run each file one at a time and follow any on screen instructions.
3. Restart your PC and try loading FSX: SE again.

I don't think he is using FSX-SE.  His tag is for boxed version and he said in the first sentence: MS FSX SP2 Win 7 64 bit.

I found no evidence of vcredist_x64.exe and vcredist_x86.exe on my computer at all. and I use FSX with SP2, also.

It should be in the same location on the boxed version as well. It's always been there. I used to have to run them occasionally as newer software will sometimes update the vcredist package and cause problems with FSX, which prefers the version delivered on the CDs. 

Thanks. I'll check this out. 

On 2/1/2018 at 9:07 PM, MDFlier said:

MFC80.dll is part of the Microsoft Foundation Class libraries. I believe that this file is installed from the MSVC libraries. I know... That's Greek to you... (Unless yo happen to be Greek, in which case it's all French to you). 

Try this:

Locate the following directory on your PC:
[your drive]\Steam\steamapps\common\FSX\_CommonRedist\vcredist\2005
In the directory you should find two files called vcredist_x64.exe and vcredist_x86.exe. Run each file one at a time and follow any on screen instructions.
3. Restart your PC and try loading FSX: SE again.

Hi

First of all, thanks for trying to help.

Unfortunately I can't find the path you show.  I don't have the Steam version, I have the standard MS box version.

I don't even know where to start looking for that path.

Anyone?

48 minutes ago, Gavin said:

Hi

First of all, thanks for trying to help.

Unfortunately I can't find the path you show.  I don't have the Steam version, I have the standard MS box version.

I don't even know where to start looking for that path.

Anyone?

Like I said, I also have FSX with SP2 and I don't have either of those .exe files that MDFlier mentioned.  I did a complete C:\ search and found nada!

I think there is some confusion. FSX:SE puts them on your hard drive. Boxed should have them on the CD. Unfortunately, my boxed version is gone, so I can't check it. I am 100% certain that the MSVC redistributables were on the CDs. 

You can download them directly from MS. https://www.microsoft.com/en-us/download/details.aspx?id=3387

 

22 hours ago, MDFlier said:

I think there is some confusion. FSX:SE puts them on your hard drive. Boxed should have them on the CD. Unfortunately, my boxed version is gone, so I can't check it. I am 100% certain that the MSVC redistributables were on the CDs. 

You can download them directly from MS. https://www.microsoft.com/en-us/download/details.aspx?id=3387

 

Hi

OK, I downloaded them, ran the install, rebooted the computer and still the same error.

What I find really weird is that FSX will run after five or six attempts to start it. So, at the end of the day, I can still use FSX, but never on the first boot up attempt.

I genuinely appreciate your attempt to help me. Any other ideas?

The mfc80.dll module is part of Microsoft Visual C++2005 w/SP1 which is required for FSX to start (see page 27, AVSIM CTD Guide).  When you get this error it indicates there is something wrong with Microsoft Visual or Microsoft.net.  This is a Microsoft.net error.  The link above provided by MDFlier is to Microsoft Visual C++ 2005.  The link to SP1 is at https://www.microsoft.com/en-us/download/details.aspx?id=5638

Make sure it is the x86 version being downloaded as FSX is a 32 bit application.  Microsoft might install the x64 bit version with Windows Update but you need the 32 bit version for FSX.  Having the 64 bit version is okay, it just won't ever be used by FSX.

Of course you also need Microsoft.net 2.0 too.  You can look in your C:\Windows\Microsoft.net\Framework folder for x86 to see what versions are installed.  FSX needs v1.1 or 2.0.

If you have Windows 10 installed, you need to also have the 16386 version of the uiautomationcore.dll installed in the main FSX folder.  I have found that FSX will have issues starting unless this version is installed (FSX boxed version only; not for FSX-SE as they installed their own version).

More details in the AVSIM CTD Guide, page 27/28.  See also page 32, Application will not start.

Best regards,

Jim

 

23 hours ago, Jim Young said:

The mfc80.dll module is part of Microsoft Visual C++2005 w/SP1 which is required for FSX to start (see page 27, AVSIM CTD Guide).  When you get this error it indicates there is something wrong with Microsoft Visual or Microsoft.net.  This is a Microsoft.net error.  The link above provided by MDFlier is to Microsoft Visual C++ 2005.  The link to SP1 is at https://www.microsoft.com/en-us/download/details.aspx?id=5638

Make sure it is the x86 version being downloaded as FSX is a 32 bit application.  Microsoft might install the x64 bit version with Windows Update but you need the 32 bit version for FSX.  Having the 64 bit version is okay, it just won't ever be used by FSX.

Of course you also need Microsoft.net 2.0 too.  You can look in your C:\Windows\Microsoft.net\Framework folder for x86 to see what versions are installed.  FSX needs v1.1 or 2.0.

If you have Windows 10 installed, you need to also have the 16386 version of the uiautomationcore.dll installed in the main FSX folder.  I have found that FSX will have issues starting unless this version is installed (FSX boxed version only; not for FSX-SE as they installed their own version).

More details in the AVSIM CTD Guide, page 27/28.  See also page 32, Application will not start.

Best regards,

Jim

 

Thanks you Jim. I'll have a go at that.

On 2/6/2018 at 10:16 PM, Jim Young said:

The mfc80.dll module is part of Microsoft Visual C++2005 w/SP1 which is required for FSX to start (see page 27, AVSIM CTD Guide).  When you get this error it indicates there is something wrong with Microsoft Visual or Microsoft.net.  This is a Microsoft.net error.  The link above provided by MDFlier is to Microsoft Visual C++ 2005.  The link to SP1 is at https://www.microsoft.com/en-us/download/details.aspx?id=5638

Make sure it is the x86 version being downloaded as FSX is a 32 bit application.  Microsoft might install the x64 bit version with Windows Update but you need the 32 bit version for FSX.  Having the 64 bit version is okay, it just won't ever be used by FSX.

Of course you also need Microsoft.net 2.0 too.  You can look in your C:\Windows\Microsoft.net\Framework folder for x86 to see what versions are installed.  FSX needs v1.1 or 2.0.

If you have Windows 10 installed, you need to also have the 16386 version of the uiautomationcore.dll installed in the main FSX folder.  I have found that FSX will have issues starting unless this version is installed (FSX boxed version only; not for FSX-SE as they installed their own version).

More details in the AVSIM CTD Guide, page 27/28.  See also page 32, Application will not start.

Best regards,

Jim

 

Jim

Downloaded and installed the x86 version from the link you kindly provided. I checked and can confirm I have Microsoft.net 2.0 installed.

The problem is still there. Exactly the same. FSX will start after five or six attempts - which is the weird thing for me. If I can't run a program because something is missing, why does it run after several attempts to boot up?

Try this - https://support.microsoft.com/en-us/help/961894/fix-an-application-that-uses-the-mfc80-dll-module-or-the-mfc80u-dll-mo

34 minutes ago, Jim Young said:

Try this - https://support.microsoft.com/en-us/help/961894/fix-an-application-that-uses-the-mfc80-dll-module-or-the-mfc80u-dll-mo

Thanks.  Unfortunately the hotfix link is no longer available. I just get:

The page does not exist

Sorry, the page you requested was not found.

Or am I just being stupid and missing something?

Microsoft Visual C++2005 w/SP1 is really old.  They probably fixed the problem with a Windows update so the Hotfix is no longer needed.  Over last weekend I had to reinstall FSX/Acceleration.  It started up perfectly and has been running perfectly.  I do not have the latest Microsoft Visual C++2005 w/SP1 (well, one is installed but it is not the latest).  I do not understand why my installation occurred without any problems and you are having issues.  In any case, I would uninstall Microsoft Visual C++2005 w/SP1 and reinstall.  A lot of people think because they have a 64-bit operating system, they need the Microsoft Visuals for 64-bit.  They do not as FSX is a 32-bit program and needs the x86 versions. 

The problem could also be with your dll.xml.  When you first start up FSX, that's what is loaded first.  There are times when FSX will start up normally, and then times FSX will not start up normally.  In other words, one of the modules the dll.xml is trying to load does not always load.  It has happened to me before and it was because I didn't have the latest version of the FSUIPC.  If you own Carenado products, they load a module called the CMeteoXml.dll.  This dll sometimes works, sometimes not. 

You stated you have FSX SP2 installed so I want to be sure you installed FSX (Standard or Deluxe), SP1, and then SP2.  SP2 does not contain the changes made for SP1 and is required.  I suspect something wrong with your installation as Microsoft Visual C++2005 makes sure FSX was installed properly as the developer intended.  If not, then it throws a 2005 C++ error.  If you did install SP1 and then SP2, then double-click on SP2 and select uninstall.  Once uninstalled, double-click on it and click install.  This will not affect any of your fsx.cfg or scenery.cfg or any other file.  It's just an update.