Windows explorer has stopped working

Currently having problems with Windows explorer has stopped working.

As of the moment I have had around 3 to 3 errors and I did was just to restart the program. After restart it went well again. I went to the event viewer and found out some data. Here it is for your perusal.

---

Log Name: Application
Source: Application Error
Date: 11/14/2010 7:25:43 PM
Event ID: 1000
Task Category: (100)
Level: Error
Keywords: Classic
User: N/A
Computer: Jxxxxxxxxx-PC
Description:
Faulting application name: Explorer.EXE, version: 6.1.7600.16385, time stamp: 0x4a5bc60d
Faulting module name: MFC80U.DLL, version: 8.0.50727.4053, time stamp: 0x4a595928
Exception code: 0xc0000005
Fault offset: 0x00030893
Faulting process id: 0x614
Faulting application start time: 0x01cb83df29c2085e
Faulting application path: C:\Windows\Explorer.EXE
Faulting module path: C:\Windows\WinSxS\x86_microsoft.vc80.mfc_1fc8b3b9a1e18e3b_8.0.50727.4053_none_cbf21254470d8752\MFC80U.DLL
Report Id: eaaf6421-efe1-11df-b8f4-0011d854f418
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
<System>
<Provider Name="Application Error" />
<EventID Qualifiers="0">1000</EventID>
<Level>2</Level>
<Task>100</Task>
<Keywords>0x80000000000000</Keywords>
<TimeCreated SystemTime="2010-11-14T11:25:43.000000000Z" />
<EventRecordID>4366</EventRecordID>
<Channel>Application</Channel>
<Computer>Jxxxxxxxxxx-PC</Computer>
<Security />
</System>
<EventData>
<Data>Explorer.EXE</Data>
<Data>6.1.7600.16385</Data>
<Data>4a5bc60d</Data>
<Data>MFC80U.DLL</Data>
<Data>8.0.50727.4053</Data>
<Data>4a595928</Data>
<Data>c0000005</Data>
<Data>00030893</Data>
<Data>614</Data>
<Data>01cb83df29c2085e</Data>
<Data>C:\Windows\Explorer.EXE</Data>
<Data>C:\Windows\WinSxS\x86_microsoft.vc80.mfc_1fc8b3b9a1e18e3b_8.0.50727.4053_none_cbf21254470d8752\MFC80U.DLL</Data>
<Data>eaaf6421-efe1-11df-b8f4-0011d854f418</Data>
</EventData>
</Event>

--
Log Name: Application
Source: Application Error
Date: 11/15/2010 3:05:18 AM
Event ID: 1000
Task Category: (100)
Level: Error
Keywords: Classic
User: N/A
Computer: Jxxxxxxxxxxxx-PC
Description:
Faulting application name: Explorer.EXE, version: 6.1.7600.16385, time stamp: 0x4a5bc60d
Faulting module name: MFC80U.DLL, version: 8.0.50727.4053, time stamp: 0x4a595928
Exception code: 0xc0000005
Fault offset: 0x00030893
Faulting process id: 0x618
Faulting application start time: 0x01cb8423cf1909bc
Faulting application path: C:\Windows\Explorer.EXE
Faulting module path: C:\Windows\WinSxS\x86_microsoft.vc80.mfc_1fc8b3b9a1e18e3b_8.0.50727.4053_none_cbf21254470d8752\MFC80U.DLL
Report Id: 1e8e1988-f022-11df-824c-0011d854f418
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
<System>
<Provider Name="Application Error" />
<EventID Qualifiers="0">1000</EventID>
<Level>2</Level>
<Task>100</Task>
<Keywords>0x80000000000000</Keywords>
<TimeCreated SystemTime="2010-11-14T19:05:18.000000000Z" />
<EventRecordID>4416</EventRecordID>
<Channel>Application</Channel>
<Computer>Jxxxxxxxxxx-PC</Computer>
<Security />
</System>
<EventData>
<Data>Explorer.EXE</Data>
<Data>6.1.7600.16385</Data>
<Data>4a5bc60d</Data>
<Data>MFC80U.DLL</Data>
<Data>8.0.50727.4053</Data>
<Data>4a595928</Data>
<Data>c0000005</Data>
<Data>00030893</Data>
<Data>618</Data>
<Data>01cb8423cf1909bc</Data>
<Data>C:\Windows\Explorer.EXE</Data>
<Data>C:\Windows\WinSxS\x86_microsoft.vc80.mfc_1fc8b3b9a1e18e3b_8.0.50727.4053_none_cbf21254470d8752\MFC80U.DLL</Data>
<Data>1e8e1988-f022-11df-824c-0011d854f418</Data>
</EventData>
</Event>

I did not add any new software but will soon upgrade to Sandboxie 3.5 from 3.48 and to use Online Armor Premium 4.5. Might also change security apps and include Prevx with Avast free ver5 but not yet. Currently using Avira Premium ver10, Mbam Pro, HitmanPro(on-demand) Outpost Pro ver7.

I do not know what to do to be free from this error. Not quite knowledgable in the tweaks for Windows 7 also as I am a new user.

Can someone help me here....thanks very much!

mfc80u.dll is a part of MS Visual Studio and normally it shouldn't have anything to do with Windows Explorer functions.
The file is used by various Microsoft applications, such as Visual C++, Microsoft C/C++, Visual C++.Net etc.

If Visual Studio is installed, the file should reside in: C:\Program Files\Microsoft Visual Studio 8\Common7\Tools\Bin folder.
See, if you have any Visual Studio listed in Program Files.

@Broni,

Thanks for the reply.

No I do not have Visual Studio in the Program Files folder. Please see attached image.

What will I check next or is there something further? Thanks!

Please download SystemLook from one of the links below and save it to your Desktop.
Download Mirror #1
Download Mirror #2
64-bit users go HERE

• Double-click SystemLook.exe to run it.
• Vista users:: Right click on SystemLook.exe, click Run As Administrator
• Copy the content of the following box into the main textfield:
  

  :filefind
  MFC80U.DLL
  

• Click the Look button to start the scan.
• When finished, a notepad window will open with the results of the scan. Please post this log in your next reply.

Note: The log can also be found on your Desktop entitled SystemLook.txt

Will get back here. As of the moment trying to download it but it get's stopped. Had one with only 65kb, next was 74kb....I believe it is 98.5kb but it'snow the 5th time now. Will get back here.

File attached (zipped)

Hi;

Here is the result of the scan.

SystemLook 04.09.10 by jpshortstuff
Log created at 03:41 on 17/11/2010 by Jason Bourne
Administrator - Elevation successful

========== filefind ==========

Searching for "MFC80U.DLL"
C:\Program Files\Adobe\Adobe Extension Manager\mfc80u.dll --a---- 1079808 bytes [06:02 12/03/2007] [06:02 12/03/2007] C297A92852F494ED69A5EC0CC2AF9B89
C:\Program Files\Nero\Nero 10\Nero BackItUp\vc_x86\Microsoft.VC80.MFC\mfc80u.dll --a---- 1093120 bytes [08:18 22/02/2010] [08:18 22/02/2010] 686B224B4987C22B153FBB545FEE9657
C:\Windows\winsxs\x86_microsoft.vc80.mfc_1fc8b3b9a1e18e3b_8.0.50727.163_none_0c187ef99ee1d25a\mfc80u.dll --a---- 1080320 bytes [06:04 31/10/2010] [06:04 31/10/2010] 6A9307604579161A739D79FFACF7D31B
C:\Windows\winsxs\x86_microsoft.vc80.mfc_1fc8b3b9a1e18e3b_8.0.50727.4053_none_cbf21254470d8752\mfc80u.dll --a---- 1093120 bytes [00:40 06/11/2010] [00:40 06/11/2010] 686B224B4987C22B153FBB545FEE9657
C:\Windows\winsxs\x86_microsoft.vc80.mfc_1fc8b3b9a1e18e3b_8.0.50727.42_none_d6c3e7af9bae13a2\mfc80u.dll --a---- 1079808 bytes [22:37 30/10/2010] [22:37 30/10/2010] C297A92852F494ED69A5EC0CC2AF9B89

-= EOF =-

What will I do next?

Thank you!

We need to investigate little bit more.

Please download SystemLook from one of the links below and save it to your Desktop.
Download Mirror #1
Download Mirror #2
64-bit users go HERE

• Double-click SystemLook.exe to run it.
• Vista users:: Right click on SystemLook.exe, click Run As Administrator
• Copy the content of the following box into the main textfield:
  

  :file
  C:\Windows\winsxs\x86_microsoft.vc80.mfc_1fc8b3b9a1e18e3b_8.0.50727.163_none_0c187ef99ee1d25a\mfc80u.dll
  C:\Windows\winsxs\x86_microsoft.vc80.mfc_1fc8b3b9a1e18e3b_8.0.50727.4053_none_cbf21254470d8752\mfc80u.dll
  C:\Windows\winsxs\x86_microsoft.vc80.mfc_1fc8b3b9a1e18e3b_8.0.50727.42_none_d6c3e7af9bae13a2\mfc80u.dll
  

• Click the Look button to start the scan.
• When finished, a notepad window will open with the results of the scan. Please post this log in your next reply.

Note: The log can also be found on your Desktop entitled SystemLook.txt

Try re- installing the visual studio libraries:

http://www.microsoft.com/downloads/en/details.aspx?FamilyID=9b2da534-3e03-4391-8a4d-074b9f2bc1bf&displaylang=en

http://www.microsoft.com/downloads/en/details.aspx?FamilyID=32bc1bee-a3f9-4c13-9c99-220b62a191ee&displaylang=en

@Broni:

Please see text attached:

SystemLook 04.09.10 by jpshortstuff
Log created at 01:58 on 19/11/2010 by Jason Bourne
Administrator - Elevation successful

========== file ==========

C:\Windows\winsxs\x86_microsoft.vc80.mfc_1fc8b3b9a1e18e3b_8.0.50727.163_none_0c187ef99ee1d25a\mfc80u.dll - File found and opened.
MD5: 6A9307604579161A739D79FFACF7D31B
Created at 06:04 on 31/10/2010
Modified at 06:04 on 31/10/2010
Size: 1080320 bytes
Attributes: --a----
FileDescription: MFCDLL Shared Library - Retail Version
FileVersion: 8.00.50727.163
ProductVersion: 8.00.50727.163
OriginalFilename: MFC80U.DLL
InternalName: MFC80U.DLL
ProductName: Microsoft® Visual Studio® 2005
CompanyName: Microsoft Corporation
LegalCopyright: © Microsoft Corporation. All rights reserved.

C:\Windows\winsxs\x86_microsoft.vc80.mfc_1fc8b3b9a1e18e3b_8.0.50727.4053_none_cbf21254470d8752\mfc80u.dll - File found and opened.
MD5: 686B224B4987C22B153FBB545FEE9657
Created at 00:40 on 06/11/2010
Modified at 00:40 on 06/11/2010
Size: 1093120 bytes
Attributes: --a----
FileDescription: MFCDLL Shared Library - Retail Version
FileVersion: 8.00.50727.4053
ProductVersion: 8.00.50727.4053
OriginalFilename: MFC80U.DLL
InternalName: MFC80U.DLL
ProductName: Microsoft® Visual Studio® 2005
CompanyName: Microsoft Corporation
LegalCopyright: © Microsoft Corporation. All rights reserved.

C:\Windows\winsxs\x86_microsoft.vc80.mfc_1fc8b3b9a1e18e3b_8.0.50727.42_none_d6c3e7af9bae13a2\mfc80u.dll - File found and opened.
MD5: C297A92852F494ED69A5EC0CC2AF9B89
Created at 22:37 on 30/10/2010
Modified at 22:37 on 30/10/2010
Size: 1079808 bytes
Attributes: --a----
FileDescription: MFCDLL Shared Library - Retail Version
FileVersion: 8.00.50727.42
ProductVersion: 8.00.50727.42
OriginalFilename: MFC80U.DLL
InternalName: MFC80U.DLL
ProductName: Microsoft® Visual Studio® 2005
CompanyName: Microsoft Corporation
LegalCopyright: © Microsoft Corporation. All rights reserved.

-= EOF =-

@cps86500;

Now downloading the file. Will wait first for Broni the reading of the last post of SsystemLook. Thanks!

You can try downloads suggested by cps68500. It won't hurt anything.
If that won't solve the problem, we'll play with the above files.

@Broni/cps68500;

Sorry for late reply. I reversed the fsutil memory usage to "0" but got 1 error yesterday...

Okay I will check out the re- installing the visual studio libraries.

Will get back here.

Thank you.

@Broni;

Re-installed the visual libraries ang got nothing until today. I was surfing earlier and got 1 instance of "Windows explorer has stopped working". I used 'SystemLook' and here is the data(it was the same as of the previous)

What do we do now?

----


SystemLook 04.09.10 by jpshortstuff
Log created at 21:57 on 25/11/2010 by Jason Bourne
Administrator - Elevation successful

========== filefind ==========

Searching for "MFC80U.DLL"
C:\Program Files\Adobe\Adobe Extension Manager\mfc80u.dll --a---- 1079808 bytes [06:02 12/03/2007] [06:02 12/03/2007] C297A92852F494ED69A5EC0CC2AF9B89
C:\Program Files\Nero\Nero 10\Nero BackItUp\vc_x86\Microsoft.VC80.MFC\mfc80u.dll --a---- 1093120 bytes [08:18 22/02/2010] [08:18 22/02/2010] 686B224B4987C22B153FBB545FEE9657
C:\Windows\winsxs\x86_microsoft.vc80.mfc_1fc8b3b9a1e18e3b_8.0.50727.163_none_0c187ef99ee1d25a\mfc80u.dll --a---- 1080320 bytes [06:04 31/10/2010] [06:04 31/10/2010] 6A9307604579161A739D79FFACF7D31B
C:\Windows\winsxs\x86_microsoft.vc80.mfc_1fc8b3b9a1e18e3b_8.0.50727.4053_none_cbf21254470d8752\mfc80u.dll --a---- 1093120 bytes [00:40 06/11/2010] [00:40 06/11/2010] 686B224B4987C22B153FBB545FEE9657
C:\Windows\winsxs\x86_microsoft.vc80.mfc_1fc8b3b9a1e18e3b_8.0.50727.42_none_d6c3e7af9bae13a2\mfc80u.dll --a---- 1079808 bytes [22:37 30/10/2010] [22:37 30/10/2010] C297A92852F494ED69A5EC0CC2AF9B89

-= EOF =-

I was surfing earlier and got 1 instance of "Windows explorer has stopped working"

Was the very same issue listed:
Faulting module path: C:\Windows\WinSxS\x86_microsoft.vc80.mfc_1fc8b3b9a1e18e3b_8.0.50727.4053_none_cbf21254470d8752\MFC80U.DLL

@Broni;

I forgot to attach the other SsystemLook data. Here it is in full.

"Was the very same issue listed:
Faulting module path: C:\Windows\WinSxS\x86_microsoft.vc80.mfc_1fc8b3b9a1e18e3b_8.0.50727.4053_none_cbf21254470d8752\MFC80U.DLL "
--Are you referring to this stringbeing in the SystemLook data? If so, then yes it is. (in italics/bold...kindly see if my identification is correct..thanks)


SystemLook 04.09.10 by jpshortstuff
Log created at 21:57 on 25/11/2010 by Jason Bourne
Administrator - Elevation successful

========== filefind ==========

Searching for "MFC80U.DLL"
C:\Program Files\Adobe\Adobe Extension Manager\mfc80u.dll --a---- 1079808 bytes [06:02 12/03/2007] [06:02 12/03/2007] C297A92852F494ED69A5EC0CC2AF9B89
C:\Program Files\Nero\Nero 10\Nero BackItUp\vc_x86\Microsoft.VC80.MFC\mfc80u.dll --a---- 1093120 bytes [08:18 22/02/2010] [08:18 22/02/2010] 686B224B4987C22B153FBB545FEE9657
C:\Windows\winsxs\x86_microsoft.vc80.mfc_1fc8b3b9a1e18e3b_8.0.50727.163_none_0c187ef99ee1d25a\mfc80u.dll --a---- 1080320 bytes [06:04 31/10/2010] [06:04 31/10/2010] 6A9307604579161A739D79FFACF7D31B
C:\Windows\winsxs\x86_microsoft.vc80.mfc_1fc8b3b9a1e18e3b_8.0.50727.4053_none_cbf21254470d8752\mfc80u.dll --a---- 1093120 bytes [00:40 06/11/2010] [00:40 06/11/2010] 686B224B4987C22B153FBB545FEE9657
C:\Windows\winsxs\x86_microsoft.vc80.mfc_1fc8b3b9a1e18e3b_8.0.50727.42_none_d6c3e7af9bae13a2\mfc80u.dll --a---- 1079808 bytes [22:37 30/10/2010] [22:37 30/10/2010] C297A92852F494ED69A5EC0CC2AF9B89

-= EOF =-


----

SystemLook 04.09.10 by jpshortstuff
Log created at 03:59 on 26/11/2010 by Jason Bourne
Administrator - Elevation successful

========== file ==========

C:\Windows\winsxs\x86_microsoft.vc80.mfc_1fc8b3b9a1e18e3b_8.0.50727.163_none_0c187ef99ee1d25a\mfc80u.dll - File found and opened.
MD5: 6A9307604579161A739D79FFACF7D31B
Created at 06:04 on 31/10/2010
Modified at 06:04 on 31/10/2010
Size: 1080320 bytes
Attributes: --a----
FileDescription: MFCDLL Shared Library - Retail Version
FileVersion: 8.00.50727.163
ProductVersion: 8.00.50727.163
OriginalFilename: MFC80U.DLL
InternalName: MFC80U.DLL
ProductName: Microsoft® Visual Studio® 2005
CompanyName: Microsoft Corporation
LegalCopyright: © Microsoft Corporation. All rights reserved.

C:\Windows\winsxs\x86_microsoft.vc80.mfc_1fc8b3b9a1e18e3b_8.0.50727.4053_none_cbf21254470d8752\mfc80u.dll - File found and opened.
MD5: 686B224B4987C22B153FBB545FEE9657
Created at 00:40 on 06/11/2010
Modified at 00:40 on 06/11/2010
Size: 1093120 bytes
Attributes: --a----
FileDescription: MFCDLL Shared Library - Retail Version
FileVersion: 8.00.50727.4053
ProductVersion: 8.00.50727.4053
OriginalFilename: MFC80U.DLL
InternalName: MFC80U.DLL
ProductName: Microsoft® Visual Studio® 2005
CompanyName: Microsoft Corporation
LegalCopyright: © Microsoft Corporation. All rights reserved.

C:\Windows\winsxs\x86_microsoft.vc80.mfc_1fc8b3b9a1e18e3b_8.0.50727.42_none_d6c3e7af9bae13a2\mfc80u.dll - File found and opened.
MD5: C297A92852F494ED69A5EC0CC2AF9B89
Created at 22:37 on 30/10/2010
Modified at 22:37 on 30/10/2010
Size: 1079808 bytes
Attributes: --a----
FileDescription: MFCDLL Shared Library - Retail Version
FileVersion: 8.00.50727.42
ProductVersion: 8.00.50727.42
OriginalFilename: MFC80U.DLL
InternalName: MFC80U.DLL
ProductName: Microsoft® Visual Studio® 2005
CompanyName: Microsoft Corporation
LegalCopyright: © Microsoft Corporation. All rights reserved.

-= EOF =-