Classic PDF Editor Classic PDF Editor DLL comcat.dll

Troubleshooting Comcat.dll DLL Errors and Downloading Updates

Last Updated: 11/25/2023
[Time to Read Article: 5 minutes]

Microsoft Component Category Manager Library files such as comcat.dll utilize the DLL file extension. This file is considered a Win32 DLL (Dynamic link library) file, and was first created by Classic PDF Editor for the Microsoft(R) Windows NT(R) Operating System software package.

The release of comcat.dll introduced for Windows was on 11/08/2006 in Windows Vista. The latest file version for Classic PDF Editor 12 is v4.71 released on 03/11/2010. comcat.dll is found in Windows 10, Windows XP, and Windows Vista.

In this article, you will find detailed comcat.dll information, a DLL file troubleshooting guide, and a list of versions that are available for free download.

File Analysis Provided by Jason Geater (Author)

File Overview

General Information ^✻
File Name:	comcat.dll
File Extension:	DLL file extension
Description:	Microsoft Component Category Manager Library
Object File Type:	Dynamic link library
File Operating System:	Windows NT 32-bit
MIME Type:	application/octet-stream
User Popularity Rating:

Developer and Software Information
Software Developer:	Microsoft Corporation
Software Program:	Microsoft(R) Windows NT(R) Operating System
Legal Copyright:	Copyright (C) Microsoft Corp. 1981-1996

File Details
Character Set:	Unicode
Language Code:	English (U.S.)
File Flags:	(none)
File Flags Mask:	0x003f
Entry Point:	0x0000
Code Size:	12800

View Other comcat.dll Information

File Info	Description
File Size:	22 kB
File Modification Date/Time:	2020:02:11 14:07:26+00:00
File Type:	Win32 DLL
MIME Type:	application/octet-stream
Machine Type:	Intel 386 or later, and compatibles
Time Stamp:	1996:12:05 21:53:54+00:00
PE Type:	PE32
Linker Version:	3.10
Code Size:	12800
Initialized Data Size:	5120
Uninitialized Data Size:	0
Entry Point:	0x0000
OS Version:	4.0
Image Version:	4.0
Subsystem Version:	4.0
Subsystem:	Windows GUI
File Version Number:	4.71.1460.1
Product Version Number:	4.71.1460.1
File Flags Mask:	0x003f
File Flags:	(none)
File OS:	Windows NT 32-bit
Object File Type:	Dynamic link library
File Subtype:	0
Language Code:	English (U.S.)
Character Set:	Unicode
Company Name:	Microsoft Corporation
File Description:	Microsoft Component Category Manager Library
File Version:	4.71
Internal Name:	comcat.dll
Legal Copyright:	Copyright (C) Microsoft Corp. 1981-1996
Product Name:	Microsoft(R) Windows NT(R) Operating System
Product Version:	4.71

^✻ Portions of file data provided by Exiftool (Phil Harvey) distributed under the Perl Artistic License.

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What are comcat.dll Error Messages?

Dynamic Link Library comcat.dll Errors

comcat.dll is considered a type of Dynamic Link Library (DLL) file. Dynamic Link Library files, like comcat.dll, are essentially a "guide book" that stores information and instructions for executable (EXE) files - like mighost.exe - to follow. These files were created so that multiple programs (eg. Classic PDF Editor) could share the same comcat.dll file, saving valuable memory allocation, therefore making your computer run more efficiently.

Unfortunately, what makes DLL files so convenient and efficient, also makes them extremely vulnerable to problems. If something happens to a shared DLL file, either it goes missing or gets corrupted in some way, it can generate a "runtime" error message. Runtime is pretty self-explanatory; it means that these errors are triggered when comcat.dll is attempted to be loaded either when Classic PDF Editor is starting up, or in some cases already running. Some of the most common comcat.dll errors include:

Access Violation at address - comcat.dll.
comcat.dll could not be found.
Cannot find C:\Program Files (x86)\Classic PDF Editor\Lib\comcat.dll.
Cannot register comcat.dll.
Cannot start Classic PDF Editor. A required component is missing: comcat.dll. Please install Classic PDF Editor again.
Failed to load comcat.dll.
The application has failed to start because comcat.dll was not found.
The file comcat.dll is missing or corrupt.
This application failed to start because comcat.dll was not found. Re-installing the application may fix this problem.

Your comcat.dll file could be missing due to accidental deletion, uninstalled as a shared file of another program (shared with Classic PDF Editor), or deleted by a malware infection. Furthermore, comcat.dll file corruption could be caused from a power outage when loading Classic PDF Editor, system crash while loading comcat.dll, bad sectors on your storage media (usually your primary hard drive), or quite commonly, a malware infection. Thus, it's critical to make sure your anti-virus is kept up-to-date and scanning regularly.

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How to Fix comcat.dll Errors in 3 Steps (Time to complete: ~5-15 minutes)

If you're encountering one of the error messages above, follow these troubleshooting steps to resolve your comcat.dll issue. These troubleshooting steps are listed in the recommended order of execution.

Step 1: Restore your PC back to the latest restore point, "snapshot", or backup image before error occurred.

To begin System Restore (Windows XP, Vista, 7, 8, and 10):

Hit the Windows Start button
When you see the search box, type "System Restore" and press "ENTER".
In the search results, find and click System Restore.
Please enter the administrator password (if applicable / prompted).
Follow the steps in the System Restore Wizard to choose a relevant restore point.
Restore your computer to that backup image.

If the Step 1 fails to resolve the comcat.dll error, please proceed to the Step 2 below.

Step 2: If recently installed Classic PDF Editor (or related software), uninstall then try reinstalling Classic PDF Editor software.

You can uninstall Classic PDF Editor software by following these instructions (Windows XP, Vista, 7, 8, and 10):

Hit the Windows Start button
In the search box, type "Uninstall" and press "ENTER".
In the search results, find and click "Add or Remove Programs"
Find the entry for Classic PDF Editor 12 and click "Uninstall"
Follow the prompts for uninstallation.

After the software has been fully uninstalled, restart your PC and reinstall Classic PDF Editor software.

If this Step 2 fails as well, please proceed to the Step 3 below.

Classic PDF Editor 12

Classic PDF Editor

Step 3: Perform a Windows Update.

When the first two steps haven't solved your issue, it might be a good idea to run Windows Update. Many comcat.dll error messages that are encountered can be contributed to an outdated Windows Operating System. To run Windows Update, please follow these easy steps:

Hit the Windows Start button
In the search box, type "Update" and press "ENTER".
In the Windows Update dialog box, click "Check for Updates" (or similar button depending on your Windows version)
If updates are available for download, click "Install Updates".
After the update is completed, restart your PC.

If Windows Update failed to resolve the comcat.dll error message, please proceed to next step. Please note that this final step is recommended for advanced PC users only.

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If Those Steps Fail: Download and Replace Your comcat.dll File (Caution: Advanced)

If none of the previous three troubleshooting steps have resolved your issue, you can try a more aggressive approach (Note: Not recommended for amateur PC users) by downloading and replacing your appropriate comcat.dll file version. We maintain a comprehensive database of 100% malware-free comcat.dll files for every applicable version of Classic PDF Editor. Please follow the steps below to download and properly replace you file:

Locate your Windows operating system version in the list of below "Download comcat.dll Files".
Click the appropriate "Download Now" button and download your Windows file version.
Copy this file to the appropriate Classic PDF Editor folder location:

Windows XP: C:\WINDOWS\system32\dllcache\
Windows XP: C:\Windows\System32\
Windows Vista: C:\Windows\SysWOW64\
Windows Vista: C:\Windows\System32\
Windows 7: C:\Windows\System32\
Show 5 more directories +
Windows 7: C:\Windows\SysWOW64\
Windows 8: C:\Windows\System32\
Windows 8.1: C:\Windows\System32\
Windows 10: C:\Program Files (x86)\Classic PDF Editor\Lib\
Windows 10: C:\Windows\System32\
Restart your computer.

If this final step has failed and you're still encountering the error, you're only remaining option is to do a clean installation of Windows 10.

GEEK TIP : We must emphasize that reinstalling Windows will be a very time-consuming and advanced task to resolve comcat.dll problems. To avoid data loss, you must be sure that you have backed-up all of your important documents, pictures, software installers, and other personal data before beginning the process. If you are not currently backing up your data, you need to do so immediately.

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Download comcat.dll Files (Malware-Tested 100% Clean)

CAUTION : We strongly advise against downloading and copying comcat.dll to your appropriate Windows system directory. Classic PDF Editor typically does not release Classic PDF Editor DLL files for download because they are bundled together inside of a software installer. The installer's task is to ensure that all correct verifications have been made before installing and placing comcat.dll and all other DLL files for Classic PDF Editor. An incorrectly installed DLL file may create system instability and could cause your program or operating system to stop functioning altogether. Proceed with caution.

Classic PDF Editor 12

File Name

Software Version

File Version

Architecture

comcat.dll

4.71.1460.1

4.71

64-bit (x64)

Expand for Detailed File Information +

OS Version:	Windows 10
Software:	Microsoft(R) Windows NT(R) Operating System
Software Version:	4.71.1460.1
File Version:	4.71
File Size:	22288
File Date:	02/11/2020
MD5 Checksum:	3b180da2b50b954a55fe37afba58d428
SHA1 Checksum:	c2a409311853ad4608418e790621f04155e55000
SHA256 Checksum:	96d04cdfaf4f4d7b8722b139a15074975d4c244302f78034b7be65df1a92fd03
CRC32:
File Directory Location:	C:\Program Files (x86)\Classic PDF Editor\Lib\

File Version, System, and Machine Information
File Type:	Win32 DLL
Image Version:	4.0
Initialized Data Size:	5120
Linker Version:	3.10
Machine Type:	Intel 386 or later, and compatibles
PE Type:	PE32
Subsystem:	Windows GUI
Subsystem Version:	4.0
File Modification Date/Time:	02/11/2020

Windows 10

File Name

Software Version

File Version

Architecture

comcat.dll

10.0.15063.0

10.0.15063.0 (WinBuild.160101.0800)

64-bit (x64)

Expand for Detailed File Information +

OS Version:	Windows 10
Software:	Microsoft® Windows® Operating System
Software Version:	10.0.15063.0
File Version:	10.0.15063.0 (WinBuild.160101.0800)
File Size:	8704
File Date:	03/18/2017
MD5 Checksum:	5884dcfa372b693c4d4db74924a0c769
SHA1 Checksum:	8f3709ec7c1e8a73fd1ae1362efce51f1939bf77
SHA256 Checksum:	2d2007a0f6778605f1bb17b3efca9293f1c560b8c2a9a5fdcbbdc1b2ec9f7c57
CRC32:
File Directory Location:	C:\Windows\System32\

File Version, System, and Machine Information
File Type:	Win32 DLL
Image Version:	10.0
Initialized Data Size:	4096
Linker Version:	14.10
Machine Type:	Intel 386 or later, and compatibles
PE Type:	PE32
Subsystem:	Windows GUI
Subsystem Version:	10.0
File Modification Date/Time:	03/18/2017

Windows XP

File Name

Software Version

File Version

Architecture

comcat.dll

5.0.2600.1

5.0 (XPClient.010817-1148)

32-bit (x32)

Expand for Detailed File Information +

OS Version:	Windows XP
Software:	Microsoft® Windows® Operating System
Software Version:	5.0.2600.1
File Version:	5.0 (XPClient.010817-1148)
File Size:	3584
File Date:	04/14/2008
MD5 Checksum:	ffad3f4edff2d549b5966f59ccf8389b
SHA1 Checksum:	f8e72e5e58ebc688079bfaf9abd071463587567f
SHA256 Checksum:	3deaa18a5063dc1b2f4a12a7e52a13e6c8864b40e68b514d2f1cbd4348d58eb9
CRC32:
File Directory Location:	C:\WINDOWS\system32\dllcache\ C:\Windows\System32\

File Version, System, and Machine Information
File Type:	Win32 DLL
Image Version:	5.1
Initialized Data Size:	2048
Linker Version:	7.0
Machine Type:	Intel 386 or later, and compatibles
PE Type:	PE32
Subsystem:	Windows GUI
Subsystem Version:	4.0
File Modification Date/Time:	04/14/2008

Windows Vista

File Name

Software Version

File Version

Architecture

comcat.dll

32-bit (x32)

Expand for Detailed File Information +

OS Version:	Windows Vista
File Size:	7168
MD5 Checksum:	e2f8e6a62013071b07aa8c5bbcf22a4e
SHA1 Checksum:	606e8add9f7b1078f3946301c9dda0688c6b7f9d
SHA256 Checksum:	911762e082c7ea8c47c1d7876883ca4c125a06d0a0f227ea5b171fd76520ecae
CRC32:
File Directory Location:	C:\Windows\SysWOW64\

File Version, System, and Machine Information
There is no information available.

comcat.dll

6.0.6000.16386

6.0.6000.16386 (vista_rtm.061101-2205)

32-bit (x32)

Expand for Detailed File Information +

OS Version:	Windows Vista
Software:	Microsoft® Windows® Operating System
Software Version:	6.0.6000.16386
File Version:	6.0.6000.16386 (vista_rtm.061101-2205)
File Size:	8704
File Date:	11/02/2006
MD5 Checksum:	1124d020bb3b08bffed290d2057e65f8
SHA1 Checksum:	0e255a63dc0e58ebbbaf8deeb35d84b1109b6557
SHA256 Checksum:	4b111bf153114c74d191e93f442a7929cf2c35b3f49cc4170705741ef9f78b4a
CRC32:
File Directory Location:	C:\Windows\System32\

File Version, System, and Machine Information
File Type:	Win64 DLL
Image Version:	6.0
Initialized Data Size:	4608
Linker Version:	8.0
Machine Type:	AMD AMD64
PE Type:	PE32+
Subsystem:	Windows GUI
Subsystem Version:	6.0
File Modification Date/Time:	11/02/2006

Windows 8.1

File Name

Software Version

File Version

Architecture

comcat.dll

6.3.9600.17415

6.3.9600.17415 (winblue_r4.141028-1500)

64-bit (x64)

Expand for Detailed File Information +

OS Version:	Windows 8.1
Software:	Microsoft® Windows® Operating System
Software Version:	6.3.9600.17415
File Version:	6.3.9600.17415 (winblue_r4.141028-1500)
File Size:	8192
File Date:	11/21/2014
MD5 Checksum:	73adb3c5031483bb5944dc659ed77284
SHA1 Checksum:	ccefe3c0e97f35a16fcd65a0049a68fdab839a11
SHA256 Checksum:	156900991b7c832fb0c1d978945dc0ac2ddd87f728644bb31e3777b36cbaa489
CRC32:
File Directory Location:	C:\Windows\System32\

File Version, System, and Machine Information
File Type:	Win32 DLL
Image Version:	6.3
Initialized Data Size:	4096
Linker Version:	11.0
Machine Type:	Intel 386 or later, and compatibles
PE Type:	PE32
Subsystem:	Windows GUI
Subsystem Version:	6.3
File Modification Date/Time:	11/21/2014

Windows 8

File Name

Software Version

File Version

Architecture

comcat.dll

6.2.9200.16384

6.2.9200.16384 (win8_rtm.120725-1247)

64-bit (x64)

Expand for Detailed File Information +

OS Version:	Windows 8
Software:	Microsoft® Windows® Operating System
Software Version:	6.2.9200.16384
File Version:	6.2.9200.16384 (win8_rtm.120725-1247)
File Size:	8192
File Date:	07/26/2012
MD5 Checksum:	ecbf2ec6884dc52b25ace19d8f67f3ca
SHA1 Checksum:	901367edf790c18a4cffb09900c0969249090f3e
SHA256 Checksum:	93be427639dafaa7d5ef3a30bcfb63b76c26998c7b3270183ae591af1b0d81b6
CRC32:
File Directory Location:	C:\Windows\System32\

File Version, System, and Machine Information
File Type:	Win32 DLL
Image Version:	6.2
Initialized Data Size:	4608
Linker Version:	10.10
Machine Type:	Intel 386 or later, and compatibles
PE Type:	PE32
Subsystem:	Windows GUI
Subsystem Version:	6.2
File Modification Date/Time:	07/26/2012

Windows 7

File Name

Software Version

File Version

Architecture

comcat.dll

6.1.7600.16385

6.1.7600.16385 (win7_rtm.090713-1255)

64-bit (x64)

Expand for Detailed File Information +

OS Version:	Windows 7
Software:	Microsoft® Windows® Operating System
Software Version:	6.1.7600.16385
File Version:	6.1.7600.16385 (win7_rtm.090713-1255)
File Size:	8704
File Date:	07/14/2009
MD5 Checksum:	929bafc30ae90d2f38bed71ea355cbae
SHA1 Checksum:	813743fd726ce5d6c1383689c7cc7267bf100a32
SHA256 Checksum:	6b81d20e236cdc896e0f6af6082aa217fe6b1e26c1825c5103059af9fba1569f
CRC32:
File Directory Location:	C:\Windows\System32\

File Version, System, and Machine Information
File Type:	Win64 DLL
Image Version:	6.1
Initialized Data Size:	4608
Linker Version:	9.0
Machine Type:	AMD AMD64
PE Type:	PE32+
Subsystem:	Windows GUI
Subsystem Version:	6.1
File Modification Date/Time:	07/14/2009

comcat.dll

64-bit (x64)

Expand for Detailed File Information +

OS Version:	Windows 7
File Size:	7168
MD5 Checksum:	1e98d239010c9500cc9cc738100f5578
SHA1 Checksum:	9c5534be4ec98574207e79f2e561bc58a61c8163
SHA256 Checksum:	0becfe478299d21210ba3d809a45496c494306e6f4228c2a892b4269dc35c8d8
CRC32:
File Directory Location:	C:\Windows\SysWOW64\

File Version, System, and Machine Information
There is no information available.

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diagwrn.xml	Extensible Markup Language	Classic PDF Editor 12	35275	C:\$WINDOWS.~BT\Sources\Panther\
diagerr.xml	Extensible Markup Language	Classic PDF Editor 12	46014	C:\Windows\Panther\UnattendGC\
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