Fix catsrv.dll Errors

Sometimes Windows system displays error messages regarding corrupted or missing catsrv.dll files. Situations like that can occur, for example, during a software installation process. Each software program requires certain resources, libraries, and source data to work properly. Corrupted or nonexistent catsrv.dll file can therefore effect in failed execution of the started process.

catsrv.dll file COM+ Configuration Catalog Server. The file was developed by for use with software. Here you will find detailed information about the file and instructions how to proceed in the event of catsrv.dll related errors on your device. You can also download catsrv.dll file compatible with Windows 10, Windows 8.1, Windows 8, Windows 7, Windows 7, Windows Vista, Windows Vista, Windows XP devices which will (most probably) allow you to solve the problem.

For Windows Compatible with: Windows 10, Windows 8.1, Windows 8, Windows 7, Windows 7, Windows Vista, Windows Vista, Windows XP

File info

General information
Filename catsrv.dll
File extension DLL
Description COM+ Configuration Catalog Server
Program Microsoft® Windows® Operating System
Author Microsoft Corporation
MIME type application/octet-stream
File type Dynamic link library
System Windows NT 32-bit
Copyrights © Microsoft Corporation. All rights reserved.
Character set Unicode
Language cod English (U.S.)

There are various types of errors related to catsrv.dll file. catsrv.dll file may be located in wrong file directory on your device, may not be present in the system, or may be infected with malicious software and therefore not work correctly. Below is a list of most common error messages related to catsrv.dll file. If you encounter one listed below (or similar), please consider the following suggestions.

  • catsrv.dll is corrupted
  • catsrv.dll cannot be located
  • Runtime Error - catsrv.dll
  • catsrv.dll file error
  • catsrv.dll file cannot be loaded. Module was not found
  • cannot register catsrv.dll file:
  • catsrv.dll file could not be loaded
  • catsrv.dll file doesn't exist



Application could not be started because catsrv.dll file is missing. Reinstall the application to solve the problem.


Problems related to catsrv.dll can be addressed in various ways. Some methods are meant only for advanced users. If you don't have confidence in your skills, we suggest consulting a specialist. Fixing catsrv.dll file errors should be approached with utmost caution for any mistakes can result in unstable or unproperly working system. If you have the necassary skills, please proceed.

catsrv.dll file errors can be caused by various factors, so its is beneficial to try to fix them using various methods.

Step 1: Scan your computer for any malicious software

Virus Scan

Windows files are commonly attacked by malicious software that prevents them from working properly. First step in addressing problems with catsrv.dll file or any other Windows system files should be scanning the system for malicious software using an antivirus tool.

If by any chance you don't have any antivirus software installed on your system yet, you should do it immediately. Unprotected system is not only a source of file errors, but, more importantly, makes your system vulnerable to many dangers. If you don't know which antivirus tool to choose, consult this Wikipedia article – comparison of antivirus software.

Step 2: Update your system and drivers.

Windows Update

Installing relevant Microsoft Windows patches and updates may solve your problems related to catsrv.dll file. Use dedicated Windows tool to perform the update.

  1. Go to the Windows "Start" menu
  2. Type "Windows Update" in the search field
  3. Choose the appropriate software program (name may vary depending on your system version)
  4. Check if your system is up to date. If any unapplied updates are listed, install them immediately.
  5. After the update has been done,restart your computer in order to complete the process.

Beside updating the system, it is recommended that you install latest device drivers, as drivers can influence proper working of catsrv.dll or other system files. In order to do so, go to your computer or device producer's website where you will find information regarding latest driver updates.

Step 3: Use System File Checker (SFC) tool

System File Checker

System File Checker is a Microsoft Windows tool. As the name suggests, the tool is used for identyfing and addressing system file related errors, including those related to catsrv.dll file. After an error related to%fileextension% file has been discovered, the program attempts to automatically replace the catsrv.dll file with properly working version. To use the tool:

  1. Go to the Windows "Start" menu
  2. Type "cmd" in the search field
  3. Locate "Command Prompt" result – don't run it yet:
  4. Click the right mouse button and select "Run as Administrator" option
  5. Type "sfc /scannow" in console prompt to start the program and follow the instructions

Step 4: Restoring Windows system

Windows Recovery

Another approach is to restore system to previous state, before the catsrv.dll file error occured. In order to restore your system, follow the instructions below

  1. Go to the Windows "Start" menu
  2. Type "System Restore" in the search field
  3. Start the system restore tool – it's name may differ depending on version of the system
  4. The application will guide you through the process – read the messages carefully
  5. After the process has finished, restart your computer.

If all the above-mentioned methods failed and the catsrv.dll file problem has not been resolved, proceed to the next step. Remember that the following steps are intended only for advanced users.

Download and replace catsrv.dll file

The last solution is to manually download and replace catsrv.dll file in appropriate folder on the disk. Select file version compatible with your operating system and click the "Download" button. Next, go to your web browser's "Downloaded" folder and copy the downloaded catsrv.dll file.

Go to the folder where the file should be located and paste the downloaded file. Below is the list of catsrv.dll file example directory paths.

  • Windows 10: C:\Windows\System32\
  • Windows 8.1: C:\Windows\System32\
  • Windows 8: 1: C:\Windows\System32\
  • Windows 7: C:\Windows\System32\
  • Windows 7: C:\Windows\System32\
  • Windows Vista: ---
  • Windows Vista: ---
  • Windows XP: ---

If the steps did not solve your catsrv.dll file problem, you should consult a professional. A probability exists that the error(s) might be device-related and therefore should be resolved at the hardware level. A fresh operating system installation might be necessary – a faulty system installation process can result in data loss.

File versions list

Filename catsrv.dll
System Windows 10
File size 385536 bytes
Date 2017-03-18
File details
MD5 cf82890de2a2413a2ea95674307b6bfd
SHA1 cc8e8fedbc772fbe43e269f5103a1c2cdef4d2ba
SHA256 3c7d25f048c4c92f7fa442a970767107b14e50a7b4674a13727e915b0b30bb68
CRC32 5c5ab5ad
Example file location C:\Windows\System32\
Filename catsrv.dll
System Windows 8.1
File size 401408 bytes
Date 2014-11-21
File details
MD5 71c516caa6158aff85957adf8c6262e0
SHA1 8af477e86f84293f060938b351f329f92a3b2c35
SHA256 c6c37aeb9e17b4b590d8811372dd86b9ea466cfe3b1d4378941728fa7e1b9b9b
CRC32 5854ae0d
Example file location C:\Windows\System32\
Filename catsrv.dll
System Windows 8
File size 356864 bytes
Date 2012-07-26
File details
MD5 b509d980567ac02b828a4ecc9944b558
SHA1 c567ea6d45886ed5a1fff95cb5e5d284c62e75b0
SHA256 d30a4750dd10f77bc5d54b355b4e8f6e307c00b37fd5a841fc5070d0cf62edfd
CRC32 2d679361
Example file location 1: C:\Windows\System32\
Filename catsrv.dll
System Windows 7
File size 472576 bytes
Date 2009-07-14
File details
MD5 4b841b69869fa1075479cf3d9a22b19b
SHA1 dcf71a6eaf2a99d314a761816fe78d01ebd323c2
SHA256 0cae7178d1e44abeba812cd4046bc2255af7d75c2927c1affe7b1f541b2942c5
CRC32 a86c9caa
Example file location C:\Windows\System32\
Filename catsrv.dll
System Windows 7
File size 449024 bytes
Date -0001-11-30
File details
MD5 60ce0e9d30244c2a9d430fd02f6c22df
SHA1 3503d231aea6f917ef754a9b0cf0c69bcfa65506
SHA256 9a350cdc88f345137513c9fb36999a244dc62d2fb669857f5a6e51a4f913c7c2
CRC32 0759a78e
Example file location C:\Windows\System32\
Filename catsrv.dll
System Windows Vista
File size 451072 bytes
Date -0001-11-30
File details
MD5 169f4763d943fb712948292066318635
SHA1 4047df1b81ae6055f19f8854ffd4fadbd03471a0
SHA256 3731d619784ee366fee267642001c2710d33b3a1d848ae6464bfcb0ac6376a53
CRC32 febd5036
Example file location ---
Filename catsrv.dll
System Windows Vista
File size 477184 bytes
Date 2008-01-21
File details
MD5 9f1d9bd48314acc8dd6ef1911818fcbf
SHA1 d8939dafe65f85a7110db9c77244d46bbcbee709
SHA256 33f7dede1c179f96db6801917eb2cec0eb332655de4e4b61d5cdaa65f4b0809c
CRC32 798e0c0b
Example file location ---
Filename catsrv.dll
System Windows XP
File size 226304 bytes
Date 2008-04-14
File details
MD5 28cdb50d882d3bad993d25be596307ea
SHA1 512fb2e3c685136df147e8896f02319c79683db1
SHA256 77d1b073c72b1a8bf3c22dfefef0576e9a24b4372724d0ac2368613383e7ca74
CRC32 91939903
Example file location ---