Details about cdosys.dll Error

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File namecdosys.dll
File version6.2.0004.0
ManufacturerMicrosoft Corporation
Product NameMicrosoft Exchange
File DescriptionMicrosoft CDO for Windows Library
File Version6.2.0004.0
Internal NameCDOSYS
File MD541fda1514f28a71da5d5461dbdc1d04c

Related Pop-ups about cdosys.dll

The file cdosys.dll is missing.
Reinstalling might help fix this.

Unable to launch the software located at path:

Recommended solution to fix cdosys.dll error

For people who encountered cdosys.dll error or other regular system problems, we suggest downloading professional PC error fix tool to help you fix cdosys.dll error instantly and automatically without any complicated manual operation, using the error fix tool could also repair and clean your Windows registry, thus stable and optimize system performance, prevent registry related - errors or other potential problems effectively. You may follow the below three simple to fix cdosys.dll error safely.

Still can't Fix: cdosys.dll Error

Know More about [keyword_name]] is Missing Error

cdosys.dll error is a common system error that could happen in most of the Windows platforms. Statistic shows that in 70% of the cases cdosys.dll error appears upon system startup, and in the rest 30% of cases, it appears while users are trying to launch certain application. If you unfortunately receive cdosys.dll error, that may indicates either there is something wrong with the cdosys.dll file/process or your system has problems that trigger the error.

Close the software which are running in the background - cdosys.dll

Part of the reason why old computer take so long to start and various errors is because of all the applications you've installed. Reducing the number of applications which start-up when Windows boots enables you to get to the desktop faster and increases the memory available.

Press Windows+R and type msconfig and click Ok. Select the Services tab, tick 'Hide all Microsoft services' and see what's left. There may be services you can live without and clearing the tick box prevents them from running. For example, Firefox works perfectly well without the Mozilla Maintenance Service. On the Startup tab (click Task Manager in Windows 8), are lots of programs that start with Windows. Knowing what to disable isn't easy, but you can use Google to search for items and see if they are necessary, useful or neither of those.

Remove malware in your computer system - cdosys.dll

It's possible that your error may be caused by a computer malware in your computer. Those PC malware can damage, modify or even delete your files like cdosys.dll. Moreover, it's also possible that this cdosys.dll error is fabricated by the malware to frighten and coax you into purchasing its fake products. You can download an anti-virus utility to wipe them out. I recommend Norton. I have used it for over ten years and I know it can also help you.

Symptoms of getting cdosys.dll error.

  1. Consistently receiving error messages while using the computer.
  2. Unable to launch certain program/application.
  3. System performance decrease dramatically.
  4. System halts or freeze frequently after getting the error.
  5. Desktop shows no application icon.
  6. Random blue screen of death.

Causes of error cdosys.dll

  1. When you uninstall Microsoft Exchange or other programs which need cdosys.dll, cdosys.dll is removed
  2. Blocked by anti-virus software(too sensitive)
  3. File has been corrupted by a virus or other malware leading to it either being unrecognizable or it has been removed by your anti-virus program.

Some other solutoins to cdosys.dll error

Although manual solution is kind of complicated and risks involved, it is still feasible if you are an experienced computer user, it won't be that hard for you to do so, here is some of the common fix steps that I would like to share with you, simply follow the instruction carefully to proceed.

cdosys.dll errors may sometimes caused by file malfunction, which means that the cdosys.dll file is either corrupted/damaged or missing from the system, for example, deleted accidentally by computer users without notice, or removed/damaged by virus or malware, therefore computer generates error while it call for the file, but if you can replace the problematic file with a new and functional copy, it could most likely help you fix the error. So, where to find a new copy of the file? If you have internet connection, that would be no difficulty to do so, simply visit search engines like or, search for the keywords of cdosys.dll download, and you will be able to find out a bunch of website that allow you to download the file for free, simply download the file, and then place it to the original location in your computer, (usually it is C:\Windows\System32), go to start > run, open the cmd commend window, and then use the commend of'regsvr32 cdosys.dll' to register the file into the system, and it's done. Alternatively, you can also get the file copy from another proper functioning computer by using flash drive.

Use System Restore to undo recent system changes.
If you suspect that cdosys.dll error was caused by a change you or someone else made to your registry or other system configuration then a System Restore could end cdosys.dll error.

Run the sfc /scannow command to replace any missing or incorrect operating system related DLL files.
System File Checker (the proper name of the sfc command) will replace any damaged or missing Microsoft supplied DLL files.

Perform a repair installation of Windows.
If the individual cdosys.dll troubleshooting advice above is unsuccessful, a repair installation of the operating system should restore all Windows DLL files to their original working versions.


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