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Runtime error 255 occurs in the system if Microsoft .Net framework and run the programs of visual basic. Most of the runtime errors occur with visual basic with the error message Microsoft C++ library error or Microsoft C library error. Runtime error occurs in all windows versions such as windows 8/7, XP and Vista. This error is the result of missing system, failure software installation, and corrupt fm20.dll file, malicious programs injection etc. This error appears on the system with a blue screen of death and some warning messages but the main error message is Runtime error 255. When you meet with this problem you note that it hang or terminate the running programs. There are many types of runtime errors but all have their specific reason, some occurs due to hardware failure, some due to software failure and injected of virus or other parasite. If you got the runtime error 255 or other also then it is compulsory for you to try to fix this error as soon as possible because it may be dangerous for the system. Hard drive or windows may be crash.

  • The most common reason behind this error is installing incompatible or outdated driver, missing system files, corrupted registry file or damaged pc by viruses. Advanced System Repair Tool is the only solution for all the system errors. By installing this tool you will be able to remove above windows error.
    3 Steps to Fix this Error

    Step 1. Download Advance System Repair Tool [File Size: 15.7 MB]
    Step 2. SCAN your Windows PC
    Step 3. Click Fix button to Repair Error

Cause of runtime error 255:-

FM20.dll file is the one of the most important file of the windows which is responsible for setting and features of the Microsoft .NET product. This file is default installed in the setup of the software. If it is corrupt or damage then became the cause of runtime error 255. Sometime user not install the .NET framework and Visual Studio software successfully so during this unsuccessful process fm20.dll file is not installed in a proper way. If you are using components of Microsoft in your custom application then the fm20.dll file must be ibstalled in your system. Some of the controls are given –

Microsoft Forms 2.0 CheckBox
Microsoft Forms 2.0 ComboBox
Microsoft Forms 2.0 CommandButton
Microsoft Forms 2.0 Form
Microsoft Forms 2.0 Frame
Microsoft Forms 2.0 HTML SUBMIT
Microsoft Forms 2.0 HTML Hidden
Microsoft Forms 2.0 HTML IMAGE
Microsoft Forms 2.0 HTML OPTION
Microsoft Forms 2.0 HTML Password
Microsoft Forms 2.0 HTML RESET
Microsoft Forms 2.0 HTML SELECT
Microsoft Forms 2.0 HTML CHECKBOX
Microsoft Forms 2.0 HTML TEXT
Microsoft Forms 2.0 HTML TextAREA
Microsoft Forms 2.0 Image
Microsoft Forms 2.0 Label
Microsoft Forms 2.0 ListBox
Microsoft Forms 2.0 MultiPage
Microsoft Forms 2.0 OptionButton
Microsoft Forms 2.0 ScrollBar
Microsoft Forms 2.0 SpinButton
Microsoft Forms 2.0 TabStrip
Microsoft Forms 2.0 TextBox
Microsoft Forms 2.0 ToggleButton
Microsoft Forms 2.1 ControlPalette
Microsoft Forms 2.1 ControlSelector
Microsoft Forms 2.1 DataObject
Microsoft Forms 2.1 Font
Microsoft Forms 2.1 FontNew
Microsoft Forms 2.1 FormPackage
Microsoft Forms 2.1 Picture
Microsoft Forms 2.1 SubForm95
Microsoft Forms 2.1 Toolbox

Virus, Trojan, malware and other malicious programs also may be corrupt the fm20.dll file and it may be the reason of this problem. These harmful programs are specially developed by the cyber-crookers to disturb or damage the system users.

Get rid of runtime error 255:-

If you want to fix runtime error 255 then it is recommended to uninstall the Microsoft .NET and reinstall it because fm20.dll file is not redistributed. This file is included with the set up of the program and you can’t distribute it from the setup. You can find this file in Visual Basic 5.0 CD in the location \TOOLS\DaTaTool\Msdesign folder. You can only install this file by running the setup of Visual database tool. Scan the system with a powerful and updated anti-virus which can kill the harmful softwares and also protect the system.

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Fix Runtime error 255

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