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How Do I Repair .net Framework

Written By Tuesday, March 22, 2022 Add Comment Edit

According to Microsoft, "Yous can think of the [.Internet Framework ] as an agent that manages code at execution time, providing core services such every bit memory direction, thread management, and remoting, while also enforcing strict blazon safety and other forms of code accuracy that promote security and robustness." This is a fundamental component of Windows.

The .Internet applied science is evolving and Microsoft has released several interdependent versions and Service Packs for .NET over fourth dimension. Errors can result when all components are non preinstalled (such as in Windows 10 and eight), when a revision, new version or service pack for .NET fails to install properly equally role of routine Windows updates, or when Windows XP is non upwards-to-date with both Service Pack 3 and .NET framework.

To activate missing components of Microsoft .Net Framework in Windows x:

  1. Right-click on the Windows Start Carte du jour icon
  2. Select Programs and Features (at the top of the menu)
  3. Click "Plow Windows Features On or Off"
  4. Verify that ".NET Framework iii.5 (includes .Net 2.0 and 3.0)" is turned On (displays ).
    • If non On, click on the cheque box (so it displays ) in front end of ".NET Framework 3.5 (includes .Internet two.0 and 3.0)".
      • Note: You do not demand to check either of the "Windows Advice Foundation" features under the ".Internet Framework 3.5..."
  5. Click the OK button at the bottom of the Windows Features dialog box, and Shut the Command Panel
  6. Select "Download File from Windows Update" and select "Yep" to install
  7. After the .Cyberspace files end downloading and installing, re-start Windows when prompted.

To enable the .Cyberspace Framework three.5 feature in Windows 8.1, 8.0, Server 2022 or Server 2022 R2:

  • Open the Windows Command Console
  • Select Programs (or Programs and Features)
  • Select "Turn Windows features on or off"
  • Select ".Net Framework iii.5" and click OK.

In earlier versions of Windows, errors such as

  • "Format of CTIMlsServerNet.dll non recognized or is invalid";
  • "Could not load file or assembly ... incorrect format...";
  • "Could not load Sorttbs.nlp";
  • "Unhandled exception has occurred in your application";
  • "Interface not Registered";
  • "Source files could not be found" (in Windows viii or viii.1);
  • "Source files could not be downloaded" (in Windows 8 or 8.1); or
  • CTI Navigator desktop (fix to Internet) disappears at login, or Ship Listing or Send Photograph neglect (too see compatibility note below)

point that i or more of the Microsoft .NET Framework components in the Windows on your estimator probably is corrupted or missing. Before following any suggestions on this webpage, see CTI'southward disclaimer of warranty (below) .

Ensure that your Windows is upwards-to-date (including Service Pack 3 for Windows XP). To encounter which version of Windows and which Windows service pack (SP) is running on your computer, open the Windows Control Panel and select System. The latest installed Service Pack number is listed below the version of Windows.

To brandish the Windows Update History on this computer from the Command Panel's System screen:

  • in Windows 10, left-click on Start > select Settings > Update & Security > Windows Update (on the left pane) > Avant-garde Options (at the lesser of the screen) > "View your update history" (in the eye of the screen).
  • in Windows Vista, 7, and 8 click on "Windows Update" in the lower left pane and and then click on "View Update History";
  • in Windows XP select the "Automatic Updates" tab, click "Windows Update Website", and so on the update website click "View you update history" under Options.

Look for "Failed" or scarlet X abreast any updates that never completed successfully, especially whatever that include "NET Framework." If your latest update to Windows (whatsoever version) included a .Cyberspace component, and everything including CTI Navigator was working correctly before this Windows update, attempt restoring your Windows system files back to the date before the update was installed (see Restore Windows Arrangement files in the related articles below), and so update Windows again.

Otherwise, to fix a Microsoft .Internet Framework fault requires removing/uninstalling the corrupted .Internet component and so re-installing it and all of its associated components in the .Internet Framework. To accomplish this, Microsoft recommends you use the Microsoft automatic .NET Framework repair tool described below.

Automated Repair of .NET Framework

Microsoft provides a wizard-based .NET Framework Repair Tool that "detects and tries to fix some frequently occurring bug with the setup of or with updates to the Microsoft .NET Framework." To download and run this tool on your reckoner, click on "Microsoft .NET Framework Repair Tool " and follow Microsoft'south instructions. To see more than information near this tool, click on "Microsoft .NET Framework Repair Tool Description."

If Microsoft's automated repair tool fails to gear up your error or you are not comfortable running this tool or trying to repair your Windows .NET Framework files yourself (see manual repair below for advanced users), CTI recommends that you lot have a local computer technician test and repair the Windows .Internet Framework in your computer. Otherwise, for costless "computer repair, service and support" (such as repairing Windows) Realtor� members can contact the http://TechnologyHelpline.com. This tech helpline is funded by your land Association of Realtors� as a fellow member do good and tin can exist reached by phone (Monday - Saturday) at

  • FAR = 407-587-1450; or
  • GAR = 877-573-5611.

Repair Tool Version Annotation : The current version of the Microsoft's automated repair tool (dated 10-08-2012) supports repairing the .Internet Framework 4, .NET 3.5 SP1 (includes .NET three.0 SP2 and .NET 2.0 SP2) on Windows 7 and earlier (Vista, Server 2008, Server 2003, and XP).

Compatibility Note : Incorrectly setting CTI Navigator Desktop to run in a "Compatibility Manner" unlike from the version of Windows in which it is running tin can cause CTI Navigator to suddenly disappear whenever a CTI Navigator function (such as Login or Send) requests Cyberspace access. To confirm or right that CTI Navigator is non set to run in Compatibility Mode: open Windows Explorer > browse to C:\Program Files\CTI Navigator [in a 64-bit version of Windows browse to C:\Program Files (x86)\CTI Navigator]) > right-click on CTI Navigator.exe > select Properties > click the Compatibility tab > verify that "Run this programme in compatibility mode for" is not checked.

.Net Framework in Windows 8

By default, .Cyberspace Framework iv.v is enabled in a new or clean installation of Windows viii, merely .Cyberspace 3.5 is non included. The files for .NET 3.5 are available on the Windows 8 installation media as an optional feature. When an app requires .NET Framework 3.5 (or .NET 2.0), Windows 8 should automatically asking permission to download the missing files from Windows Update. If this fails, users can enable .NET Framework through the Windows eight Command Panel or from the system ISO epitome file.

To enable .Net Framework 3.5 (and earlier) in Windows 8 Control Console (if needed by an app):

  1. Open the Control Panel (use the Settings Charm on the Desktop Mode, or type Command Panel on the Tiles mode)
  2. Select Programs and Features
  3. Select "Turn Windows features on or off" (to the left side of the list of installed programs)
  4. Check the box beside .NET Framework 3.5 (which includes .NET 2.0 and iii.0)
    • Notation: You lot exercise not demand to select any optional components in the listing
  5. Click OK.

To enable .NET Framework 3.five from a Windows 8 ISO image:

  1. Copy \sources\sxs\  from the mounted operating system build ISO paradigm to dotnet35  or similar folder.
    • For instance, is the image is on drive "Due east" and Windows eight is on drive "C", the copy command would exist
      xcopy Due east:\sources\sxs\*.* C:\dotnet35 /s
  2. Execute this command using admin privileges:
    • Dism.exe /online /enable-feature /featurename:NetFX3 /ALL /Source:
      C:\dotnet35 /LimitAccess

Note: Copying from the sources\SxS\ folder can be used but is non a Microsoft supported mechanism for normal distribution of .NET Framework 3.5. (see Windows 8 .Internet Framework 4.5 is default and .NET Framework three.v is optional).

Manually Repair .Cyberspace Framework (avant-garde users only)

Always try Microsoft's automated repair tool offset (meet the preceding section). If y'all are an avant-garde computer user and Microsoft's automatic repair tool fails to resolve the trouble, you can attempt to manually repair .NET Framework yourself, contact the state association sponsored technology hotline (see above) for assistance, or take a local reckoner technician repair information technology for you lot.

To manually repair .Internet, follow the steps in the prescribed order for the approach chosen below. Before you start, ensure that your Windows has the latest Service Pack and the latest security patches installed for your version of Windows. (Sometimes Microsoft'southward latest update includes a hot set for the problem.) Beware that manual repair may take more than an 60 minutes, depending on your computer and which components are damaged or missing.

The sections below represent 3 approaches to rebuilding Microsoft . NET Framework:

  • Standard Manual Repair and Rebuild (safest but slowest approach)
  • Automated Cleanup of All Versions and Streamlined Re-Install (if standard rebuild fails)
  • Reinstall Only .NET Framework 3.v SP1 (may be appropriate if .NET was working until recently)

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Standard Manual Repair and Rebuild

To manually repair or rebuild Microsoft .NET, complete the following steps in lodge as appropriate for your version of Windows:

  1. Verify or create a Restore Point in Windows System Accessories.
  2. Command Console >XP: Add together/Remove Programs >

    • .NET 2.0 SP 2 > Support > Repair

    • .Net 3.0 SP 2 > Back up > Repair

    Vista/vii: Programs and Features > .Cyberspace 3.v SP1 > Modify/Remove > Repair.
    If problem is not resolved by an automated repair, proceed with the post-obit steps.

  3. . NET Framework 3.0, and 2.0 are included as part of Windows Vista Operating Organization; and .Cyberspace Framework iii.v, iii.0, and two.0 are included as part of Windows7 Operating System. To repair Cyberspace Framework iii.5, 3.0, and 2.0 in Windows Vista or 7

1) Start > All Programs > Accessories

two) Correct-click on Command Prompt > select "Run as Administrator" > Keep

three) Run "sfc /scannow" to automatically replace incorrect/corrupt versions of system files if possible

4) If SFC could not ready some files, follow Microsoft's instructions at

  • " How to analyze the log file entries that the Microsoft Windows Resources Checker (SFC.exe) plan generates in Windows Vista " at http://back up.microsoft.com/kb/928228; and

  • " Re-create Good DVD Files To Supercede Corrupt OS Files " at http://www.vistax64.com/tutorials/86959-access-vista-install-dvd-files.html .

  •  If the problem is not resolved, proceed with the following steps.

  1. In Windows Explorer, verify or create a C:\Downloads folder (or "C:\Windows\Microsoft.NET\Framework\Downloads").
  2. Download dotNet Fix files appropriate for your version of Windows to your Downloads binder (use links at http://msdn.microsoft.com/en-us/netframework/cc378097.aspx ; or go to specific download links below):

1)Windows XP, 2000, Server 2003:

  • 2.0 -dotNetfx.exe for 32-bit or NetFx64.exe for 64-bit Windows [redistributable] at

    • (x86) http://www.microsoft.com/downloads/details.aspx?FamilyID=0856eacb-4362-4b0d-8edd-aab15c5e04f5

    • (x64) http://www.microsoft.com/downloads/details.aspx?familyid=B44A0000-ACF8-4FA1-AFFB-40E78D788B00

  •  2.0 SP2 -Netfx20SP2_x86 exe for 32-flake or Netfx20SP2_x64 exe for 64-bit Windows [w/ cumulative gyre-upwards updates] at

    • http://world wide web.microsoft.com/downloads/en/details.aspx?FamilyID=5b2c0358-915b-4eb5-9b1d-10e506da9d0f&displaylang=en

  •  3.0 -dotNetfx3.exeast for 32-bit or dotnet3_64.exe for 64-fleck Windows at http://world wide web.microsoft.com/downloads/details.aspx?FamilyID=10CC340B-F857-4A14-83F5-25634C3BF043

    3.v SP1 -dotNetFx35setup.exe to install only components needed for that figurer (recommended) at

    • http://www.microsoft.com/downloads/details.aspx?familyid=AB99342F-5D1A-413D-8319-81DA479AB0D7
    • or download total 3.5 SP1 pkg (231 MB with lawmaking for all supported versions of Windows) at http://www.microsoft.com/Downloads/details.aspx?FamilyID=d0e5dea7-ac26-4ad7-b68c-fe5076bba986

  • 3.5 SP1 -dotNetFx35setup.exe to install only components needed for that computer (recommended) at

    • http://world wide web.microsoft.com/downloads/details.aspx?familyid=AB99342F-5D1A-413D-8319-81DA479AB0D7
    • or download total 3.5 SP1 pkg (231 MB with code for all supported versions of Windows) at  http://www.microsoft.com/Downloads/details.aspx?FamilyID=d0e5dea7-ac26-4ad7-b68c-fe5076bba986

      iv.0 - dotNetFx40_Fullx86_x64.exe optional standalone installer at http://www.microsoft.com/downloads/en/details.aspx?displaylang=en&FamilyID=0a391abd-25c1-4fc0-919f-b21f31ab88b7

    • 2)Windows 7 and Vista : download just 3.5 SP1 (because 2.0 and iii.0 are office of the Operating Organisation).

    3)  dotNetFx_Cleanup_tool.zip at  http://cid-27e6a35d1a492af7.skydrive.live.com/cocky.aspx/Blog_Tools/dotnetfx_cleanup_tool.zip

    1. In Control Panel, uninstall (highest to lowest displayed)
      • Microsoft .Net Framework 4.0 (if installed)
      • Microsoft .Net Framework 3.5 SP1
      • Microsoft .NET Framework iii.0 SP2
      • Microsoft .NET Framework 2.0 SP2
    1. Optionally (meet alert below): To ensure removal of all changes fabricated to both version 2.0 and three.0 by the three.5 Service Pack ii Update,
      • Unzip dotNetFx_Cleanup_tool.zip
      • Run dotNetFx_Cleanup_tool.exe
      • Remove Merely .Net iii.v
    2. Restart Windows
    3. In Windows Explorer, Rename (add X prefix to) the version folders that display in C:\Windows\Microsoft.NET\Framework\
      • v2.0.50727 > Xv2.0.50727
      • v.iii.0  > Ten5.3.0
      • v3.5  > Tenv3.5
      • v4.0 > Tenfive.iv.0
    4. Install (lowest to highest):
      • Windows XP, 2000, Server 2003
        •  2.0
        •  iii.0
        •  3.5 SP1
        •  4.0 (optional and only if originally uninstalled)
      • Windows Vista/vii
        •  three.5 SP1
        • iv.0 (optional and simply if originally uninstalled)
    5. Run Windows Updates manually to install related hotfixes and security updates. (Yous must run these manually to be able to see any mistake letters which might indicate what component has an installation problem, if whatever.)

Alarm : The .Internet Framework Cleanup Tool should exist used with caution. Information technology not just removes the selected version files, hotfixes and service packs to that version, simply it also removes files and registry keys shared with other versions of the .Cyberspace Framework. All associated versions of .Internet Framework must exist repaired or re-installed (in numeric sequence) after using the Cleanup Tool.

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Automated Cleanup of All Versions and Streamlined Re-Install

Utilise the following procedure if the preceding standard repair and re-build (described higher up) does not succeed.

  1. Download .NET Framework 1.1
  2. Download .Internet Framework one.one SP1
  3. Download .Cyberspace Framework 3.5 SP1 (file proper name dotNetFx35setup.exe at http://www.microsoft.com/downloads/details.aspx?FamilyID=ab99342f-5d1a-413d-8319-81da479ab0d7&displaylang=en )
  4. Download the .NET Framework Cleanup Tool (file proper noun dotnetfx_cleanup_tool.zip as above, or seeUser'due south Guide and download links at http://blogs.msdn.com/b/astebner/annal/2008/08/28/8904493.aspx )
  5. Unzip dotNetFx_Cleanup_tool.nil (see warning above)
    • Run dotNetFx_Cleanup_tool.exe
      • In Windows XP, use the Cleanup Tool to Remove All .Net Framework versions (one.0, 1.1, 2.0, 3.0, and iii.5)
      • In Windows Vista, Remove merely .Cyberspace iii.v (because earlier versions of .Internet are office of the operating system)
  6. Restart Windows
  7. Install .NET Framework 1.ane
  8. Install .NET Framework 1.1 SP1
  9. Install .Cyberspace Framework 3.5 SP1
    • Note 1: .NET iii.v SP1 includes 2.0 SP2 and 3.0 SP2 subcomponents
    • Note two: This set up does non include .NET 4
  10. Restart Windows
  11. Install Windows Updates .

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Reinstall Merely .Net Framework 3.5 SP1 Full Cumulative Update

The .Cyberspace Framework iii.v Service Pack 1 is a full cumulative update that "includes cumulative servicing updates to the .Cyberspace Framework 2.0 and .Internet Framework 3.0 subcomponents." If .Cyberspace was working correctly until recently, you may only demand to united nations-do and reinstall the 3.5 SP1 Update every bit follows.

  1. Verify or create a Restore Point in Windows Organisation Accessories.
  2. In Windows Explorer, verify or create a C:\Downloads folder (or "C:\Windows\Microsoft.NET\Framework\Downloads").
  3. Download the .NET Framework iii.5 SP1 from Microsoft (file name dotNetFx35setup.exe at http://www.microsoft.com/downloads/details.aspx?FamilyID=ab99342f-5d1a-413d-8319-81da479ab0d7&displaylang=en ) into your Downloads folder
  4. Download the .Internet Framework Cleanup Tool (file name dotnetfx_cleanup_tool.null at http://cid-27e6a35d1a492af7.skydrive.live.com/self.aspx/Blog_Tools/dotnetfx_cleanup_tool.zero or seeCleanup Tool User's Guide and download links at http://blogs.msdn.com/b/astebner/archive/2008/08/28/8904493.aspx) into your Downloads binder
  5. Unzip dotNetFx_Cleanup_tool.zippo (encounter warning in a higher place and culling note below)
    • Run dotNetFx_Cleanup_tool.exe
    • In Windows XP, use the Cleanup Tool to Remove Only .Netii.0, iii.0, and 3.5
      • Note: If you "Remove All" .Internet Framework versions in Windows XP, follow the instructions above for Automated Cleanup and Streamlined Re-Install to include .NET version 1.1 and ane.1 SP1.
    • In Windows Vista, Remove Just .NET 3.5 (considering earlier versions of .NET are office of the operating system)
    • Notation: An alternative to using the dotNet Cleanup Tool is to uninstall and rename versions three.5, 3.0 and ii.0 as described in the Standard Manual Repair and Rebuild section higher up.
  6. Restart Windows
  7. Install .Net Framework 3.five SP1 (which includes 2.0 SP2 and 3.0 SP2 subcomponents)
  8. Restart Windows
  9. Install Windows Updates.

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Disclaimer of Warranty . All services are provided under the terms and conditions of CTI'due south license agreement accompanying CTI Navigator. Assistance in any form is provided just as a convenience to licensed users of CTI products. Problems and solutions may depend on the nature of your system surround and other parameters that are united nationsknown to CTI. By requesting assistance, user agrees that actions and solutions described, suggested or implemented by CTI staff are entirely at the user's own risk and are provided without warranties of any kind. Nether no circumstances, including negligence, shall CTI or whatsoever of its employees be liable for whatever straight, indirect, incidental, special, punitive, consequential or other damages, loss, cost or liability whatsoever that outcome from or are related to apply of technical back up provided by CTI.

Related manufactures and Internet links:

  • CTI's Terms of Utilize
  • .NET Framework on Windows eight and 8.one
  • How to determine which versions and service pack levels of the Microsoft .NET Framework are installed (past Microsoft)
  • Microsoft .Cyberspace Framework Repair Tool (Microsoft'southward Download site)
  • Microsoft .NET Framework Repair Tool Clarification (by Microsoft)
  • Repair Installation of Microsoft .Net Framework from Original Source (by Microsoft)
  • Restore Windows System files
  • Source Files Could not exist Found or Downloaded in Windows eight, 8.ane, Server 2012, or 2022 R2
  • Update for .NET Framework four.5 for Windows viii, Windows RT and Windows Server 2022 (by Microsoft)
  • Windows eight .NET Framework 4.v is default and .NET Framework 3.v is optional (by Microsoft)

Links to Microsoft'due south Instructions for .Net Framework:

  • 4.0 at http://www.microsoft.com/downloads/en/details.aspx?displaylang=en&FamilyID=0a391abd-25c1-4fc0-919f-b21f31ab88b7 ;
  • three.v SP1 at http://www.microsoft.com/downloads/details.aspx?FamilyID=ab99342f-5d1a-413d-8319-81da479ab0d7&displaylang=en ;
  • 3.5 at http://www.microsoft.com/downloads/details.aspx?familyid=333325FD-AE52-4E35-B531-508D977D32A6&displaylang=en ;
  • 3.0 at http://www.microsoft.com/downloads/en/details.aspx?FamilyID=10CC340B-F857-4A14-83F5-25634C3BF043 ;
  • two.0 at http://back up.microsoft.com/kb/908077 ;
  • one.1 SP1 at http://www.microsoft.com/downloads/details.aspx?familyid=A8F5654F-088E-40B2-BBDB-A83353618B38&displaylang=en
  • i.1 at http://www.microsoft.com/downloads/details.aspx?displaylang=en&FamilyID=262d25e3-f589-4842-8157-034d1e7cf3a3
  • ane.0 at http://support.microsoft.com/kb/320112
  • .NET Framework Cleanup Tool User'south Guide and Download Links
  • Windows Updates

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To become to CTI'south menu of Instructions to Fix Errors, click hither or utilize the back arrow at the superlative of your Internet browser.

To become directly to CTI'southward online Menu of Help and Tutorials, click here.

rev. 11.x.2015

Source: http://www.ctimls.com/Support/KB/Error%20Fixes/Fix_DotNet_Framework.htm

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