Can experiment Windows update error 0x800700c1 when you try to install the cumulative update 2017-05 for Windows 10, version 1703, for an x64-based system (KB4020102). Due to this error, you may have a lot of problems on your PC like hang the windows start button, the program does not respond, the application starts and closes too slow, etc. Apart of this, additionally there may be security related issues in Windows operating system.
How to fix Windows update error 10 0x800700c1
Method 1: fix using advanced system repair tool
The most common reason behind Windows update failed is corrupt or damaged system files like DLL files, exe files, sys files, etc. There are hundreds of small system files that work for specific tasks. If one of the files is replaced, removes or damages, you might get Windows update error 0x800700c1.
Download and install the advanced system repair tool and scan your PC. Has the large database with 25 million files. It will find all the corrupted or deleted system files and reinstall them with the new one. Later, optimizing with advanced system repair tool, try installing the windows update again.
Method 2: Reset the software distribution folder.
The software distribution folder contains all installed update files. If this folder has a corrupted installation file, can prevent your PC from installing the latest updates. Resetting the software distribution folder is a very good idea to fix this problem. Here are the complete steps to reset the software distribution folder.
Paso 1: Open Command prompt as administrator
Paso 2: Now run the following command one by one.
net stop wuauserv
net stop bits
net stop cryptsvc
ren% systemroot% System32 Catroot2 Catroot2.old
ren% systemroot% SoftwareDistribution SoftwareDistribution.old
home grandson wuauserv
net start bits
net start cryptsvc
Paso 3: Close the command prompt and try updating again.
Method 3: Run the DISM command to correct this error
The DISM command is a short form of Deployment Image Servicing and Management (DISM.exe). This command generally fixes update problems and enables your PC to install the latest updates without any errors.. Here is the complete guide on how to use the DISM command in Windows 10.
Paso 1: Open command prompt as administrator.
Paso 2: Run the following commands one by one. It may take a while to finish, so relax and be patient.
DISM /Online /Cleanup-Image /ScanHealth
DISM /Online /Cleanup-Image /CheckHealth
DISM /Online /Cleanup-Image /RestoreHealth
Paso 3: After finishing this procedure, try installing the windows update again.
Method 4: disable Antivirus, Windows Defender and Firewall for a while
Additionally, antivirus and firewall may cause the 0x800700c1 problem. The firewall can block the incoming connection for updates if it finds any suspicious files in it. It can also block the installation of updates if it finds the suspicious file in it. Disable your antivirus and firewall for a moment and then try to install the updates. Most likely you will not get the above error.
Method 5: run the system update readiness tool
System Update Readiness Tool is a small tool developed and distributed by Microsoft. This tool is used to repair update related problems in Windows 7. You can download this tool from the following link:
https://microsoft.com/en-in/download/details.aspx?id=20858
After installing this tool, run as administrator. It will automatically reset all Windows update components and provide you with a clean environment to install Windows updates.
Resume
It is post analysis 5 Methods to Fix Windows Update Error 0x800700c1. If you are also facing the same error and cannot find a solution to fix it, this post could help you a lot.
