.net framework error

Hi everyone, I uninstalled old 4.5.2 and installed the new 4.6 today but got the above error log about unsuccessful installation. Then unfortunately, I tried to reinstall any old version but still got the same error code 0x80070643, HELP

Can you attach the mentioned msi log file here please?

Did we try to fix this in another section of the forums before? :)

See https://support.microsoft.com/en-us/kb/976982

GokAy said:

Can you attach the mentioned msi log file here please?

Did we try to fix this in another section of the forums before? :)

See https://support.microsoft.com/en-us/kb/976982

Thanks for reply.

For me, I have never mentioned this in this forum ever before.

For your link, I tried but no help, please find the attached .zip for LOG files

Do you have any external drives attached as you try to install? Try running the installer as admin.

Please run in cmd:

sfc /scannow

And if there are any corruptions found run in cmd:

Code:

findstr /c:"[SR]" %windir%\logs\cbs\cbs.log >"%userprofile%\desktop\sfcdetails.txt"

Attach the sfcdetails.txt here (should be on your desktop after running above command)

GokAy said:

Do you have any external drives attached as you try to install? Try running the installer as admin.

Please run in cmd:

sfc /scannow

And if there are any corruptions found run in cmd:

Code:

findstr /c:"[SR]" %windir%\logs\cbs\cbs.log >"%userprofile%\desktop\sfcdetails.txt"

Attach the sfcdetails.txt here (should be on your desktop after running above command)

I have two drives in my system: Windows 7=C: and D: both are internally connected to motherboard

I run SFC command with admin privilege and corruptions were found, please find the attached .zip for CBS file

Looks like it fixed the corruption, there was only 1 corrupt file to start with. Can you re-run sfc /scannow please?

GokAy said:

Looks like it fixed the corruption, there was only 1 corrupt file to start with. Can you re-run sfc /scannow please?

Did you try after running sfc?

There was a recent .net issue posted by someone else, that person got rid of it by upgrading to Windows 10. Now, of course I am not telling you to do so. Instead you could try a repair install (you will need to re-install device drivers and Windows Updates, programs and user files will be unaffected). Please read about it to get an understanding - Repair Install

There is also a 3rd party app (tweaking.com all-in-one Windows repair) which could help. But it is mentioned that it could induce a security risk because it gives rights to users to everything. Mind you many used it without issues but I will let you decide if you wish to give that a chance.

Let me know what you think.

GokAy said:

Did you try after running sfc?

There was a recent .net issue posted by someone else, that person got rid of it by upgrading to Windows 10. Now, of course I am not telling you to do so. Instead you could try a repair install (you will need to re-install device drivers and Windows Updates, programs and user files will be unaffected). Please read about it to get an understanding - Repair Install

There is also a 3rd party app (tweaking.com all-in-one Windows repair) which could help. But it is mentioned that it could induce a security risk because it gives rights to users to everything. Mind you many used it without issues but I will let you decide if you wish to give that a chance.

Let me know what you think.

Thanks again for your help.

I tried but unfortunately, same failure with same error code...

Is there other way to get rid of this rather than upgrade or repair?

Most likely a file/folder or registry permission issue (although can't be sure).

Try this from MS - Download Microsoft .NET Framework Repair Tool from Official Microsoft Download Center