You’ve probably come here because you were trying to install Microsoft .NET Framework 3.5 on Windows 8.1 and it kept on failing with this silly error, right?
There are some resources on this one online from uninstalling certain updates that aren’t actual anymore to other hacks, but the one that worked for me and is worth giving it a try is just temporarily pausing the antivirus, installing the .NET Framework and resuming it again. In my case it was avast! Antivirus Free, but considering the number of these errors found online, it probably isn’t limited to avast! only.
Because you are disabling antivirus, make sure you only use .NET Framework installer from a trusted source that is digitally signed by Microsoft Corporation. Like the one on link below (goes to official Microsoft webpage).
DOWNLOAD:
.NET Framework 3.5 installer from Microsoft webpage
Same problem solved in the same way. Thanks a lot 😉
LikeLike
It worked, Thanks, you’re a genius.
LikeLiked by 1 person
After wasting hours trying Microsoft solutions, this solved the issue in seconds.
LikeLiked by 1 person
Thanks ALOT!
Same problem; avast! blocked the installation (but did not show any messages).
Tried a 10 minute pause and et voilà, it works!
LikeLiked by 1 person
Same for me, just pause avast for 10 min and it will solve the issue
LikeLike
Totally worked worked for me. Thank you!
LikeLike
ah super silly problem but recover thank u
LikeLike
Thanks a lot!!! It really works!!! Also avast was the problem…
LikeLike
Thank you man ! i was stuck with this for hours …..
LikeLike
Finally a working solution, great find!
LikeLike
Thank you very, very much!!! Worked very well for me!!
LikeLike
Thank you.
LikeLike
GREAT. Made my day. gone is avast…
LikeLike
Awesome!
LikeLike
This fixed my problem too. I also use Avast Free. Thanks!
LikeLike
Thank very much, I love you.
this solved the issue in seconds
LikeLike
man thats worked,nice post dude
LikeLike
That works! You Genius
LikeLike
Many Many Thanks!! 🙂
LikeLike
Thank You, tried several tricks, but this did the job 😉
LikeLike
thanks a lot 🙂
LikeLike
Brilliant, thanks a lot!
LikeLike
Thanks, you save my time.
LikeLike
This also works for Windows 10!!!!
LikeLike
Thanks a lot.. this works for me also!!!!
LikeLike
Thanks a lot, worked like magic
LikeLike
Thank you man!
LikeLike
Thanks worked a treat
LikeLike
Realy , it works too. i am more than happy
LikeLike
Than you so much.
LikeLike
Resolved my issue….thanks man… 🙂
LikeLike
Tried a 10 minutes pause and et voilà, it works! thanks you are the best.
LikeLike
Yeah It works for Me thank u bro
LikeLike
thanks bro it worked out!
LikeLike
thank you! how did you find the solution?
LikeLike
Basically by mistake 😀
LikeLike
Man… Thank you very much. i’ve search for this solution for hours. you save my time.
May God Bless u. 🙂
LikeLike
notorious avast
LikeLike
worked. Avast blocked it. Good guy
LikeLike
Good bless you.
Worked for me. Avast was blocking it, 🙂
LikeLike
Bad. Uninstalling Avast did not fix the problem. My error code is 0x80070490
LikeLike
Then it must be something else interrupting access to the files. Could be any other security software or system software that is related to file system access.
LikeLike
Dude, they said to simply turn off the sheilds for a moment for one, which is done by right clicking the avast logo in the lower right corner of your screen. You weren’t suppose to uninstall it. Number two, this is specifically for 0x80071A90 not 0x80070490.
You should have read everything before proceeding with the processes.
LikeLike
Surprisingly worked after hours of pain
LikeLike
AVASSSSTTT!
LikeLike
Fixed, thank’s
LikeLike