Update Error: Require Installation Of Untrusted Packages

Posted by One Zero on Ask Ubuntu See other posts from Ask Ubuntu or by One Zero
Published on 2012-03-29T11:55:46Z Indexed on 2013/08/02 16:05 UTC
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updates

screenshot

I have googled and found out Updates don't install because of "untrusted packages".

It didn't fixed the error. So, how do I fix my GUI update?

Updated

 sudo apt-get update && sudo apt-get upgrade  < working 
 The following packages will be upgraded:
 ambiance-colors radiance-colors
 2 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
 Need to get 5,029 kB of archives.
 After this operation, 7,614 kB of additional disk space will be used.
 Do you want to continue [Y/n]? y
 WARNING: The following packages cannot be authenticated!
 ambiance-colors radiance-colors
 Install these packages without verification [y/N]?

Working but when I update from GUI or try to install software from Ubuntu Software Center I got same error as shown in above picture.

For every software I have to install it from command line because I got same error when install software from Ubuntu Software Center.

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Developer IT

Update Error: Require Installation Of Untrusted Packages - Developer IT

Update Error: Require Installation Of Untrusted Packages

updates

Updated

Related posts about updates

sudo apt-get update problem

Why do I have to run aptitude update twice to install Ruby?

Automatic Windows Defender Updates with Manual Windows/Microsoft Updates

yum update works but yum --security update fails to work in Fedora 12

Cannot update, apt-get cannot fetch index files

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