Can't Verify OSX Mavericks Download

Well Ok, here is some advice to the ppl, i have a computer store and i been trying a lot at the same time with differents apple laptops, and I have a answer, the installer have some serius issues with that error, because I downloaded a couple times the installer, deleted and downloaded again, so i was unable to install on one 13'' laptop, getting the FERIFIED error, what I did was install 10.6, upgrade to 10.6.8 then install the copy of 10.9 that I made on the USB by Diskmaker X, and worked nice, I tried the same USB with another laptop, 15'' and no problem, worked fine, in another 15'' Didn't work, so I tried with the 10.6 and didnt work because that laptop doesnt accept that OSX, so I downloaded 10.8.5, make a usb, I tried to install and I get an error, then tried with the 10.9 usb and worked fine!

I downloaded the installer once and have installed it on my five acs without any issues, so it is not a universal issue. I downloaded it over a high speed connection on WiFi. I then transfered it to a USB Flash Drive to tranfere it to the other computers.

Cheers

Pete

I found a much easier one: http://aaronkondziela.com/2013/11/this-copy-of-the-install-os-x-mavericks-applic ation-cant-be-verified-it-may-have-been-corrupted-or-tampered-with-during-downlo ading/comment-page-1/#comment-552

In my case I was running a clean install so I didn't know how to set the date just like Apple support suggests.

After knowing the command syntax date “+%m%d%H%M%Y.%S” it was a blast.

Really...a 20 second fix after 2 hours of search 🙂

Hope it helps.

Ciao

Changing the date does the trick just fine! Thanks!!!

I solved the problem in this manner:

I left iTunes Radio playing while the download was in process, and it finally produced a usable file.

I have downloaded the file 10+ times without success previously.

I am using an iMac over WiFi, and I tried the download over two different ISPs.

Same problem here !! So many issues just to install the OS

I should just go back to using Windows.....

Good luck with that.

Emorr wrote:

Same problem here !! So many issues just to install the OS

I should just go back to using Windows.....

Probably for the best.

Good Luck

Pete

The problem is the date/time, if it is incorrect you will have this problem every time

to fix:

date ddmmhhmmyyyy

Source:http://blog.mconserv.net/2013/10/install-os-x-mavericks-application-cant.html

The date/time is only one possible cause. In my case, the date command was producing the correct time, date and time zone. While I was finally able to get Mavericks installed last month, I ran into exactly the same download problems with Yosemite.

On my other computer, I used the OS X installer download to create a bootable USB installer drive. This installer also failed to work on the problem machine. It did however load the 10.10 Utility partition, so I was able to repartition the drive, reformat it and download a copy of Yosemite from this clean environment. Again, the installer failed to download multiple times, regardless of ethernet vs wi-fi, no screensaver or sleep active or user input. I even tried installing to an external drive to rule out the hard drive in the machine. Still no success.

The installer Log gave an error about unable to verify InstallESD.dmg and there was an error about verification failure from hdiutil.

This morning, I pulled the 8gb Crucial branded RAM upgrade replaced with the old RAM shipped by Apple. Presto. Installer works fine, and I'm posting from the machine. I suspect the installer that would not verify on the USB drive will also now work to install.

In the end, my failure was based upon faulty RAM.

Note: I could not access the Apple diagnostic to test the RAM.

Did the date trick, didn't work, really angry its work for some of you and not others. *** is wrong, i cannot download 6gb each time it takes hours on my rubbish conection

why is this happening?

You might want to consider starting a new discussion. Since this one is marked solved, less people are likely to look at it. You can link to this one.

Just change your time preferences like I do it in this screenshot and then restart mavericks installer!