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We have a bunch of Windows 7 x64 machines that we cannot instal Lync on, teh error is:
'Copying setup files to the local drive failed
check log for details'
Except there are no logs to check - where do we go from here? Has anybody else had this?
I would like to confirm if you have tried to install Lync manually from Office 365 Portal--Admin page under Downloads instead of running it from the download link directly?
Based on the current situation, I would suggest you troubleshoot this issue by performing a clean boot in Windows 7.
You may perform a clean boot by referring to the steps in the link below and see if Lync could be installed or not.
I would suggest you to install Lync Using the Following URL:
For x32 bit Operating System:
For x64 bit Operating System:
Uninstall the Lync Online and Reinstall it using this URL according to the Operating System( 32 bit or 64 bit)
In Download window, please choose Save and save it on the computer
Double click the downloaded package to install.
Thanks and Regards,
Hi Surya - those are the download links that we used, it did not solve the problem.
We have not heard from you in a couple of days.
Please post back at your convenience if we can help further.
I just got the same error message today on one of my computers , the installation package worked on all computers expected this one (windows 7 x64).
So I tried to log in with another windows account and I was able to install it successfully.