Lync 2013 installation problem - dll file missing

Hi,
I've encountered this problem with Lync 2013 installation on 2 different computers.
Error message:
"perfboost.exe - System Error
The program can't start because appvisvsubsystems32.dll is missing from your computer. Try reinstalling the program to fix this problem."
The first time i got this error was while installing Lync 2013 (32-bit ver.) for a user with an E1 Office 365 plan and an Office 2013 Home and Business suite installed (32-bit version) on a 64-bit Win 7 Pro machine. The installation completed despite the
error message but Lync could not connect to the server saying that "the server for
domain.eu cannot be found". I tried the manual configuration with the same result. I'm confident it's not a DNS problem as other users within the same domain are using Lync 2013 with no connectivity issues.
The second time I got the error was when installing Lync 2013 on a new machine, also with Office 2013 H&B 32-bit and Lync 2013 32-bit downloaded from the user's Office 365 account (also plan E1). The installation also completed but I had no problems
logging the user in (it's another user, same domain)
Anyone has a clue about this? Should I install the 64-bit Lync version instead? Would it conflict with the 32-bit Office 2013?
Thanks.
Luka

Hi Teklace,
The issue is more related to Office, You may repair Office 2013 using the following link and check if it works fine as expected:
https://support.office.com/en-us/article/Repair-an-Office-application-7821d4b6-7c1d-4205-aa0e-a6b40c5bb88b?ui=en-US&rs=en-US&ad=US
Some similar cases for your reference.
https://social.technet.microsoft.com/Forums/office/en-US/4fdea64f-e7c8-4e08-95b2-fb54984d617f/appvisvsubsystems32dll-error?forum=officesetupdeploy
http://answers.microsoft.com/en-us/office/forum/officeonline-word_online/appvisvsubsystems32dll/75c4067b-d23f-4d50-bd23-82934852fed8
http://answers.microsoft.com/en-us/office/forum/office_365hp-office_install/appvisvsubsystem32dll/106805c1-5928-4a7e-a8b7-6c438e279969
If the error still exists, to ensure you get better support, I suggest you turn to our Office forum for dedicated support. With the assistance provided there, it is more likely the issue can
be resolved. Sorry for any inconvenience this caused. Thanks for your understanding.
https://social.technet.microsoft.com/Forums/office/en-US/home?category=officeitpro
Best regards,
Eric

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