We recently rolled out a small pilot group of Win10/Office 2016 (coming from Win7/Office 2010). Using the new version of Excel on Win10 takes about 10 seconds longer to open files compared to the old version (or the new version on Win7). It seems more evident with .xlsm files. Here is what I tried/ruled out:
Office 16 32 vs. 64 bit behaved the same on Windows 10
Removed any links to files and cleaned up formatting, and name ranges
Copied the file locally to take the network out of the mix
Disabled all add-ins
Installed Office 16 on a Win7 machine and it was faster to open
What I discovered is that if you run Excel 2016 on a Windows 10 machine as an administrator, the file opens as expected. Since none of our users are admins on their machines, this is going to be a huge problem. Has anyone run into this yet?
I should also mention that the Win7 (32-bit) computers are about 3 years old and the Win10 (64-bit) computers are brand new.
Thanks!