Windows 7 + Sharepoint UNC = SLOW
Posted on 2009-12-31
Upgraded to Windows 7 and almost everything is great. One problem that I've been unable to resolve though is that accessing Sharepoint via UNC path from this OS is EXTREMELY slow.
This isn't a network problem, and it's not a server-side performance problem. How do I know? Well ponder these facts:
1. The XPMode guest running inside the Win7 host can access exactly the same UNC paths very quickly by comparison, at the same times.
2. The server is fast via UNC for all XP clients and very slow for the same operation for all Win7 clients.
3. Caching on the server side isn't affecting these results -- it doesn't matter which guests go first, XP is always much faster than win7 when accessing sharepoint via unc path.
How big is the problem? Well it can literally take 30 seconds to open a folder on win7 that takes less than 1 second on xp. It doesn't *always* take 30 seconds -- sometimes it's only 5 or 10 seconds -- but it almost always takes much longer on win7 than on xp.
This problem does NOT extend to accessing sharepoint via web browser -- that works fine from both XP and Windows 7.
It doesn't seem to be a difference between 32-bit and 64-bit win7. I'm on x64, but I've tested several 32-bit clients with the same results.
Any ideas? Can anyone replicate this?
Note that I'm only talking about SHAREPOINT unc paths, NOT "normal" file shares. Accessing c$ on the server from either client is fine.