In some cases, there are problems after installing Microsoft April 2010 Patch MS10-020 (KB980232). Microsoft acknowledges that there are problems and is collecting data to determine the root cause(s).
We have seen four symptoms. In each case, removing the KB980232 patch and rebooting the affected machine resolved the problem:
1). Errors saving from Office 2007 applications to network shares.
2). Not being able to read the contents of the Security tab when looking at the properties of a file on a file share. Click the image below to see a larger view.
3). Not being able to see the file and folder "owner" column information for file in a file share. The owner column information just shows blanks. Click the image below to see a larger view.
4). Crashes in explorer.exe when navigating to network shares.
Microsoft is working on a fix. Hopefully we will have an ETA soon. Until then removing MS10-020/KB980232 seems to fix the problem.
UPDATE (26 April 2010): It turns out this is a bug in Cisco WAAS (Wide Area Application Services). You need to upgrade your Cisco WAAS 4.0.x and 4.1.x installations to a patched version.
File Save/Save As Issues After Installing Microsoft Patch (KB980232)
When using the new Windows patch (MS10-020 KB980232), the file save/save-as operation may not be successful when WAAS CIFS optimization is turned on. A popup message indicating "There has been a network or file permission error. The network connection may be lost" is generated by the client
Installation of Microsoft patch (MS10-020 KB980232) to Windows clients
Applies to all 4.0.X and 4.1.X releases
1. Using the new Windows patch : If the customer has installed (or wishes to install) the Windows patch and wants to keep the patch in place, turn the WAAS CIFS optimizations off. Once the new WAAS software is available and deployed, CIFS optimizations can be turned on again.
2. Deploying the Windows patch MS10-020 after the relevant WAAS S/W update is available: After reviewing the patch notes from Microsoft, customers may choose to apply the Windows patch after the updated WAAS software is available.
email: david @ sharpesecurity.com