KB938828 updates has caused the Serial Port not to function

[Guest]

KB938828 updates has caused the Serial Port not to function, after pushing
several updates to our D-series Dell Laptops, the Serial port no longer
functions. I rolled back the updates and the Serial Port is now working.
Since; this update is a package of updates, I cannot determine which one is
the culprit.

 

[Detlev Dreyer]

KB938828 updates has caused the Serial Port not to function, after pushing
several updates to our D-series Dell Laptops, the Serial port no longer
functions. I rolled back the updates and the Serial Port is now working.
Since; this update is a package of updates, I cannot determine which one is
the culprit.

That update replaces Explorer.exe only, see also
http://support.microsoft.com/kb/938828/en-us