ssl - server giving msxml3.dll error '80072f7d' when trying to access secure url -

for years have used classic asp connect secure site of supplier using msxml3.dll - since morning, getting;

msxml3.dll error '80072f7d'   error occurred in secure channel support 

i have had around , can see not 1 have seen - cannot find solution.

the partner site has updated ssl certificate. if try connect remote url server using ie or chrome, fails connect reporting nonvalid digital signature on site's certificate. however, if try connect local computer, works without problem , can see server identity has been correctly established.

any appreciated.

in microsoft windows server 2003, applications use cryptography api (capi) cannot validate x.509 certificate. problem occurs if certificate secured secure hash algorithm 2 (sha2) family of hashing algorithms. applications may not work expected if require sha2 family of hashing algorithms.

http://support.microsoft.com/kb/938397 fixed problem me.