Errror Uploading to Datastore

[Super6VCA]

Trying to upload files to datastore and getting this annoying message...

The operation failed

The operation failed for an undetermined reason. Typically this problem occurs due to certificates that the browser does not trust. If you are using self-signed or custom certificates, open the URL below in a new browser tab and accept the certificate, then retry the operation. If this does not resolve the problem, other possible solutions are shown in this KB article: http://kb.vmware.com/kb/2147256

.

All my certificates are fine...so they say.  File copy starts, then at some point fails with this error.  Any thoughts on getting by this??   Thanks

[scott28tt]

@Super6VCA 

Moderator: Moved to vSphere Discussions as a vSphere admin matter rather than specific to any vCenter-branded product or technology.

[bryanvaneeden]

Are you by any chance able to see at what percentage the file upload fails?

[Super6VCA]

Yes and it varies.  Gets as high as 42% sometimes

[bryanvaneeden]

Hmm oke, that's weird. It shouldn't start at all if there is any network connectivity issues.

Did you try to upload the file through the ESXi host itself? Does that work (all the time?)?

[Super6VCA]

Same exact issue.  gets so far then error

[bryanvaneeden]

Hmm oke weird. So that way we now know that the vCenter is not part of the problem, atleast so it seems.

Can you have a look at the following logs and look if there is anything in it while/during the error?

hostd.log
vmkernel.log
vmkwarning.log

 I'm curious if anything is in there.

Also, you might want to do a packet capture (https://kb.vmware.com/s/article/2051814) to see if you see anything out of the ordinary.