When I use the "PI System Management Tools", I get this error:
Neither I can't write new values. It is very strange because if I use the snapshot tool I could get the current value.
Does anyone know why this could happen?
Thanks in advance!
I would look into PI Server logs and/or PI SDK tracing information to see what's going on. You would like to make sure the trusts are in place and granted and also if the problem holds only for PI SMT or affects other PI SDK clients as well. The best and most efficient place to do this would be through regular Tech Support. They can have a remote session with you and look at your system as is.
Typically, this error is because your license has expired. I am guessing that you were using a temporary license from the download center? If so, you can generate a more permanent license for your vCampus server from My License Activation in Download Center:
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