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Dean, Thank you for this information. So the ADDE plugin may be problematic. It looks like you found a workaround by either removing the ADDE plugin or starting with a fresh .unidata directory. This information will be helpful for us in the future. Thanks again for the update. Best, Unidata IDV Support > Dear Unidata IDV Support, > I successfully accessed the ADDE server at adde.ucar.edu ! The solution was > removing the installed plugin "ADDE via port 80" . > > Previously to the above solution: > I added port 8080 to the services file, while ports 80 and 112 were open. > However, I still received "connection refused" from the server adde.ucar.edu > . > > > > I always ran IDV on Linux with a user account, however I decided to run IDV > asroot, and accessing adde.ucar.edu worked! I then had search through my > Linux > system to find an answer to root's success. A few days elapsed while solving > this mystery, with no success. > > Finally the solution converged to differences between root's and user's > .unidata directory. > I realized that root's home directory had no IDV related files, that is no > .undata directory > prior to running IDV. So IDV was run for the first time in this instance with > all defaults > set and no plugins installed. > > Inspection of the regular user's list of installed IDV plugins showed "ADDE > via port 80". > I decided that this plugin could be the problem, because this plugin was not > installed on > root's IDV, and another point, although obvious, was the name of the ADDE > plugin itself. > > Sorry about the delay in replying. This was the first chance in days I could > write this. > Sincerely, > Dean Steinmetz > > Ticket Details =================== Ticket ID: EKW-753985 Department: Support IDV Priority: Normal Status: Closed