How do I downgrade Power Bi Report Server Version?

[Anonymous]

I think the Jan 2020 Versions appears incompatible for some of my reports, is there any way to install earlier report versions? Maybe even earlier than September 2019?

Thanks in advance.

[Jon-Heide]

Newer versions of the report server are always backward compatible with older reports. So there should not be cases where a report no longer works. Suggest looking into why the report has a problem. Otherwise, there is no server downgrade. Rather you would need to backup the Sep-2019 version of the catalog database, and attach that to an install of that server version. 

[d_gosbell · Accepted solution]

Based on your other thread where your custom visuals are throwing javascript errors I think this is an issue or corruption of some sort on your specific server rather than a general compatibility issue.

I have a report on my dev server that uses all the different custom visuals we use in our organization (including some internal, custom written ones) that I use for testing when a new version of PBIRS is released and that report is working fine for me.

If you have not tried already I would suggest re-running the Jan 2020 installer and choosing the repair option to see if that can fix the issue. If that does not work the next step would be to take a back up of the encryption key then uninstall PBIRS, make sure there are no files left in the install location (ususally C:\Program Files\Microsoft Power BI Report Server) then try re-installing. You should be able to reconnect to your current database and import your encryption key so that you don't loose any content.