Today I cannot access my SSAS Denali Server, SSMS returns this error which, unexpectedly, does not return any result on google, and seems to be related to SSMS asking SSAS which serverMode is using.
The scenario is that I have a big IMBI database which fails to load due to an out of memory error during startup of the server (I have checked it with the flight recorder). I tried to rename the folder of the database but… no luck, the error was still there and the log was showing (of course) an error loading the database.
To make the server work again, I had to delete the db file of the offending database, manually delete the folder and now everything seems to work.
Thus, it seems that if SSAS has some error during startup, it will not answer to his server mode value and SSMS refuses to connect to it.