Hi There,
Hope you're doing well !
I've gone thru your problem case as above, What I can conclude from my end is, Memory issue in the server where the SSRS is installed.
Firstly I want to check,
Whereis the SSRS installed ? Is it installed in DB server / Application server ?
Howmuch the main memory is allocated In the server where the SSRS isinstalled ? ( RAM size )
What isthe OS version, If it is windows, what is the windows server and clientversions ? ( 32 bit / 64 bit ) ( this info will help to trouble shootcompatibility issue )
If RAMsize is 10gb, say for example, how much memory was given to SSRS ? (Please check report server config file )
IIS isinstalled in the server where SSRS is configured ? If it is there, check foractive internet connections
Please reply to these, Once you've replied we can further investigate into SSRS config file and settings.
Thanks
Subbu