Himmat Singh Dulawat (3x Sitecore MVP)

We had encounter the following error frequently in our application. Problem Id: System.NullReferenceException at Sitecore.SessionProvider.Redis.StackExchangeClientConnectionAsync+<EvalAsync>d__22.MoveNext Message: Object reference not set to an instance of an object. Exception type: System.NullReferenceException Failed method: Sitecore.SessionProvider.Redis.StackExchangeClientConnectionAsync+<EvalAsync>d__22.MoveNext Call Stack: StackExchange.Redis DLL version: 2.1.58 The application is deployed on Sitecore Managed Cloud Service Azure PaaS and uses Redis app service . I have applied the below fixes as well as the following articles but the issue is not resolved: Increased the min worker thread pool to 100 Increased polling Interval to 60 Tuned Redis Configuration as described here: Tuning Redis Configuration Settings Added sslprotocols=tls12 to Redis connection string Sitecore PAAS Redis Exce