Azure VNet Peering Not Connecting
Azure VNet peering stays disconnected when address spaces overlap.
Category archive
Azure fixes
Published troubleshooting guides for azure issues.
Azure Service Bus Session State Lost
Service Bus session state is lost when session is abandoned.
Azure Service Bus Dead Letter Queue Full
Service Bus DLQ fills up when messages are not being processed.
Azure Service Bus Message Deferral
Service Bus deferred messages cannot be received when sequence ID is wrong.
Azure Logic App Workflow Definition Invalid
Logic Apps workflow fails when JSON definition has schema violations.
Azure Logic App Run History Missing
Logic Apps run history is missing when retention policy has expired.
Azure Logic App Connector Auth Failed
Logic App connectors fail when OAuth connection is expired.
Azure Functions Premium Instance Warmup
Azure Functions premium instances are not warm when prewarmed count is zero.
Azure Functions Durable Orchestration Timeout
Durable Functions orchestration times out when activity takes too long.
Azure Functions Consumption Cold Start
Azure Functions cold starts cause latency when premium plan is not used.
Azure SQL Transaction Log Full
Azure SQL transaction log fills when backup or replication is broken.
Azure SQL DACPAC Deployment Failed
Azure SQL DACPAC deployment fails when blocking schema changes are detected.
Azure SQL Auditing Not Writing
Azure SQL audit logs are not written when storage destination is full.
Azure SQL Vulnerability Assessment
Azure SQL vulnerability assessment fails when scan permissions are insufficient.
Azure SQL Elastic Pool Imbalanced
Azure SQL elastic pool resources are imbalanced when databases have uneven usage.
Azure SQL Failover Group Not Syncing
Azure SQL failover group synchronization fails when secondary is unavailable.
Azure SQL Managed Instance Link Broken
Azure SQL MI link fails when replication certificate is expired.
Azure SQL Database Geo Replica Lag
Azure SQL geo-replica falls behind when transaction log generation is high.
Azure SQL Database DTU Limit
Azure SQL hits DTU limit causing query timeouts and throttling.
Azure SQL Database Deadlock
Azure SQL deadlocks occur when transactions have circular lock dependencies.
Azure Cosmos DB TTL Not Expiring
Cosmos DB TTL does not expire items when timestamp property is missing.
Azure Cosmos DB Change Feed Lag
Cosmos DB change feed falls behind when consumer throughput is insufficient.
Azure Cosmos DB SQL Query Slow
Cosmos DB queries are slow when query does not use optimal index.
Azure Cosmos DB Partition Hotspot
Cosmos DB partition hotspots occur when partition key has low cardinality.
Azure Cosmos DB Throttling
Cosmos DB returns 429 when provisioned RU/s is insufficient for the workload.
Azure CORS Policy Blocking Calls
Azure Storage CORS blocks browser calls when allowed origins is empty.
Azure Storage Explorer Auth Error
Storage Explorer authentication fails when Azure AD token is expired.
Azure File Share Mount Failed
Azure Files mount fails when SMB protocol version is blocked by firewall.
Azure Blob Upload 403 Forbidden
Azure blob uploads fail when shared access signature is expired.
Azure Storage Account Inaccessible
Azure storage account is inaccessible when firewall rules deny the client IP.
Azure Sentinel Connector Broken
Azure Sentinel data connectors stop ingesting when API authentication fails.
Azure Security Center Alert False
Azure Defender generates false alerts when baseline is misconfigured.
Azure Just In Time Access Not Working
Azure JIT does not open ports when Defender for Cloud is not enabled.
Azure Bastion Connection Timeout
Azure Bastion sessions timeout when NSG rules block management ports.
Azure Redirection Rule Loop
Azure App Gateway causes redirect loop when HTTP to HTTPS rule is misconfigured.
Azure URL Path Rewrite Not Working
Azure App Gateway rewrite rules do not apply when conditions are wrong.
Azure Backend Pool Not Resolving
Azure App Gateway backend pool fails when custom probe host is misconfigured.
Azure SSL Policy Too Strict
Azure App Gateway SSL policy rejects clients when minimum TLS version is too high.
Azure Application Gateway WAF Blocking
Azure AG WAF blocks legitimate traffic when rule exclusion is not configured.
Azure Load Balancer Probe Failing
Azure LB marks backends unhealthy when health probe endpoint is not responding.
Azure Shared Image Gallery Replication Slow
Azure SIG replication is slow when target regions have network constraints.
Azure Image Builder Pipeline Failed
Azure image builder customization fails when VM profile is invalid.
Azure Snapshot Restore Failed
Azure snapshot restore fails when target disk type is incompatible.
Azure Zone Redundancy Lost
Azure zone-redundant resources lose protection when deployed to single zone.
Azure Availability Set Misconfigured
Azure availability set does not provide redundancy when fault domains are wrong.
Azure Resize Operation Failed
Azure VM resize fails when target SKU is not available in the region.
Azure Disk Encryption Failed
Azure disk encryption fails when Key Vault access policy is misconfigured.
Azure VM Deallocation Issues
Azure VM cannot be deallocated when guest agent is not responding.
How to Fix Azure Front Door Origin Host Header Mismatch
Restore Azure Front Door routing when the origin rejects requests because the forwarded host header does not match the backend application's expected hostname.
How to Fix Azure Front Door Health Probe Failing
Restore Azure Front Door routing when backend health probes fail because the probe path, host header, TLS setup, or origin access rules are incorrect.
Azure VM Extension Failed
Azure VM extensions fail when dependencies are not installed or handler is outdated.
Azure VM Not Starting
Azure virtual machine fails to start when allocation quota is exceeded or image is corrupted.