Application Insights search and details loading very slowly

Question

Application Insights search and details loading very slowly

Everett Lucas 0

As of this morning our Production Application Insights resources are returning search data and transaction details at a rate that is unusable, and frequently was timing out. This issue has continued through the afternoon. The affected resources are located in South Central, Central, and East US 2. This is tagged as Azure Monitor as Azure Application Insights wasn't an option.

Siva shunmugam Nadessin 9,625 Reputation points Microsoft External Staff Moderator

2026-04-23T18:54:40.02+00:00

Hello Everett Lucas,

Kindly provide screenshot of the issue for our better understanding?
Naveena Patlolla 9,660 Reputation points Microsoft External Staff Moderator

2026-04-28T17:59:34.6566667+00:00

Hi Everett Lucas,

According to Microsoft documentation, Azure Application Insights (Azure Monitor) enforces query throttling, rate limits, and ingestion limits. Under heavy load or large/complex queries, requests can be throttled or timeout. Run Application Insights Analytics queries with reduced scope (shorter time ranges, fewer filters) to confirm whether the issue is query complexity vs. service degradation.

Reference:
https://learn.microsoft.com/en-us/azure/azure-monitor/metrics/azure-monitor-workspace-monitor-ingest-limits?tabs=portal

let us know if you have any further queries. I’m happy to assist you further.
If the solution was helpful, please click "Upvote"

2 answers

Your answer

Siva shunmugam Nadessin 9,625 Reputation points Microsoft External Staff Moderator

2026-04-23T18:54:40.02+00:00

Hello Everett Lucas,

Kindly provide screenshot of the issue for our better understanding?
Naveena Patlolla 9,660 Reputation points Microsoft External Staff Moderator

2026-04-28T17:59:34.6566667+00:00

Hi Everett Lucas,

According to Microsoft documentation, Azure Application Insights (Azure Monitor) enforces query throttling, rate limits, and ingestion limits. Under heavy load or large/complex queries, requests can be throttled or timeout. Run Application Insights Analytics queries with reduced scope (shorter time ranges, fewer filters) to confirm whether the issue is query complexity vs. service degradation.

Reference:
https://learn.microsoft.com/en-us/azure/azure-monitor/metrics/azure-monitor-workspace-monitor-ingest-limits?tabs=portal

let us know if you have any further queries. I’m happy to assist you further.
If the solution was helpful, please click "Upvote"

Answer 1

Lucas hi & thx for join me here at Q&A portal,

if multiple App Insights resources across South Central, Central, and East US 2 got slow the same morning, this does not smell like app telemetry issue. this is probably Azure Monitor / App Insights backend query latency or portal issue. See if Azure Service Health for Azure Monitor / Application Insights in those regions, test with Log Analytics query directly instead of portal Search, for example a small time range like last 15 min coz portal transaction search can be slower than raw KQL. reduce time window and filters to confirm if its backend latency vs huge query volume.

if KQL is also timing out across regions, open an ticket with resource ids, timestamps, failed query examples, and correlation/request IDs from portal.

Seems like its not ur app, likely Azure Monitor backend latency, verify with KQL and Service Health

rgds, Alex

&

 if my answer helps pls accept it.

Answer 2

Deleted

This answer has been deleted due to a violation of our Code of Conduct. The answer was manually reported or identified through automated detection before action was taken. Please refer to our Code of Conduct for more information.

Comments have been turned off. Learn more

Share via

Application Insights search and details loading very slowly

2 answers

Your answer