Source note · Web proxies and TLS inspection that break UC clients
Microsoft states that among proxy and perimeter functions, TLS Break and Inspect creates the largest latency, and that proxy authentication and reputation lookup can also degrade performance.
Checked 2026-10-14
While TLS Break and Inspect creates the largest latency, other services such as proxy authentication and reputation lookup can cause poor performance and a bad user experience.
- Vendor
- Microsoft
- Product
- Microsoft 365
- Subsystem
- proxy configuration
- Deployment
- multi-tenant
- Region
- not restricted
- Release range
- current as of 2026-10-14
- Checked
- 2026-10-14
Sources
- Managing Microsoft 365 endpoints — Microsoft · tier 2 current vendor documentation · Use a PAC file for direct routing of vital Microsoft 365 traffic, paragraph 1
Cite this note
APA
WarmTransfer. (2026, October 14). Web proxies and TLS inspection that break UC clients: source note tls-inspection-uc-clients-m365-break-inspect-latency. WarmTransfer. https://warmtransfer.net/knowledge/claims/tls-inspection-uc-clients-m365-break-inspect-latency
BibTeX
@misc{warmtransfer-claim-tls-inspection-uc-clients-m365-break-inspect-latency,
title = {Web proxies and TLS inspection that break UC clients: source note tls-inspection-uc-clients-m365-break-inspect-latency},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/tls-inspection-uc-clients-m365-break-inspect-latency},
note = {Source note tls-inspection-uc-clients-m365-break-inspect-latency, checked 2026-10-14}
}