I am using Lightroom, once I imported photos into Lightroom. Problems happened as below.
1. At first, a few photos could be uploaded. After a few minutes, I found that I couldn't open websites using Chrome.
2. Chrome told me it cannot find the server IP address of the sites. And the error code is "DNS_PROBE_FINISHED_NXDOMAIN".
3. And I found that Lightroom also could not sync photos. But I checked the details of Router, the real-time upload rate was being fully used by Lightroom.
4. I tried other devices which were also accessed the same router, they could access the internet well.
5. I paused the Lightroom sync. Then my PC could access the internet immediately.
Here is my system info.
Lightroom version: 3.2 [ 20200204-0604-bc5e360 ] (Feb 4 2020) NGL Version: 22.214.171.124 Operating system: Windows 10 OS Version: 10.0  Application architecture: x64 System architecture: x64 Computer model: System manufacturer System Product Name / AMD Ryzen 9 3950X 16-Core Processor Logical processor count: 32 Processor speed: 4.3 GHz Built-in memory: 32681.3 MB Real memory available to Lightroom: 32681.3 MB Real memory used by Lightroom: 2094.8 MB (6.4%) Virtual memory used by Lightroom: 5823.0 MB Memory cache size: 2985.0 MB Internal Camera Raw version: 12.2 [ 385 ] Maximum thread count used by Camera Raw: 17 Camera Raw SIMD optimization: SSE2,AVX,AVX2 Camera Raw virtual memory: 855MB / 16340MB (5%) Camera Raw real memory: 856MB / 32681MB (2%) System DPI setting: 96 DPI Desktop composition enabled: Yes Displays: 1) 5120x1440 Input types: Multitouch: No, Integrated touch: No, Integrated pen: No, External touch: No, External pen: No, Keyboard: No
Graphics Processor Info: DirectX: NVIDIA GeForce RTX 2080 Ti (126.96.36.19974) - 11 GB Graphics Processor Detail: loaded: Yes, supported: Yes, compute: Yes, init: I4_GPU3, hard: success, soft: success, wl: Yes, bl: No OS Media Capability: true
Application Folder: C:\Program Files\Adobe\Adobe Lightroom CC Settings Folder: C:\Users\xx\AppData\Roaming\Adobe\Lightroom CC Library Folder: C:\Users\xx\AppData\Local\Adobe\Lightroom CC\Data