DeepSeek PC clipboard paste fails (2026)
Click into the input box before pasting.
Try Ctrl+Shift+V for plain text if rich paste fails.
Restart the desktop app after an OS clipboard update.
Disable overlay clipboard managers briefly to test.
Smoke-test with a short string after each change.
Change one variable at a time and confirm what actually helped.
If a company policy is involved, rule that out before chasing client settings.
Write the working steps into a short checklist for next time.
Export or screenshot a good setup so reinstalls are faster.
If it still flakes, retest on a clean network such as phone hotspot.