A month ago, Google posted that between the dates of May 13, 2025 through April 27, 2026, just about 50 weeks, there was a "logging error prevented Search Console from accurately reporting impressions." Google updated the post to now say "This issue has been resolved."
Here is the full post:
A logging error prevented Search Console from accurately reporting impressions from May 13, 2025 until April 27, 2026. This issue has been resolved. As a result, you may notice a decrease in impressions in the Search Console Performance report. Only impressions and related metrics - CTR and average position - were affected; clicks were not affected by the error, and this issue affected data logging only.
This change was spotted by Kenichi Suzuki on LinkedIn Then Glenn Gabe reshared it on X and added, "But, when I'm checking impressions across accounts, I'm not seeing any changes."
John Mueller from Google confirmed on Bluesky that this is only fixed going forward and the old data will not be fixed:
