Last Monday, October 18, Google Analytics suffered a bug that caused approximately one hour of data loss. Google has confirmed that this data is unrecoverable and it would be important to mark it with an annotation.
Analytics experts discovered that the data was not being completed and followed up with Google. The company explained that the loss occurred between 7:27 a.m. and 8:30 a.m. PDT (between 4:27 p.m. and 5:00 p.m. Spanish time). This was Google’s response:
To help you further, I’ve immediately checked with our team and confirmed that there was an account outage issue from 7:27am and 8:30am PDT on October 18, 2021. Any data sent to Google Analytics from 7:27am and 8:30am PDT on October 18, 2021 was not collected and is therefore not present in Analytics reporting. Because this happened at the collection level, data cannot be restored via reprocessing or any other method.
In addition to the impact this has on customers’ Analytics reporting it affects downstream integrations (e.g. Google Optimize), notably affecting advertiser-oriented features such as conversion-export and audience evaluation.. Multiple Google Ads accounts with Automatic payment methods have been impacted due to this intermittent technical issue. Multiple Google Analytics accounts have been impacted due to this intermittent technical issue.
However, I’m delighted to inform you that the issue has been resolved and your reporting is now up and running. There is no further action required from you.
Our team would like to sincerely apologize for the inconvenience caused by the temporary outage. Also, I highly appreciate your time and patience while our team worked on this issue.
Additional Information:
Any data uploaded during that period is lost forever and cannot be recovered with reprocessing since it was dropped by Collection.
The problem with Google Analytics has been resolved. We apologize for the inconvenience and thank you for your patience and continued support.
Collection of all Google Analytics data was interrupted during this incident and is unavailable. Affects on reporting and linked products are under assessment.
I hope this email helps you in resolving the query. In the meantime, if you have further questions feel free to contact us or reply to this email thread and we will be happy to assist you.
So if you see a strange gap in your Google Analytics data on October 18, this is why.