@gis, see if this helps.
Resolution for '1198845error issue: 'Cant access company files in Pro 2016' available: Yes.
The 1198845error issue or error code is a known issue in Quickbooks Online (QBO) and/or Quickbooks. Support for this issue is available either by self-service or paid support options. Experts are available to resolve your Quickbooks issue to ensure minimal downtime and continue running your business. First try to resolve the 1198845error issue yourself by looking for a resolution described in the article. If it is a complex 1198845error issue or you are unable to solve the issue, you may contact us by clicking here or by using other 1198845error support options.
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